Environmental pressures at archaeological heritage sites are increasingly shaped by the interaction of physical degradation, human behavior, and institutional capacity. Somapura Mahavihara, inscribed on the UNESCO World Heritage List as the Ruins of the Buddhist Vihara at Paharpur, represents a particularly important case because its exposed brick architecture, open archaeological landscape, and visitor accessibility make it vulnerable to multiple forms of environmental stress while also requiring sustained governance and community stewardship (UNESCO World Heritage Centre, n.d.). This study develops a mixed-method framework to map environmental pollution, assess stakeholder awareness, and evaluate the implementation of conservation and environmental management policies at the site. The paper proceeds from the argument that heritage deterioration cannot be understood solely as a material problem; rather, it must be examined through the interconnected dimensions of environmental condition, stakeholder practice, and policy execution.
The research adopts a convergent mixed-method case study design. Spatial field observation is used to identify and map visible indicators of environmental stress, including solid waste, plastic litter, stagnant water, drainage-related vulnerability, vegetation intrusion, soil erosion, and visitor-pressure zones. These observations are integrated with questionnaire-based assessment of awareness, attitudes, and practices among visitors, local residents, vendors, site personnel, and relevant officials. Semi-structured interviews and document review are further employed to evaluate how heritage protection and environmental management policies are interpreted and implemented in everyday practice. Quantitative data are analyzed through descriptive and inferential statistics, while qualitative findings are examined through thematic analysis and then triangulated with spatial evidence.
The study is expected to contribute to three areas of scholarship and practice. First, it advances heritage research by linking archaeological conservation with environmental governance and policy implementation. Second, it offers a methodological model for combining pollution mapping with stakeholder analysis in an open heritage landscape. Third, it provides a practical basis for strengthening conservation planning, public awareness, and site-level environmental management at Somapura Mahavihara and other archaeological World Heritage properties facing comparable pressures. By foregrounding the relationship between environmental risk and institutional response, the paper argues for a more integrated and participatory approach to heritage protection.
Keywords: Somapura Mahavihara; Paharpur; environmental pollution; stakeholder awareness; UNESCO World Heritage; heritage management; policy implementation; archaeological landscape
1. Introduction
1.1 Background
Cultural heritage sites are increasingly exposed to environmental pressures that extend beyond conventional questions of monument preservation. In archaeological landscapes, deterioration often occurs through cumulative processes such as unmanaged waste, water stagnation, erosion, vegetation growth, visitor pressure, and weak environmental monitoring. These processes are especially consequential where heritage remains are materially fragile, spatially dispersed, and closely tied to landscape setting. As conservation scholarship has long emphasized, the protection of world heritage requires not only technical treatment of structures but also comprehensive management of environmental conditions, human use, and institutional responsibility (Feilden & Jokilehto, 1998; UNESCO, ICCROM, ICOMOS, & IUCN, 2013).
Somapura Mahavihara, known internationally through the UNESCO property “Ruins of the Buddhist Vihara at Paharpur,” is one of South Asia’s most significant Buddhist archaeological sites and is widely recognized as a major monastic complex of the early medieval period (UNESCO World Heritage Centre, n.d.). Its monumental central shrine, monastic enclosure, exposed brick remains, surrounding open grounds, and archaeological features collectively form a heritage landscape rather than an isolated monument. This landscape condition is central to the site’s value, but it also increases vulnerability. Environmental degradation at such a site may affect not only structural fabric but also authenticity, integrity, visitor experience, and long-term conservation capacity.
The significance of environmental management at heritage sites has grown alongside broader shifts in heritage theory and practice. Scholarship has increasingly shown that heritage is not merely a material inheritance but also a socially managed and politically mediated field shaped by values, actors, and institutions (Smith, 2006; Labadi, 2013). In this regard, environmental pollution at a world heritage site should not be understood only as a matter of physical contamination or visual disorder. It is also a governance issue connected to awareness, compliance, monitoring, inter-agency coordination, and the everyday conduct of site users. Such an approach is particularly relevant for sites in which conservation authorities, visitors, local residents, tourism actors, and public agencies all have roles in shaping site conditions.
1.2 Problem Statement
Although heritage conservation policies often articulate strong commitments to site protection, the translation of policy into day-to-day management remains uneven. Implementation studies have repeatedly shown that policy success depends not only on formal rules but also on administrative coordination, institutional capacity, local compliance, and the behavior of multiple actors operating in real-world settings (Pressman & Wildavsky, 1973; Sabatier & Mazmanian, 1980; Hill & Hupe, 2002). This insight is particularly relevant to heritage sites, where environmental degradation may persist even when conservation principles are formally acknowledged.
At Somapura Mahavihara, the coexistence of exposed archaeological remains, open circulation, seasonal environmental variability, tourism-related use, and broader local activity creates conditions in which environmental stress can accumulate gradually and unevenly across the site. Yet research and management discussions often privilege monument-centered conservation over integrated environmental assessment. Where pollution or ecological stress is observed, it is frequently treated as a maintenance issue rather than as part of a wider governance and awareness problem. This leaves a significant analytical gap. Without mapping the spatial distribution of environmental pressures, understanding how stakeholders perceive and respond to those pressures, and evaluating whether policy is effectively implemented, heritage management risks becoming reactive rather than preventive.
1.3 Aim and Objectives
The aim of this study is to map environmental pollution, assess stakeholder awareness, and evaluate policy implementation gaps at Somapura Mahavihara in order to develop an integrated framework for sustainable heritage management.
To achieve this aim, the study pursues five objectives. First, it identifies the principal forms of environmental pollution and environmental stress affecting the site and its surrounding landscape. Second, it maps the spatial distribution of these pressures in order to identify vulnerable and high-risk zones. Third, it examines levels of awareness, attitudes, and self-reported practices among key stakeholder groups, including visitors, local residents, vendors, site personnel, and public officials. Fourth, it analyzes the extent to which conservation and environmental management policies are implemented in everyday site governance. Fifth, it proposes practical recommendations for improving environmental protection, stakeholder participation, and policy enforcement.
1.4 Research Questions
The study is guided by the following research questions:
- What forms of environmental pollution and environmental stress are present within and around Somapura Mahavihara?
- Which areas of the site are most vulnerable to pollution-related deterioration?
- What is the level of awareness among key stakeholders regarding environmental threats to the heritage site?
- How do stakeholder attitudes and practices influence environmental conditions at the site?
- What gaps exist between conservation policy provisions and actual implementation?
- What policy and management strategies can improve environmental stewardship at Somapura Mahavihara?
1.5 Hypotheses
The study tests four interrelated hypotheses.
H1: Lower stakeholder awareness is significantly associated with weaker
environmentally responsible behavior at the heritage site.
H2: Areas experiencing higher visitor pressure and lower levels of
monitoring exhibit higher levels of visible environmental pollution.
H3: Gaps in policy implementation significantly contribute to unmanaged
environmental stress at Somapura Mahavihara.
H4: Stakeholders with greater awareness of the site’s heritage value are
more likely to support conservation-oriented environmental regulations.
1.6 Significance of the Study
This study is significant for both scholarship and practice. From an academic standpoint, it contributes to the growing literature that connects heritage conservation to environmental governance, stakeholder participation, and implementation analysis. While previous work has emphasized the importance of management planning and public involvement in heritage contexts (Aas, Ladkin, & Fletcher, 2005; UNESCO et al., 2013), fewer studies integrate these concerns with spatial mapping of pollution in an archaeological landscape. From a methodological standpoint, the paper develops a mixed-method design that combines field-based environmental assessment with social and institutional analysis. From a practical standpoint, the findings are expected to support site managers and policymakers by identifying pollution hotspots, awareness gaps, and policy bottlenecks that can be addressed through targeted intervention.
2. Literature Review
2.1 Heritage Sites as Environmental Landscapes
Heritage conservation has progressively moved away from a narrow focus on individual monuments toward a broader understanding of landscape, setting, and context. This shift reflects the recognition that cultural significance is shaped not only by built fabric but also by spatial relationships, environmental conditions, and patterns of use (Feilden & Jokilehto, 1998; UNESCO et al., 2013). In archaeological sites, this broader perspective is especially necessary because remains are often dispersed, excavated, weather-exposed, and dependent on the surrounding ground surface for interpretation and protection. Consequently, environmental degradation at such sites may manifest through a wide range of processes, from waterlogging and vegetation growth to litter accumulation and trampling.
Within UNESCO heritage discourse, authenticity and integrity are not preserved solely through material repair; they also depend on the maintenance of conditions that allow a site’s values to be sustained over time (Labadi, 2013; UNESCO World Heritage Centre, n.d.). At open archaeological sites, environmental stress can degrade the physical fabric, obscure archaeological legibility, alter visual setting, and diminish the quality of visitor engagement. These pressures are often cumulative rather than catastrophic. Their significance lies precisely in their gradual and often normalized impact, which can be overlooked in management systems focused on major threats alone.
Somapura Mahavihara illustrates these concerns in a particularly clear way. As a large monastic complex with extensive brick remains and open grounds, the site must be understood as a heritage landscape whose conservation requires ongoing environmental management. Pollution in this context is not limited to visible solid waste. It includes conditions such as stagnant water, inadequate drainage, erosion, vegetation intrusion, and unmanaged movement patterns that may affect both structure and setting. A landscape-based analytical framework is therefore more appropriate than a narrow monument-based approach.
2.2 Environmental Pollution and Heritage Conservation
The literature on conservation management consistently demonstrates that environmental factors are among the most persistent threats to heritage sites. Although public discussion often reduces pollution to littering, the conservation field treats environmental risk more broadly, encompassing moisture, runoff, biological growth, soil instability, visual contamination, and incompatible uses that erode the integrity of the heritage environment (Feilden & Jokilehto, 1998; UNESCO et al., 2013). For archaeological sites composed of exposed brick and earthen substrates, the interaction between climate, water movement, vegetation, and human activity can significantly accelerate deterioration.
Such threats become particularly challenging where monitoring is weak or inconsistent. Because many environmental impacts are dispersed and seasonal, they require routine observation, mapping, and maintenance rather than episodic intervention. Yet heritage management systems do not always integrate environmental audit procedures into standard conservation practice. This creates a gap between preservation principles and operational reality. In effect, physical degradation is often addressed only after visible damage becomes pronounced.
A key implication of the literature is that environmental protection at heritage sites must be preventive, spatially informed, and management-oriented. Pollution mapping is therefore not merely a descriptive exercise. It is a tool for identifying where risks are concentrated, how they relate to circulation or land use, and which zones require priority intervention. In the context of Somapura Mahavihara, such mapping can reveal the relationship between open access areas, water-prone zones, peripheral archaeological remains, and site maintenance practices.
2.3 Stakeholder Awareness and Participatory Heritage Management
A second major theme in the literature concerns the role of stakeholders in heritage conservation. Heritage is not protected by institutions alone; it is shaped by the conduct, perceptions, and cooperation of multiple actors. Smith (2006) argues that heritage is socially produced through practices of meaning, authority, and public engagement rather than simply inherited as a fixed object. This insight is important for understanding why stakeholder awareness matters. Where users do not understand the significance or fragility of a site, environmentally harmful behaviors may become normalized even in formally protected settings.
Stakeholder collaboration has been identified as a core requirement of effective heritage management, particularly in tourism-oriented or publicly accessible sites (Aas et al., 2005). Visitors, residents, vendors, guides, site staff, and public officials all influence the conditions under which conservation occurs. Their awareness affects how they dispose of waste, respect movement restrictions, respond to site rules, and support or resist regulatory measures. In addition, awareness is not identical across groups. Officials may possess procedural knowledge but face implementation constraints, while visitors may value the site symbolically yet remain uninformed about practical conservation rules.
The literature thus suggests that stakeholder awareness must be treated as both a social variable and a policy variable. It is social because it shapes behavior and public responsibility. It is policy-related because awareness is affected by interpretation systems, signage, education campaigns, communication strategies, and participatory planning. At a site such as Somapura Mahavihara, assessing awareness is essential for understanding whether existing management tools are generating informed stewardship or merely passive visitation.
2.4 Policy Implementation in Heritage Management
Policy implementation research provides a useful framework for examining why heritage protection often falls short in practice. Classic implementation studies emphasize that policy outcomes are rarely determined by legislation alone. They are mediated by organizational structures, resource availability, inter-agency coordination, administrative discretion, and local compliance (Pressman & Wildavsky, 1973; Sabatier & Mazmanian, 1980; Hill & Hupe, 2002). This is highly relevant to heritage management, where responsibilities may be distributed across conservation authorities, tourism bodies, local government, environmental agencies, and site-level staff.
In the heritage field, UNESCO and related international guidance repeatedly stress the need for integrated management systems, monitoring, participation, and long-term planning (UNESCO et al., 2013). However, translating these principles into everyday site practice is complex. Gaps may arise when management plans are insufficiently operationalized, when site staffing is limited, when enforcement is inconsistent, or when environmental responsibilities are not clearly institutionalized. Policy may therefore exist at the level of intention while remaining weak at the level of implementation.
This study adopts policy implementation not as an abstract administrative category but as an empirical lens for examining site governance. It asks whether environmental rules and conservation commitments are visible in the practical management of Somapura Mahavihara. Are monitoring and maintenance routines adequate? Are stakeholder responsibilities communicated effectively? Are institutional mandates coordinated? Are pollution-related threats addressed systematically or incidentally? These questions move beyond formal policy presence to evaluate actual policy performance.
2.5 Research Gap
Existing scholarship provides strong foundations for understanding heritage value, environmental risk, stakeholder participation, and policy implementation. However, three gaps remain. First, relatively few studies integrate these strands in a single analytical framework for an open archaeological landscape. Second, within heritage settings, environmental pollution is often discussed in general terms without being spatially mapped in relation to user behavior and governance conditions. Third, South Asian archaeological world heritage sites remain underrepresented in empirical studies that connect environmental management to stakeholder awareness and implementation analysis.
This study addresses these gaps by combining pollution mapping, awareness assessment, and policy implementation review within one case study. Rather than treating environmental degradation as a purely material issue, it conceptualizes site condition as the outcome of interaction among environmental pressures, stakeholder practices, and institutional response. In doing so, the paper contributes a more integrated model for understanding and managing heritage vulnerability.
3. Methodology
3.1 Research Design
This study employs a convergent mixed-method case study design. Mixed methods are appropriate because the research problem spans physical, social, and institutional dimensions that cannot be adequately captured through a single approach (Creswell & Plano Clark, 2018). The case study strategy is also suitable because the paper investigates a bounded heritage setting characterized by complex interactions among environment, users, and governance structures (Yin, 2018). Quantitative and qualitative data are collected in parallel, analyzed separately, and then integrated during interpretation.
The design has three interrelated components. The first is a spatial-environmental component that maps visible forms of pollution and environmental stress across the site. The second is a social component that measures stakeholder awareness, attitudes, and reported practices through structured questionnaires. The third is an institutional component that evaluates policy implementation through semi-structured interviews and document review. The logic of integration is straightforward: environmental mapping identifies where problems are concentrated, survey data help explain behavioral and perceptual patterns associated with those problems, and qualitative evidence clarifies the governance conditions under which they persist.
3.2 Study Area
The study area is Somapura Mahavihara, the UNESCO World Heritage property officially listed as the Ruins of the Buddhist Vihara at Paharpur in Bangladesh (UNESCO World Heritage Centre, n.d.). The property is significant for its monumental central shrine, monastic cells, associated archaeological remains, and enclosed site layout, all of which form an extensive archaeological landscape. Because the site’s heritage value is inseparable from its broader spatial setting, the study area includes not only the central monument but also surrounding ruins, circulation routes, open grounds, drainage-prone areas, peripheral archaeological features, and adjacent activity interfaces that may influence environmental condition.
For the purposes of field analysis, the site is divided into operational survey zones. These zones may include the central shrine precinct, the enclosed monastic perimeter, peripheral archaeological clusters, visitor access corridors, drainage and water-prone edges, and transitional boundary areas. Zoning allows environmental observations to be recorded systematically and compared across the site.
3.3 Conceptual and Analytical Framework
The study is guided by a three-dimensional framework linking environmental condition, stakeholder behavior, and policy implementation. The dependent outcome is the level and spatial distribution of environmental stress at the site. Independent and explanatory variables include stakeholder awareness, stakeholder practices, visitor pressure, monitoring intensity, institutional coordination, and enforcement capacity. Intervening variables may include signage quality, maintenance routines, staff availability, seasonality, and local participation.
In operational terms, the study assumes that environmental pollution at the site is influenced by both immediate and systemic factors. Immediate factors include littering, informal movement, poor waste behavior, and localized drainage problems. Systemic factors include limited monitoring, weak coordination, inadequate communication of site rules, and uneven implementation of conservation and environmental policy. This framework enables the study to test the hypotheses stated earlier and to interpret site condition as a governance outcome rather than as an isolated material phenomenon.
3.4 Data Sources
The study uses both primary and secondary data. Primary data consist of field observation, site mapping, structured questionnaires, semi-structured interviews, and photographic documentation. Secondary data include UNESCO site descriptions, conservation and management guidance, relevant national and local policy documents, institutional reports, planning materials, and prior academic research on heritage management, stakeholder participation, and policy implementation.
The use of multiple data sources supports triangulation. Environmental observations provide direct evidence of site condition; surveys capture perceptions and behaviors; interviews reveal implementation realities; and policy documents establish the normative framework against which practice can be assessed.
3.5 Sampling Strategy
The quantitative component uses a stratified purposive sampling strategy to ensure representation of the major stakeholder categories associated with the site. These categories include visitors, local residents, vendors or service providers, site staff, local administrators, and heritage-related officials. A target sample of approximately 200 to 300 questionnaire respondents is appropriate for generating meaningful descriptive and inferential analysis, though the final sample size may be adjusted according to field access and respondent availability.
The qualitative component uses purposive sampling for key informant interviews. Interviewees are selected on the basis of their institutional role, management experience, or direct engagement with the site. This group may include archaeology officials, conservation personnel, local government representatives, environmental officers, tourism actors, guides, and academic experts. Approximately 12 to 20 interviews are anticipated, or until thematic saturation is reached.
3.6 Data Collection Procedures
3.6.1 Environmental Observation and Pollution Mapping
A structured field observation protocol is used to document visible environmental conditions across all survey zones. Observation categories include solid waste accumulation, plastic litter, stagnant water, drainage obstruction, vegetation intrusion, soil erosion, surface degradation, informal pathways, crowding pressure, and other visible disturbances to archaeological setting. Each observation point is georeferenced where possible and recorded using a standard severity scale ranging from absence to high intensity. Photographs and field notes supplement the coded observations.
The purpose of this stage is not merely to describe site condition but to create a spatial distribution map of environmental stress. If GIS facilities are available, observation points are entered into a geospatial database and visualized through hotspot or zone-based maps. If GIS resources are limited, a manually coded site plan is used to produce analytical overlays. In either case, the resulting map identifies areas of higher vulnerability and links them to circulation, drainage, and management patterns.
3.6.2 Questionnaire Survey
The questionnaire instrument is designed to measure awareness, attitudes, and self-reported practices related to environmental protection and heritage conservation. The survey includes five sections: respondent profile; awareness of the site’s significance; awareness of environmental threats; attitudes toward responsibility, regulation, and management; and reported behavioral practices such as waste disposal, compliance with site rules, and support for conservation measures. Most attitudinal items use a five-point Likert scale, while a smaller number of factual and behavioral items use categorical response formats.
A pilot survey is conducted prior to full deployment in order to test clarity, reliability, and contextual relevance. Necessary revisions are made after the pilot phase. Depending on field conditions, the final questionnaire may be administered through face-to-face survey, interviewer-assisted schedule, or mobile form-based entry.
3.6.3 Semi-Structured Interviews
Semi-structured interviews are conducted to explore the institutional and managerial dimensions of the study. Interview themes include perceived environmental threats, current management practices, enforcement challenges, inter-agency coordination, visitor management, awareness-building efforts, and policy implementation barriers. The semi-structured format allows the researcher to maintain comparability across interviews while also capturing detailed, context-specific insights.
Interviews are audio-recorded where consent is granted, and otherwise documented through detailed note-taking. The qualitative evidence generated through interviews is especially important for understanding why pollution-related issues persist and how formal policy commitments are translated, or fail to be translated, into operational routines.
3.6.4 Policy and Document Review
A systematic review of policy and institutional documents is undertaken to identify the formal framework governing heritage protection and environmental management at the site. The review includes UNESCO guidance relevant to world heritage management, site-related documentation, and applicable national and local provisions concerning archaeology, environment, tourism, and site administration. The aim is to compare stated policy commitments with actual field practice, thereby identifying gaps in implementation, ambiguity of responsibility, or weakness in enforcement mechanisms.
3.7 Operationalization of Variables
Environmental pollution is operationalized as a composite of visible and site-relevant stress indicators, including litter, plastic waste, stagnant water, drainage-related vulnerability, vegetation growth, erosion, and unmanaged visitor impact. Stakeholder awareness is operationalized through knowledge of site significance, understanding of environmental threats, and familiarity with site rules. Environmentally responsible behavior is measured through self-reported practices such as proper disposal of waste, compliance with movement restrictions, and support for conservation regulations. Policy implementation is operationalized through indicators such as monitoring frequency, signage adequacy, enforcement consistency, maintenance systems, and coordination among responsible agencies.
This operationalization enables direct comparison between observed site conditions and stakeholder or institutional variables. For example, zones with higher pollution scores can be compared against areas of higher visitor concentration or weaker monitoring. Similarly, stakeholder groups with higher awareness scores can be tested for stronger conservation-supportive attitudes.
3.8 Data Analysis
Quantitative survey data are entered into a statistical software package and analyzed through descriptive statistics, including frequencies, means, and standard deviations. Inferential analysis is then used to test relationships among variables. Cross-tabulation and chi-square tests are used to examine group differences, while correlation and regression models are used where sample size and distribution permit. These analyses support the testing of hypotheses concerning the relationship between awareness, behavior, visitor pressure, and environmental condition.
Qualitative interview data are analyzed using thematic analysis. Interview transcripts and notes are coded iteratively to identify recurring themes such as monitoring challenges, coordination gaps, visitor pressure, awareness deficits, maintenance limitations, and institutional constraints. These themes are then compared with survey findings and spatial evidence.
Spatial observation data are analyzed through zone-based comparison and, where possible, geospatial visualization. Pollution hotspot maps, circulation overlays, and management-priority maps are generated to identify concentrations of environmental stress. The final analytical step integrates quantitative, qualitative, and spatial findings in order to produce a multi-layered interpretation of the site’s environmental governance condition.
3.9 Reliability, Validity, and Trustworthiness
Several procedures are adopted to strengthen research rigor. First, the questionnaire is pilot-tested to improve reliability and internal consistency. Second, observation categories are standardized to reduce recording bias. Third, triangulation is built into the design by comparing findings from field observation, survey responses, interviews, and documentary review. Fourth, interview themes are checked against documentary evidence to reduce overreliance on perception alone. In qualitative terms, credibility is enhanced through careful documentation, iterative coding, and transparent interpretation.
3.10 Ethical Considerations
The study follows standard academic research ethics. Survey and interview participants are informed of the purpose of the study and their voluntary right to participate or withdraw. Confidentiality and anonymity are protected in the reporting of individual responses. Permission is obtained from relevant site authorities for fieldwork, observation, and photography where required. Care is taken to ensure that data collection does not disturb protected archaeological remains or interfere with conservation practice.
3.11 Limitations
The study has several foreseeable limitations. First, environmental conditions may vary seasonally, meaning that pollution or water-related stress visible during one survey period may not fully represent annual patterns. Second, some implementation information may depend on access to institutional documentation or the willingness of officials to participate. Third, self-reported questionnaire responses may be affected by social desirability bias. These limitations do not invalidate the study, but they should be acknowledged when interpreting findings. The mixed-method design is intended in part to mitigate these constraints by allowing evidence from one source to be checked against others.
References
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