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Adapting to Uncertainties: Assessing the impacts of dams, Climate Change, and resource shifts on farming livelihoods in the Lower Mekong region
Adapting to Uncertainties: Assessing the impacts of dams, Climate Change, and resource shifts on farming livelihoods in the Lower Mekong region
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211153043
- ISBN
- 9798346745013
- DDC
- 338.9
- 서명/저자
- Adapting to Uncertainties: Assessing the impacts of dams, Climate Change, and resource shifts on farming livelihoods in the Lower Mekong region
- 발행사항
- [Sl] : Michigan State University, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 129 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-06, Section: B.
- 주기사항
- Advisor: Kramer, Daniel Boyd.
- 학위논문주기
- Thesis (Ph.D.)--Michigan State University, 2024.
- 초록/해제
- 요약The Lower Mekong region (LMR) is experiencing rapid social-ecological changes due to infrastructure development and climate change. The construction of dams along the Mekong River and its tributaries has triggered significant biophysical alterations, including changes in water flow, nutrient cycling, and sediment exchange. These changes have profound implications for the 86 percent of the Lower Mekong Basin (LMB) population who rely on the river for their livelihoods, primarily in agriculture and fisheries. Besides, the region faces an increasing frequency of extreme climate events, particularly droughts and floods. These combined pressures have heightened the vulnerability of resource-dependent communities, further exacerbated by unjust resource governance that often marginalizes them.This dissertation explores the multifaceted challenges faced by resource-dependent communities in the LMR, with a particular focus on their responses to the uncertainties driven by dams, climate change, and resource shifts. The study hypothesizes that most noticeable changes are occurring at the household level, influenced by their perceptions of climate risk and their capacity to access and utilize vital livelihood resources. These shifts exert pressures on land and watershed ecosystems, raising concerns over the sustainability of critical ecosystem services. Adopting a mixed-method approach, this research unfolds across three chapters:Chapter 1 assesses the impacts of dams on various livelihood resources in downstream farming communities at different distances from affected rivers, using unbalanced panel data analysis. The findings reveal a decrease in natural and financial resource accessibility, alongside a positive effect on physical resource accessibility post-dam construction. Communities closer to dams (10 km) experience more pronounced negative effects on natural resources, while financial resource access improves for those within 20 km. Physical resources show spatial improvements, primarily within 10 km. Although no temporal effects are observed for social resources, spatial effects indicate reduced accessibility near dams. However, communities nearby irrigation dam experience increased social resource access post-dam construction. These findings highlight the spatial and temporal variations in resource impacts, emphasizing key areas for improving Environmental Impact Assessments (EIAs) and adaptation strategies to better support downstream ecosystems and communities.Chapter 2 delves into drought risk perceptions among households in irrigated and flood-pulse communities, exploring the factors explaining variations in risk perception at both household and community levels. Utilizing a mixed-effects model alongside qualitative information from interviews and observations, this chapter reveals the significance of psychological and socio-economic factors, including households' knowledge of drought, perceived ability, affiliation with various organizations, and wealth condition, shaping risk perception. These findings suggest the development of context-tailored risk communication and management strategies, enhancing the adaptive capacity of vulnerable communities.Chapter 3 examines the role of perceived peer effect and formal networks in shaping farmers' adaptive behaviors using influence network modeling. The findings suggest the need for leveraging both formal and informal networks, increasing knowledge about drought and improving economic conditions to build farmers' capacity to navigate climate-related challenges and adopt practices that ensure the sustainability of resource-dependent farming communities in Cambodia and beyond.
- 일반주제명
- Sustainability
- 일반주제명
- Climate change
- 일반주제명
- Aquatic sciences
- 기타저자
- Michigan State University Fisheries and Wildlife - Doctor of Philosophy
- 기본자료저록
- Dissertations Abstracts International. 86-06B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■020 ▼a9798346745013
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■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a338.9
■1001 ▼aSainjoo, Snehalata.▼0(orcid)0000-0003-3052-1272
■24510▼aAdapting to Uncertainties: Assessing the impacts of dams, Climate Change, and resource shifts on farming livelihoods in the Lower Mekong region
■260 ▼a[Sl]▼bMichigan State University▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a129 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-06, Section: B.
■500 ▼aAdvisor: Kramer, Daniel Boyd.
■5021 ▼aThesis (Ph.D.)--Michigan State University, 2024.
■520 ▼aThe Lower Mekong region (LMR) is experiencing rapid social-ecological changes due to infrastructure development and climate change. The construction of dams along the Mekong River and its tributaries has triggered significant biophysical alterations, including changes in water flow, nutrient cycling, and sediment exchange. These changes have profound implications for the 86 percent of the Lower Mekong Basin (LMB) population who rely on the river for their livelihoods, primarily in agriculture and fisheries. Besides, the region faces an increasing frequency of extreme climate events, particularly droughts and floods. These combined pressures have heightened the vulnerability of resource-dependent communities, further exacerbated by unjust resource governance that often marginalizes them.This dissertation explores the multifaceted challenges faced by resource-dependent communities in the LMR, with a particular focus on their responses to the uncertainties driven by dams, climate change, and resource shifts. The study hypothesizes that most noticeable changes are occurring at the household level, influenced by their perceptions of climate risk and their capacity to access and utilize vital livelihood resources. These shifts exert pressures on land and watershed ecosystems, raising concerns over the sustainability of critical ecosystem services. Adopting a mixed-method approach, this research unfolds across three chapters:Chapter 1 assesses the impacts of dams on various livelihood resources in downstream farming communities at different distances from affected rivers, using unbalanced panel data analysis. The findings reveal a decrease in natural and financial resource accessibility, alongside a positive effect on physical resource accessibility post-dam construction. Communities closer to dams (10 km) experience more pronounced negative effects on natural resources, while financial resource access improves for those within 20 km. Physical resources show spatial improvements, primarily within 10 km. Although no temporal effects are observed for social resources, spatial effects indicate reduced accessibility near dams. However, communities nearby irrigation dam experience increased social resource access post-dam construction. These findings highlight the spatial and temporal variations in resource impacts, emphasizing key areas for improving Environmental Impact Assessments (EIAs) and adaptation strategies to better support downstream ecosystems and communities.Chapter 2 delves into drought risk perceptions among households in irrigated and flood-pulse communities, exploring the factors explaining variations in risk perception at both household and community levels. Utilizing a mixed-effects model alongside qualitative information from interviews and observations, this chapter reveals the significance of psychological and socio-economic factors, including households' knowledge of drought, perceived ability, affiliation with various organizations, and wealth condition, shaping risk perception. These findings suggest the development of context-tailored risk communication and management strategies, enhancing the adaptive capacity of vulnerable communities.Chapter 3 examines the role of perceived peer effect and formal networks in shaping farmers' adaptive behaviors using influence network modeling. The findings suggest the need for leveraging both formal and informal networks, increasing knowledge about drought and improving economic conditions to build farmers' capacity to navigate climate-related challenges and adopt practices that ensure the sustainability of resource-dependent farming communities in Cambodia and beyond.
■590 ▼aSchool code: 0128.
■650 4▼aSustainability
■650 4▼aClimate change
■650 4▼aNatural resource management
■650 4▼aAquatic sciences
■653 ▼aLower Mekong region
■653 ▼aSocial-ecological changes
■653 ▼aInfrastructure development
■690 ▼a0640
■690 ▼a0404
■690 ▼a0528
■690 ▼a0792
■71020▼aMichigan State University▼bFisheries and Wildlife - Doctor of Philosophy.
■7730 ▼tDissertations Abstracts International▼g86-06B.
■790 ▼a0128
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17164768▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


