Climate Change And Water Resources In South Asia

This book addresses the most pressing water resource issues in South Asia, particularly in relation to climate change and variability. This is a region characterised by abundant water during the monsoon, when devastating floods occur, and by scarcity of water and droughts during the dry period. These extreme events often cause substantial damage to

Climate change on earth is having significant impacts on water resources management in Southeast Asia. Knowledge of climate variations and climate change can be valuable for water resources management in agriculture, urban and industrial water supplies, hydroelectric power generation, and ecosystem maintenance. This book presents the findings of case studies on forecasting climate change and its impacts on water availability, irrigation water requirements, floods and droughts, reservoir inflows and hydropower generation, and crop yield in specific basins of Southeast Asian countries such as Thailand, Myanmar, and Vietnam. All case studies start by forecasting the climate change and investigating its impacts by employing several hydrological reservoir simulations and crop water requirement models. The findings provide sound and scientific advice for water managers on the real impacts of climate change and how to adapt to its many challenges.

This book highlights various challenges and opportunities for water management and cooperation in South Asia. In light of increasing urbanization and development in the region and related pressure on water resources, the contributions investigate water conflictual and cooperative attitudes and gestures between countries and regions; analyse management trade-offs between nature, agriculture and urban uses; and examine water sustainable management and related policies. By studying major river basins in the region, such as Indus, Ganges, Brahmaputra, Narmada, Godavari and Krishna, the chapters highlight socio-economic, infrastructural, environmental and institutional aspects of water scarcity in South Asia and present best practices for improved sustainable water management and security in the region.

Water management is a key development challenge in South Asia. The region - one of the most densely-populated and climate-vulnerable parts of the world - has the world's fastest growing regional economy and the largest proportion of poorest people. With 23.7 percent of the global population, but only 4.6 percent of the world's renewable water resources, the management of water is a key development challenge for sustaining growth, livelihoods, and resilience. The key features of this challenge are ensuring a reliable supply of water for food, people, energy, and industry, and managing the consequences of extreme hydrological events. Climate change will compound this challenge; it will impact, though unevenly, water supply, demand and quality, and exacerbate extreme hydrological events.

This book provides an ecosystem perspective in addressing the water resource management issues in the South Asian region. It argues that aspects such as sources of water, its distribution and users; land–water interrelations; drivers of change such as laws, policies and institutions; management of issues and technologies related to water supply; institutional set-up; economic instruments such as pricing, taxes, subsidies; and economics of ecosystem services are crucial. Climate changes, melting of glaciers and polar ice caps, rising sea level and the increased frequency of extreme events, have to be factored into integrated management of water resources. This book addresses some of these major issues related to aquatic ecosystems and focuses on three major aspects: (a) concepts related to ecosystems, ecosystem services and their linkages with water; (b) human impacts on ecosystems, particularly the aquatic ecosystems, and their assessment; and (c) the management, including policy, governance and economics. Comprising new theories, research and case studies, the book will be useful those concerned with water resource management – professionals, students and researchers.