Case studies Water Resources 3 Watershed management Watersheds 3 Land Resources 2 Natural Resource Economics, (New March 2000) 2 Pollution and Degradation 2 Sustainability 2 Water management 2 Water resources 2 Agencies and Organizations 1 Agricultural Economics 1 Agricultural development 1 Aquatic Biology and Ecology 1 Aquatic animals 1 Aquatic plants 1 Catchment hydrology 1 Climatic change 1 Climatic changes 1 Crops and climate 1 Crops and water 1 Deforestation 1 Ecohydrology 1 Ecological restoration 1 Ecology 1 Economic policy 1 Ecosystems 1 Environmental management 1 Erosion 1 Erosion: Soil and Water Conservation 1