Dry land farming in India accounts for 63% of the cultivated land of 144 million hectares. The crop production on these lands is dependent entirely on the natural precipitation, which is highly erratic in terms of spatial and temporal distribution during the crop-growing season. To address these problems, Government of India has accorded high priority to watershed approach for development of ra...

The prediction of hydrologic conditions in watersheds has manifold applications, ranging from flood disaster preparedness to water supply and environmental flow management. In with scarce or no data, it is difficult make accurate predictions. Past work used similarity single-valued properties the terrain (for example, drainage area, mean slope) as basis relate gauged ungauged ones. resulting pr...

The size, scale, and number of subwatersheds can affect a watershed modeling process and subsequent results. The objective of this study was to determine the appropriate level of subwatershed division for simulating flow, sediment, and nutrients over 30 years for four Iowa watersheds ranging in size from 2,000 to 18,000 km2 with the Soil and Water Assessment Tool (SWAT) model. The results of th...

Hydrological models provide water managers with the available amount of water in the watershed. In this paper, we firstly developed a system dynamics model to calculate the available amount of water in the watershed. Then, we defined two scenarios one of which is the development scenario describing how land use changes can affect water availability in the watershed. Next, we divided the watersh...

Priority 1.1.6 "Sustainable Development, Global Change and Ecosystems" Sub-Priority 1.1.6.3 " Global Change and Ecosystems " Dissemination Level PU Public X PP Restricted to other programme participants (including the Commission Services) RE Restricted to a group specified by the consortium (including the Commission Services) CO Confidential, only for members of the consortium (including the Co...

We study hierachical segmentation in the framework of edgeweighted graphs. We define ultrametric watersheds as topological watersheds null on the minima. We prove that there exists a bijection between the set of ultrametric watersheds and the set of hierarchical edgesegmentations.

Water temperature is an abiotic master variable for the survival of aquatic organisms. Global warming alters thermal regimes rivers and, thus, poses a threat to freshwater biodiversity. To address impacts water changes related global on fish species in life cycle assessment (LCA), we developed spatially explicit characterization factors (CFs) 207 greenhouse gases under four representative conce...

Regionalization of agricultural research across countries has received considerable attention in recent years, with the establishment of regional and sub-regional organizations in most regions. Recently, the CGIAR System has called for a regional approach to research involving bottom-up priority-setting and implementation, and integrating this with global priority-setting. This paper explores t...