Spatio-temporal trends in precipitation and their implications for water resources management in climate-sensitive Nepal |
| |
| Institution: | 1. Dept. Civil and Environmental Engineering ICA, Politecnico di Milano, Politecnico di Milano, L. Da Vinci, 32, 20133, Milano, Italy;2. Dept. Architecture Built Environment and Construction Engineering ABC, Politecnico di Milano, G. Ponzio, 31, 20133 Milano, Italy;1. College of Marine Geosciences, Key Laboratory of Submarine Geosciences and Prospecting Technology, Ocean University of China, 238 Songling Road, Qingdao 266100, China;2. Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology (QNLM), Qingdao 266061, China;3. State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan 430072, China;4. Institute for Infrastructure and Environment, School of Engineering, The University of Edinburgh, The King''s Buildings, Edinburgh EH9 3JL, UK;5. School of Engineering, Mathematics and Computing, University of Plymouth, Drake Circus, Plymouth PL4 8AA, UK;6. School of Geography and the Environment, University of Oxford, Oxford OX1 3QY, UK;7. Community Surface Dynamics Modeling System, INSTAAR, University of Colorado, Boulder, CO 80309-0545, USA |
| |
| Abstract: | As one of the world's most water-abundant countries Nepal has plenty of water, yet resources are unevenly distributed, both spatially and temporally. Limited accessibility and poorly managed water resources continue to inhibit socioeconomic development. Poverty levels are high across the nation (57% of the population lives below the international poverty line) and population expansion, coupled with rapid environmental change, is thought to be placing substantial pressure on water resources; an irrefutable asset for sustaining livelihoods and an essential contributing factor for alleviating poverty. Precipitation is a vital water resource for much of the rural population, 80% of which are dependent on rain-fed agriculture for their livelihoods, and fluctuations in which can give rise to changing states of poverty. Here we provide a comprehensive spatiotemporal analysis of precipitation time-series data for Nepal and discuss the contribution of precipitation change to water resources management for this land-locked Himalayan nation. We show that precipitation totals have predominantly remained stable; precipitation extremes and variability indicate widespread decrease; and no clear variation in monsoon onset date is reported. Based on these results, we suggest that water resources management needs to focus on population and environmental pressures, rather than specifically mitigating for precipitation change. |
| |
| Keywords: | Precipitation Trends Nepal Water resources Poverty Livelihoods |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
