• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International journal of ecohydrology and hydrobiology >Impacts of Climate and Land Use Change on Hydrological Response in Gumara Watershed, Ethiopia
【24h】

Impacts of Climate and Land Use Change on Hydrological Response in Gumara Watershed, Ethiopia

机译：Impacts of Climate and Land Use Change on Hydrological Response in Gumara Watershed, Ethiopia

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相关主题

摘要

Climate and land-use change affect the hydrologic cycle by altering the hydrological responses including streamflow (SF), surface runoff(SR), base-flow (BF), and evapotranspiration (ET). Several studies have addressed the separate impacts of either land-use or climate change on the watershed hydrology, but few have explored the combined impacts. In this study, the SWAT model was applied to evaluate the combined impacts of land-use and climate change on hydrological responses in Gumara watershed. This study examined four land-use scenarios that include the present and projected land-use based on the businessas-usual trend (BAU), expansion of irrigation crop (EIC), and expansion of forestland (EFL). Climate variables were simulated using Weather Research and Forecasting (WRF) model for the baseline (2005-2015) and projected period (2045-2055) under RCP4.5 and RCP8.5 scenarios. Results showed that SR increase by 5.1 under BAU scenario while BF decrease by 6.5 without altering SF and ET noticeably. On the contrary, SF decrease by 12.5 and 5.2 respectively under EIC and EFL scenarios, while ET increase by 4.8 and 8.9 respectively under EIC and EFL scenarios. The simulated SF, SR, and ET under RCP8.5 may increase significantly by 34.3, 51.8, and 12.2, respectively. Similarly, the simulated SF, SR and ET may increase significantly under the combination of all three land-use and RCP8.5 scenarios. This suggested that climate change will have a greater effect on hydrologic responses than land-use change. The results of this study can be useful to decision-makers and planners in the design of adaptive measures to climate and land-use change. (C) 2020 European Regional Centre for Ecohydrology of the Polish Academy of Sciences. Published by Elsevier B.V. All rights reserved.

著录项

获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号