文献类型：期刊文献

英文题名：Impacts of rainfall and air temperature variations due to climate change upon hydrological characteristics: a case study

作者：Ouyang, Ying[1] Zhang, Jia-En[2] Li, Yide[3] Parajuli, Prem[4] Feng, Gary[5]

第一作者：Ouyang, Ying

通信作者：Ouyang, Y[1]

机构：[1]US Forest Serv, USDA, Southern Res Stn, 100 Stone Blvd,Thompson Hall,Room 309, Starkville, MS 39762 USA;[2]South China Agr Univ, Dept Ecol, Wushan Rd, Guangzhou, Guangdong, Peoples R China;[3]Chinese Acad Forestry, Res Inst Trop Forestry, Guangzhou 510520, Guangdong, Peoples R China;[4]Mississippi State Univ, Dept Agr & Biol Engn, Mail Box 9632, Starkville, MS 39762 USA;[5]USDA ARS, Crop Sci Res Lab, 810 Hwy 12 East, Starkville, MS 39762 USA

年份：2015

卷号：6

期号：4

起止页码：865-879

外文期刊名：JOURNAL OF WATER AND CLIMATE CHANGE

收录：;EI(收录号：20160701924809);Scopus(收录号：2-s2.0-84957682185);WOS:【SCI-EXPANDED(收录号:WOS:000374410700016)】；

语种：英文

外文关键词：evaporative loss; HSPF model; rainfall; temperature; water outflow; watershed

摘要：Rainfall and air temperature variations resulting from climate change are important driving forces to change hydrologic processes in watershed ecosystems. This study investigated the impacts of past and future rainfall and air temperature variations upon water discharge, water outflow (from the watershed outlet), and evaporative loss in the Lower Yazoo River Watershed (LYRW), Mississippi, USA using the Hydrological Simulation Program-Fortran (HSPF) model. Four future climate change (i.e., rainfall and air temperature change) scenarios, namely the CSIROMK35A1B, HADCM3B2, CSIROMK2B2, and MIROC32A1B scenarios, were used as input data to perform simulations in this study. Results showed that monthly variations of water discharge, evaporative loss, and water outflow were primarily due to the monthly fluctuations of rainfall rather than air temperature. On average, for all of the four scenarios, a 6.4% decrease in rainfall amount resulted in, respectively, 11.8 and 10.3% decreases in water outflow and evaporative loss. Our study demonstrated that rainfall had profound impacts upon water outflow and evaporative loss. In light of this predicted future decrease in water outflow, water resource conservation practices such as reducing ground and surface water usages that help to prevent streams from drying are vitally important in mitigating climate change impacts on stream flow in the LYRW.