Variations and trends of trans-boundary runoff in the longitudinal range-gorge region  

作　　者：YU Yan-ling PAN Feng LIU Xin-you CHEN Wen-hua HE Da-ming 

机构地区：[1]Water Conservancy College,Yunnan Agricultural University,Kunming 650201,China [2]Key Laboratory of International River and Transboundary Eco-security,Yunnan University,Kunming 650091,China [3]Electric power engineering college,Kunming University of Science and Technology,Kunming 650093,China [4]State Key Laboratory of hydrology water resources and hydraulic engineering,Hohai University,Nanjing 210098,China [5]Hydrology and water resources Bureau,Yunnan Province,Kunming 650106,China [6]Baoshan College,Baoshan 678000,China

出　　处：《Journal of Mountain Science》2017年第2期316-324,共9页山地科学学报（英文）

基　　金：funded by the National Key Research and Development Program of China(Grant No.2016YFA0601600);the Key Project of National Natural Science Foundation of China(Grant No.U1202232)

摘　　要：The mountainous hydrological process usually shows high variation to climate change and human action. In the Longitudinal Range-Gorge Region（LRGR）, Southwestern China and Southeast Asian, the transboundary runoff variations are much more sensitive and complex under the interaction of climate change, ＂corridor-barrier＂ functions in LRGR,and dams building. In this paper, based on the long hydrological records（1956-2013） from three mainstream hydrological stations in Nu River,Lancang River, and Red River, the region runoff variations were analyzed. The results show out： i） the regional runoff changes were strongly influenced by the ＂Corridor-Barrier＂ functions in LRGR from west to east, the variability extent of annual runoff increased, but tended to decrease after 2009 and the reduced extents also increased; ii） the annual runoff change in the three rivers had high concentration degrees; iii） there were periodicities of 33 years of runoff change in Nu River and Lancang River, and 30 years in Red River, and the lower flow period would continue for 8-9 years in Nu River and Lancang River but only for 4 years in Red River; iv） since 2010, as the two mega dams of Xiaowan and Nuozhadu built in Lancang River mainstream, their variations of annual runoff were quite different. The research results could offer a scientific base for sustainable utilization,conservation, and management of the regional water resources

关 键 词：Runoff variations Climate change ＂Corridor-barrier＂ functions Longitudinal rangegorge region Transboundary rivers 

分 类 号：P333[天文地球—水文科学]