DOI: 10.3724/SP.J.1201.2011.01053

South-to-North Water Diversion and Water Science & Technology (南水北调与水利科技) 2011/9:1 PP.53-59

Spatial and temporal Variations of Precipitation and Runoff in the Source Region of the Yangtze River

The source region of the Yangtze River lies to northeast of the Northwestern Plateau in Sichuan,which is one of the most important areas of the Three-River headwaters region in China.In the recent 40 years,the frozen earth-ecological environment system in this area has changed greatly with climate warming.Particularly,the annual runoff decreased continuously,and the variation of the runoff had affected the function of conservation on water supply in the source region of the Yangtze River at the same time.Therefore,it is urgent to study the spatial-temporal variation of the runoff in the source region of the Yangtze River.Based on the data from the hydrologic and meteorological stationsincluding Tuotuo River,Wudaoliang,Zhiduo,Qumalai and Yushu,a multiple time scales analysis has done to show the annual,inter-annual and decadal variations of the precipitation and runoff.Furthermore,the calculating results showed that annual runoff of the source region of the Yangtze River changed with precipitation,the runoff seasonal distribution focused from May to October and had a reducing trend,and decadal changes of runoff did not show obvious trend.These results have a very important scientific value and a practical meaning to the further study on the water resources security and the ecological environment in this area,the sustainable utilization of water resources in the middle and lower reaches of the river,and the security of the regional ecosystem in the Three Gorges reservoir area especially.

Key words:the source region of the Yangtze River,precipitation,runoff,spatial and temporal variations

ReleaseDate:2014-07-21 15:58:58

[1] WU Qing-bai,ZHOU Yuan-lin,LIU Yon-zhi.Evaluation Model Permafrost Thermal Stability and Thawing Sensibility under Human Activity[J].Cold Regions Science and Technology,2002,34:19-30.

[2] 赵林,程国栋,李述训,等.青藏高原五道梁附近多年冻土活动冻结和融化过程[J].科学通报,2000,45(11):1205-121.(ZHAO Lin,CHENG Guo-dong,LI Xu-xun,Thermal Exchange of the Frozen Grounds in the Nearby of Wudaoliang in Tibetan Plateau[J].Chinese Science Bulletin,2000,(45)11:1205-121.(in Chinese))

[3] 王根绪,丁永建,王建,等.近15年来长江黄河源区的土地覆被变化[J].地理学报,2004,59(2):163-173.(WANG Gen-xu,DING Yong-jian,WANG Jian.Land Ecological Changes and Evolutional Patterns in the Source Regions of the Yangtze and Yellow Rivers in recent 15 years[J].Acta Geographica Sinica,2004,59(2):163-173.(in Chinese))

[4] 王可丽,程国栋,丁永健,等.黄河、长江源区降水变化的水汽输送和环流特征[J].冰川冻土,2006,28(2):8-14.(WANG Ke-li,CHENG Guo-dong,DING Yong-jian,et al.Characteristics of Water Vapor Transport and Atmospheric Circulation for Precipitation Over the Source Regions of the Yellow and Yangtze Rivers[J].Journal of Glaciology and Geocryology,2006,28(2):8-14.(in Chinese))

[5] 康世昌,张拥军,秦大河,等.近期青藏高原长江源区急剧升温的冰心证据[J].科学通报,2007,52(4):457-462.(KANG Shi-chang,ZHANG Yong-jun,QIN Da-he,et al.Recent Temperature Increase Recorded in an Ice Core in the Source Region of Yangtze River[J].Chinese Science Bulletin,2007,52(4):457-462.(in Chinese))

[6] 杨建平,丁永建,刘时银,等.长江黄河源区冰川变化及其对河川径流的影响[J].自然资源学报,2003,18(5):595-603.(YANG Jian-ping,DING Yong-jian,LIU Shi-yin,et al.Glacier Change and its Effect on Surface Runoff in the Source Regions of the Yangtze and Yellow rivers[J].Journal of Natural Resources,2003,18(5):595-603.(in Chinese))

[7] 王根绪,李元寿,王一博,等.近40年来青藏高原典型高寒湿地系统的动态变化[J].地理学报,2007,62(5):481-491.(WANG Gen-xu,LI Yuan-shou,WANG Yi-bo,et al.Typical Alpine Wetland System Changes on the Qinghai-Tibet Plateau in Recent 40 Years[J].Acta Geographica Sinica,2007,62(5):481-491.(in Chinese))

[8] 王根绪,李元寿,王一博,等.长江源区高寒生态与气候变化对[JP+3]河流径流过程的影响分析[J].冰川冻土,2003,29(4):161-168. (WANG Gen-xu,LI Yuan-shou,WANG Yi-bo,et al.Impacts of Alpine Ecosystem and Climate Changes on Srface Runoff in the Headwaters of the Yangtze River[J].Journal of Glaciology and Geocryology,2003,29(4):161-168.(in Chinese))

[9] 曹建廷,秦大河,罗勇,等.长江源区1956-2000年径流量变化分析[J].水科学进展,2007,18(1):29-33.(CAO Jian-ting,QIN Da-he,LUO Yong.Discharge Changes of the Yangtze River in Source Area During 1956-2000[J].Advances in Water Science,2007,18(1):29-33. (in Chinese))

[10] 余烜,申宿慧,杨舒媛,等.长江源区径流演变特征及其预测[J].水电能源科学,2008,26(6):14-16.(YU Xuan,SHEN Su-hui,YANG Shu-yuan,et al.Characteristic and Forecast of Runoff Change in Source Region of Yangtze River[J].Water Resources and Power,2008,26(6):14-16.(in Chinese))

[11] 谢昌卫,丁永建,刘时银,等.长江-黄河源寒区径流时空变化特征对比[J].冰川冻土,2003,25(4):414-422.(XIE Chang-wei,DING Yong-jian,LIU Shi-yin,et al.Comparison analysis of runoff change in the source regions of the Yangtze and Yellow Rivers[J].Journal of Glaciology and Geocryology,2003,25(4):414-422.(in Chinese))

[12] 谢昌卫,丁永建,刘时银.近50年来长江—黄河源区气候及水文环境变化趋势分析[J].生态环境,2004,13(4):520-523.(XIE Chang-wei,DING Yong-jian,LIU Shi-yin.Changes of Weather and Hydrological Environment for the Last 50 Years in the Source Regions of Yangtze and Yellow Rivers[J].Ecology and Environment,2004,13(4):520-523.(in Chinese))

[13] 杨针娘,刘新任,曾群柱.中国寒区水文[M].北京:科学出版社,2000.(YANG Zhen-niang,LIU Xin-ren,ZENG Qun-zhu. Chinese cold regions hydrology[J].Beijing:Science Press,2000.(in Chinese))

[14] 康尔泗,杨针娘,赖祖铭,等.冰雪融水径流与山区河川径流[A].施雅风.中国冰川与环境—现在、过去与未来[C].北京:科学出版社,2000:190-205.(KANG Er-si,YANG Zhen-niang.LAI Zu-ming,et al.Glacial Melt Water Runoff and Mountain Area Runoff[A].SHI Ya-feng.Chinese Glaciers and Environment-the Present,Past and Future[C].Beijing:Science Press,2000:190-205.(in Chinese))