思茅境内澜沧江径流变化量与云南气候变化的关系  

CORRELATION CHARA CTERISTICS BETWEEN THE SIMAO LANCANG RIVER FLOWS AND THE CLIMATE VARIATIONS IN YUNNAN

作　　者：索渺清[1] 尤卫红[1] 马学文 胡学祥[3] 吴捷[3] 赵江 

机构地区：[1]云南大学资源环境与地球科学学院,云南昆明650091 [2]云南省思茅市气象局,云南思茅665000 [3]云南省水文水资源局思茅分局,云南思茅665000

出　　处：《云南地理环境研究》2005年第3期1-8,共8页Yunnan Geographic Environment Research

基　　金：国家973计划(2003CB415100);云南省自然科学基金重点项目(2001D0002Z);云南省自然科学基金项目(2004D0005M);云南大学重点科研项目(2002Z003ZH);云南省气象局"短平快"项目(YD0313);思茅地区科技局软科学研究计划(ST2003-A06).

摘　　要：以思茅澜沧江流域下游思茅境内水文站1960年1月～2001年12月的逐月径流量和云南的月雨量(气温)场格点资料为基础,用相关分析的方法,研究了思茅境内澜沧江流域的东西部径流量变化及其与云南气候变化的关系。结论为:思茅境内澜沧江下游流域的径流量变化与滇西南的降水量变化有显著的相关关系,其季节特征为春夏季较好,秋冬季次之;与元江河谷一带的气温变化也有显著的反相关关系,其中西部流域还与滇南的气温变化有显著的相关关系,其季节特征则为冬春季较好,夏秋季不显著。20世纪80年代以来,该流域的气温变化呈上升趋势,且西部升温的上升趋势更显著,气温上升对径流量的变化起减小的作用;20世纪90年代以来,该流域的东西部降水量变化出现了显著的差异,其东部的降水量明显增多,与此相一致,其东部径流量变化的增幅也明显大于其西部。Based on the data of the monthly Simao Lancang River Basin flow in Simaos , the precipitation and air temperature fields in Yunnan from 1960.1～2001.12, with the correlation analysis method, the correlation characteristics between the cthe variations oforrelation characteristics between the lower Lancang River flow and the climate variations in Yunnan the Simao Lancang River Basin flows in the East and West Valley and the variations of precipitation, air temperature field in Yunnan are investigated. The results show that the monthly precipitation field in southwest region of Yunnan has a significant influence on the flow variationsfor Basin,and its the seasonal correlation cthe variations oforrelation characteristics sin Spring and Summer are are better butthan in Autumn and Winter. The air temperature variations around of Yuanjiang region has make also a significant inverse correlation on the flow and its , especially the west valley is related to the south of Yunnan, the seasonal correlation characteristicss are are better in Winter and Spring,better, but in Summer and in Autumn, and have little to do is not significantwith Summer and Autumn.Since 1980's, the air temperature of the valley are warm uper apparently, especially west,this has a role of decreasing the flows. From the beginning of 1990's, the variationss of east precipitation in the east differ from andthe west, valley have obvious difference, in the late of 1990's, the east precipitation in the east increasingegrows more apparently. than the west. Corresponding to the features,the east flowss in the east increase more obviously larger than the west.

关 键 词：澜沧江径流 气候变化 思茅 

分 类 号：P93[天文地球—自然地理学]