水资源与水工程学报2017，Vol.28Issue(4)：21-27,34,8.DOI:10.11705/j.issn.1672-643X.2017.04.04
澜沧江流域水文气象要素变化特征分析
Characteristics analysis of hydrometeorologicalelements in Lancang River Basin
摘要
Abstract
Taking Lancang River Basin as a study object, the spatial distribution, intra-annual distribution and evolution trends of temperature and precipitation between 1958 to 2015 were analyzed by using climate tendency rate, MK-test and Pearson correlation analysis, and the diving factors of runoff evolution were revealed.Results indicate that the spatial and intra-annual distribution of the temperature and precipitation is uneven.The upstream has low temperature and few rainfall, while the downstream is on the contrary.The precipitation and runoff distributed uneven in the year, mainly in the summer and autumn.The runoff peak comes one month later than rainfall peak.From 1958 to 2015, the trend of temperature is rising and the trends of rainfall and runoff are falling.Runoff mutation occurred in 2005 and the annual runoff decreased by 21.5％.Runoff reduction is mainly associated with rising temperature and decreasing rainfall.Temperature is weakly correlated to runoff.Precipitation was well correlated to runoff before 2005 while poorly correlated after 2005, especially in summer and fall.关键词
气象要素/降水/气温/径流突变/相关性/澜沧江流域Key words
meteorological elements/precipitation/temperature/runoff mutation/correlation/the Lancang River basin分类
天文与地球科学引用本文复制引用
李海川,王国庆,郝振纯,刘翠善,刘佩瑶,吴辰,谷一,徐梦珂,付晓雷..澜沧江流域水文气象要素变化特征分析[J].水资源与水工程学报,2017,28(4):21-27,34,8.基金项目
国家"十三五"重点研发计划(2016YFA0601501,2016YFA0601601,2016YFC0402704,2016YFA0601602) （2016YFA0601501,2016YFA0601601,2016YFC0402704,2016YFA0601602）
国家自然科学基金项目(41330854,41371063,41371047) （41330854,41371063,41371047）
中国工程院重大咨询项目(2015-ZD-07) （2015-ZD-07）
河海大学水文水资源与水利工程科学国家重点实验室开放基金面上项目(2015490311) （2015490311）
