江淮分水岭易旱区近50余年降水量时空变化研究  

Spatial-temporal Change of Precipitation over Semi Arid Area of Jianghuai Watershed in 1960 through 2012

作　　者：王秋龙[1] 李养兵[1] 

机构地区：[1]滁州学院地理信息与旅游学院,安徽滁州239012

出　　处：《蚌埠学院学报》2015年第3期42-44,共3页Journal of Bengbu University

基　　金：滁州学院自然科学项目(2011kj021b)

摘　　要：以安徽省江淮分水岭易旱区为研究对象,应用SRTM数据和水文分析模型,提取了江淮分水岭脊线。选取研究区内4个和周边7个气象台站1960-2012年的降水资料,运用线性倾向估计、普通Kriging插值和等值线提取等方法,分析了安徽省江淮分水岭区域50余年降水量的时空分布规律和变化趋势。研究结果表明:53年来代际年均降水量1000 mm等降水量线北移明显,到2000年后分布于岭脊两侧的易旱区多处于年均降水量大于1000 mm的范围内;江淮分水岭易旱区内的降水量分布存在较大差异,在区域内进行农业规划和开发利用水源可依实际情况制定不同的方案,研究为区域内防御干旱、农业生产发展规划和合理开发利用水源提供依据。The Jianghuai watershed ridge was extracted by hydrological analysis model based on SRTM da- ta. Based on the precipitation data of 11 stations in the study area during 1960 -2012, the precipitation features through temporal and spatial distribution in the study area was analyzed by linear tendency esti- mate, ordinary Kriging model and extracting specified isoline. The study results showed：the boundary of 1000 mm rainfall base on annual mean value in a decade moving north obviously during 1960 -2012. Af- ter 2000, the most of area distributed on both sides of the ridge have located in the regional in which the boundary of 1000 mm rainfall base on annual mean value in a decade was more than 1000 mm. There is a big difference of the precipitation distribution in the semi arid area of Jianghuai watershed. So the Agri- cultural planning and the utilization of water could adopt different programs according to the actual situa- tion in the region.

关 键 词：SRTM数据 年降水量 时空变化 江淮分水岭易旱区 安徽省 

分 类 号：P467[天文地球—大气科学及气象学]