面降水量在确定河流干支关系中的应用  

Application of Areal Precipitation in Determination of Streams Relationship

作　　者：董闯[1] 刘九夫[1] 谢自银[1] 王欢[1] 

机构地区：[1]南京水利科学研究院,江苏南京210029

出　　处：《水电能源科学》2013年第5期5-8,共4页Water Resources and Power

基　　金：全国河湖基本情况普查技术支撑基金资助项目(GQ510003)

摘　　要：以洞庭湖流域为例,利用数字化的多年平均年降水深等值线图资料,采用自然邻点插值法快速准确地实现了数字等值线图栅格化,将降水栅格化结果与流域边界数据进行叠置和统计分析,从而计算出流域面降水量,并结合全国河流湖泊基本情况普查中确定河流干支关系的方法,对湘江干支关系进行了分析,验证了该方法的可行性和有效性。Taking Dongting Lake Basin as an example, natural neighbor interpolation is used to get grid average annu al precipitation data rapidly and accurately from the areal average annual precipitation digital contour map. And then, the basin average precipitation, computed by overlay and statistical analysis between the grid data and the basin boundary, is applied to determine the relationship between the main streams and the branches of Xiangjiang River based on the method in the national census for rivers and lakes. The results show that the proposed method is feasible and effective.

关 键 词：面降水量 自然邻点插值法 降水等值线图 河湖普查 

分 类 号：TV125[水利工程—水文学及水资源]