%0 Journal Article
%T The Analysis of Haihe River Basin Hydrometeorological Spatio-temporal Variability Based on GIS and Information Difference Measure<br>基于GIS和差异信息测度的海河流域水文气象要素时空变异性分析
%A XIA Jun
%A OU Chun-ping
%A G H HUANG
%A WANG Zhong-gen
%A <br>夏军
%A 欧春平
%A G．H．HUANG
%A 王中根
%J 自然资源学报
%D 2007
%I 
%X The spatio-temporal variability analysis of hydrometeorological factors are crucial for further understanding hydrological process and hydrological/meteorological modelling.Traditional temporal variability was quantitatively described using Coefficient of Variation based on statistics.In this paper,we combined information entropy theory with GIS spatial analysis technology to analyze the spatio-temporal variability of annual precipitation,evaporation and air temperature.A new spatio-temporal variability analysis method which is based on the differential information entropy relatively estimates is also presented.This study was conducted using 31 gauge stations precipitation,evaporation and air temperature data of Haihe river basin during the period from 1960 to 2001.The results intuitionisticly expressed the hydrologic and meteorological spatio-temporal variability rule of Haihe river basin,which lays solid foundation for further understanding the changes of water cycle of the study area.It is concluded that the spatiotemporal variability of precipitation and evaporation of the Haihe River Basin is relatively great and the spatio-temporal variability of temperature is relative small.
%K GIS<br>时空变异
%K 差异信息测度
%K 信息熵
%K 水文气象
%K 海河流域
%K 变异系数
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=4DCB9A3AF3395AF0101DE5302EF3C300&aid=1CE26C07E15DE5BE&yid=A732AF04DDA03BB3&vid=BC12EA701C895178&iid=38B194292C032A66&sid=0493D643315CD829&eid=FD59017DCD73904D&journal_id=1000-3037&journal_name=自然资源学报&referenced_num=0&reference_num=15