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.
XIA Jun1, OU Chun-ping1, 2, G. H. HUANG3, WANG Zhong-gen1
. The Analysis of Haihe River Basin Hydrometeorological
Spatio-tempor al Var iability Based on GIS
and Information Differ ence Measur e[J]. JOURNAL OF NATURAL RESOURCES, 2007
, 22(3)
: 409
-414
.
DOI: 10.11849/zrzyxb.2007.03.010
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