The Palmer Drought Severity Model is an important model to estimate the severity of drought.After being introduced into China in the 20th century, a series of corrections have been made by An Shunqing, etc.This method is used to the operation by the data from single site.We averaged the data of single site and then integrated them.We constructed the model with seven typical sites of Liaohe basin in Liaoning.And we used the data gained from other 23 stations from the Haihe-Luanhe River basin, the Huaihe River basin, the Huanghe River basin and the Changjiang River basin as basic data and relevant data to obtain the weighting coefficient.And we use the Synthetical Water Equilibrium Model replace the former one.After the corroboration, the result accords with the fact, and be meaningful to the research of regional drought.
ZHANG Wei-dong, SHI Lin
. Modification of Palmer Drought Severity Index of Regional Drought[J]. SCIENTIA GEOGRAPHICA SINICA, 2011
, 31(2)
: 153
-158
.
DOI: 10.13249/j.cnki.sgs.2011.02.153
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