摘要
本文根据邯郸地区的大范围观测资料，对小麦的作物干旱指数（ＣＷＳＩ）和裸地的土壤干旱指数（ＳＷＳＩ）及其与土壤水分的关系进行了研究，并分析了ＣＷＳＩ和ＳＷＳＩ的影响因素和在旱情监测中的实用性。
rop water stress index(CWSI)for wheat and
soil water stress ind index(SWSI)for bare soil were determined based on the data observed for
canopy tempe-rature of wheat,surface temperature of bare soil, main meteorological factors
andsoil water content during 1990 and 1991 in Handan district, Hebei Province. Themain
cause influencing the values of CWSI and SWSI out of 0 1 range was thatthe soil water content
was out of the range which could be reflected by SWSI andCWSI and thus causing the Tc Ta
and Ts Ta too high or too low. The correlationsamong CWSI, SWSI and relative soil water
content were analyzed and drought gradesindices of the soil water with various thickness
layers were suggested. CWSI andSWSI could be applied in various regions for drought
monitoring, but the timelyobtaining of the information of drought would be influenced because
more data andparameters should be obtai ned.
出处
《土壤学报》
CAS
CSCD
北大核心
1995年第2期202-209,共8页
Acta Pedologica Sinica
关键词
作物
干旱指数
CWSI
土壤
SWSI
Crop water stress index(CWSI),Soil
water stress index(SWSI)
