摘要
本文通过对甘肃省降水资料的具体分析,指出了在干旱、半干旱地区降水的主要特征,如暴雨的特殊性、固体降水与海拔关系、降水量与海拔关系、降水量与作物产量关系等,并对如何提高降水利用率,发展农业生产等问题进行了探讨。
The annual and regional precipitations in Gansu province greatly changeunder the influences of geographical position, characteristic topography andatmospheric circulation. In the arid and semiarid area, the monthlyprecipitation is uneven and unstable,and the precipitation intensity high,theeffective precipitation small. The rain concentrates july to september, andalways is torrential or shower.So the drought frequently occurs in sping andsummer. According to the analyses of the precipitation data in arid and semiaridarea of Gansu Province, the paper points out the main characteristic ofprecipitation in the area, such as characteristic torrential downpour, therelation between snow and elevation as well as rain and elevation, therelationship between annual precipitation and crop yield. The author alsodiscusses how to effectively use the precipitation, how to develop theagricultural production etc.
出处
《干旱区资源与环境》
CSCD
1991年第2期50-59,共10页
Journal of Arid Land Resources and Environment
关键词
甘肃
降水
干旱区
半干旱区
农业
Arid and Semiarid Area
Characteristic Precipitation
Agricultural Production
