摘要
本文探讨了一个通过土壤有效水分含量来确定土地等级和土地生产力的方法。这个方法采用倍增参量形式来确定土壤有效水分。其变量包括潜水位、土层厚度、土壤质地、坡度和盐分。此项研究证明用这种方法获得的土地初级生产力与实测值比较一致。因此，我们可以在类似环境下用这种方法估测土地生产潜力。
This paper explores a method of estimating the relative available soil moisture(RAM) that supports plant growth.This is ased as a means to determine the land productive potential from the annual primary productivity a parcel of land can support.The method determines the RAM by using the multi-parametric fashion.The variable,include the ground-water table,soil depth,soil texture,slope and salinity.The primary productivity calculated by using these considerations gives reasonable agreement with the practically measured values.Therefore the estimates of the land productive potential in similar environments can be made by using the method.
出处
《自然资源学报》
CSSCI
CSCD
1996年第2期177-183,共7页
Journal of Natural Resources
基金
国家自然科学基金
关键词
土地生产潜力
土壤有效水分
植被组成
land productive potential,soil available moisture,vegetation composition
