摘要
以金沙江干热河谷6种人工林为例,采用TRIME-PICO-IPH TDR测定雨季(6-10月)土壤水分,每个样地设3个重复,分析不同人工林内的土壤水分变化特征。罗望子纯林土壤含水量稳定,变异系数小,且含水量较其他人工林高。随着深度的增加,不同人工林之间的土壤含水量差异逐渐变小。根据土壤对降雨的蓄积、利用情况,将0-100cm的土壤剖面分为水分剧烈变化层、弱利用层,草本植物水分利用层、土壤水分微调节层。
Six kinds of plantations in Yuanmou County of Yunnan Province,a typical dry-hot area in the valley of Jinsha River,were selected.Soil moisture was determined with TRIME-PICO-IPH TDR in rainy season（from June to October）.Each sample area was selected in triplicate to analysis the variety characteristics of the soil moisture.Soil moisture is vey stable and the variation coefficient is much less in the pure forest of tamarindus indica and its soil moisture content is higher than the others.With the increase of the soil depth,the soil moisture differences among the plantations diminish gradually.The soil profile at 0-100 cm was divided into 4 layers by saving and using the rainfall of soil,i.e.moisture dramatical-change layer,moisture weak-utilization layer,herbaceous plant moisture utilization layer and soil moisture slight-adjustment layer.
出处
《水土保持研究》
CSCD
北大核心
2011年第2期125-128,共4页
Research of Soil and Water Conservation
基金
国家"十一五"支撑计划项目(2006BAC01A11)
国家支撑项目(2008BAD98B00)
关键词
土壤含水量
变异系数
人工林
金沙江干热河谷
soil moisture
coefficient of variance
plantation
dry hot valley of Jinsha River
