摘要
土壤水是重要的生态水源和水文要素之一,它与黄土区生态环境建设关系密切。水土保持措施是人类对土壤流失区下垫面性质的综合改造,这种改造会影响土壤水分的静态分布和动态过程。在黄土高原地区,水土保持坡面工程措施能有效地提高土壤含水量。人工林草植被使土壤含水量降低,甚至造成人为干层。天然植被与人工植被对土壤含水量的影响相反,这是黄土高原植被营造及规划中应关注的问题。
Soil water is one of the most important ecological water resources and many hydrological elements,the relationship between soil water content and the eco agricultural construction in the loess region is very close. Soil and water conservation is that human integrally transforms the ground layer characteristics, and this transformation has impacted on the static distribution and dynamic progress of the soil water content.In the loess plateau region, the soil water content was improved due to the engineering measures of soil and water conservation on the hillslope. Many kinds of the artificial vegetation for pasture and forestry decreased the soil water content,and even resulted in the soil dry layer, to contrast with the artificial vegetation, the natural vegetation did not result in degradation of soil water content,even it increases soil moisture. It is worth to research a problem in the eco agricultural construction in the Loess Plateau.
基金
国家"九五"科技攻关项目!(96 - 004-05 -12)
