摘要： 土壤水分含量对土壤物理性质和植被生长状态有重要影响,但土壤水分在时间上具有一定的变异性。大规模开采地下水导致地下水位急剧下降,包气带不断增厚,使土壤水分的储存、运移和转化发生了变化,影响了土壤水的动态变化特征。本研究利用连续多年的土壤水分观测数据,分析了太行山前包气带土壤水分动态变化特征,结果表明:土壤含水量受丰水年枯水年影响存在年际差异,根据不同季节土壤水分的动态特点,可将其划分为三个时期,即土壤水分消耗期土壤水分累积期和土壤水分相对稳定期。在垂向上,土壤含水量从上层向下逐渐增大,土壤水分变异程度随土壤深度的增加而减弱。

关键词: 包气带, 土壤水分, 动态规律

Abstract: The soil water content is important for physical character of soil and vegetal state,but it has dynamic change.Following the increased exploitation,the water level drops and forms the hugely thick aeration zone,it changed the deposited and translation of the soil water content,and the dynamic characteristics.Based on the results of long term and position research,the dynamic change of soil water content in Taihang Mountain-piedmont Plain with the condition of aeration zone incrassation was studied.Some results are as follows: Soil water content changes with precipitation in different year;Season dynamic can be divided into three stages: accumulating,consuming and stable;Soil water content increases with the increase of soil depth.The variation coefficients decrease with increasing soil depth.

Key words: Aeration zone, Soil water, Dynamic

中图分类号: 

• S152.7