隔坡沟状梯田土壤水分变化规律探讨  

The Law of variation of soil water in Terraced And Trenched Field with Slope

作　　者：张金柱[1] 于宗周[1] 李保国[1] 栾景仁[1] 张丽娟[1] 

机构地区：[1]河北林学院

出　　处：《水土保持通报》1995年第2期58-63,共6页Bulletin of Soil and Water Conservation

摘　　要：采用定位观测与谐波分析方法研究了河北太行山低山片麻岩区坡地土壤水分变化规律及隔坡沟状梯田对土壤水分变化规律的影响。结果表明：土壤含水量的变化受降水和蒸散变化的影响，表现出明显的周期性变化规律。隔坡沟状梯田使土壤含水量序列均值增加，波幅减小，极值推迟，因而抗旱能力增强。此外，对隔坡沟状梯田改善土壤水分状况的机制进行了试验研究。The law of the variation of the soil water in low Taihang mountainous areas of gneiss ofHebei province as well as the effect of terraced and trenched field with slope on the law were studiedby means of fixlocation experemental observation and resonant wave analysis.The results showedthat the variation of soil water content showed obvious periodicities because of the effect of precipi-tation and evapotranspiration,etc.Terraced and trenched field with slope increased the average valueof the soil water content seqence,reduced variation,delayed maximum and minimum value and en-hanced drought resistance because of thick soil layer,high accumlation of runoff and retaining wa-ter.

关 键 词：隔坡沟状梯田 水土保持 土壤含水量 

分 类 号：S157.31[农业科学—土壤学]