期刊论文

中文

水土保持学报

1009-2242

2008

22

4

100-103,110

10.3321/j.issn:1009-2242.2008.04.022

国家科技部“十一五”科技支撑项目（2006BAD03A0501） 中央级公益性科研院所基本科研业务专项资金（200706）.

本校为第一机构

以济源试区坡耕地、苹果园、果农复合系统、退耕还林地、刺槐林地5个邻接农林模式为研究对象,用时域反射仪(TDR)测定坡面不同农林模式雨季前、雨季中和雨季后表层土壤(0-30 cm)含水量,分析表层土壤水分分布特征及其时空变异特征。结果表明:由于受不同坡位、不同植被类型的影响,土壤表层含水量从坡顶到坡底逐渐增加;雨季前后土壤表层含水量的半方差理论函数均呈球状模型,块金值变化并不明显,其值分别为0.25和0.30,独立间距分别为99.7 m和87.6 m,土壤水分具有强烈的空间自相关性,存在很好的分形特征,分形维数分别为1.71和1.74,变异均主要是由空间自相关部分引起。雨季中土壤表层含水量的半方差函数...

Measured the cover soil water content in soil layer 0--30 cm of different agroforestry landscape types in Ji-yuan wlth TDR, the landscape types including sloping cropland, apple orchard, apple-clover system,land under forest and grass changed from grain crop and black locust forest. Analyze the distribution characteristic and spatiotemporal variability of the cover soil water. The result showed that the soil water has renewed in a certain extent after a rain period in 1.5 m soil profile; the soil water content is gradually increased from the top of to the bottom of the slope under the affectio...