期刊论文

Influence of vegetation coverage and topographic position on soil hydrological function in the hillslope of the three gorges area

Liu, M.

中文

生态学报

1000-0933

2019

39

13

4844-4854

10.5846/stxb201812112706

41771261:国家自然科学基金 41601215:国家自然科学基金 2015CFA141:湖北省自然科学基金重点项目

本校为第一机构

土壤层下渗和贮蓄水分的水文功能是森林保持水土、涵养水源的基础.以三峡山地大老岭林区为研究区,采集常绿林、落叶林和草地覆盖下不同坡位的原状土样,测定其饱和导水率和水分特征曲线,分析植被类型和坡位对土壤水分参数和库容的影响.结果 表明:常绿林地的入渗性能最好,饱和导水率为7.80-322.81 cm/d,大于落叶林地(0.33-137.03 cm/d)和草地(0.84-115.80 cm/d);坡位间差异表现为上坡高于下坡.不同样地的饱和含水量差异较小,但毛管持水量和田间持水量差异明显,草地最大,为20.77％-50.39％;不同坡位比较表现为下坡高于上坡.不同样地土壤水库容量差异较大,由田间持水量得到的库容量占总库容量的百分...

Rainfall infiltration through soil profile forms a key process of water cycle in the critical zone of terrestrial ecosystem. The hydrological function of soil pedons on transporting and accumulating rainwater constructs the foundation of forestland on soil and water conservation in mountainous area. To study impacts of vegetation cover and topographic position on soil hydrologic features of mountain area, three separated hillslopes covered with different vegetation in a typical catchment of the Dalaoling Forest Region were selected as the study...