期刊论文

中文

山地学报

1008-2786

2012

30

2

147-155

10.16089/j.cnki.1008-2786.2012.02.001

国家自然科学基金项目（41001125） 湖北省自然科学基金（2010CDB01205） 武汉市晨光计划（201150431112）

本校为第一机构

降雨过程中森林土壤大孔隙内优先流的发生,是森林植被调蓄径流和保持水土的主要方式。利用染色示踪法,对三峡库区宜昌大老岭-邓村地区不同垂直带内森林土壤大孔隙特征进行了实验研究。结果表明,山地植被-土壤类型的梯度变化使不同垂直带内土壤大孔隙数量差异显著,在土壤垂直剖面内呈现不同分布模式。亚高山阔叶林覆盖的山地棕壤下,土壤剖面染色面积比达62.3%,染色区域主要集中在根系发达的腐殖质层,染料下渗深度较浅。低山针叶林黄壤剖面染色比例低于亚高山阔叶林棕壤,但染料下渗深度较深可达69.5 cm,腐殖质层、淋溶淀积层和母质层间染色比例无显著差异。中山灌丛幼林黄棕壤剖面染色比例和染料下...

Preferential flow in soil macropore was principle formation of forest function in runoff adjustment and soil and water conservation.Through dye tracing and image analysis,we studied soil macropore characteristics of different altitudinal zones in Three Gorges Reservoir area from Dalaoling to Dengcun of Yichang City.The results indicated that the number of soil macropore varied greatly at different altitudinal zones,and the distribution of dyed area in soil profile also show different modes,which were caused by the vertical gradient changes of forest vegetation and soil type.Under the mountain ...