期刊
JOURNAL OF CENTRAL SOUTH UNIVERSITY
卷 23, 期 8, 页码 2101-2109出版社
JOURNAL OF CENTRAL SOUTH UNIV TECHNOLOGY
DOI: 10.1007/s11771-016-3266-y
关键词
landslides; macropores; plant; root systems; organic matter; stone
资金
- National Natural Science Foundation of China-Yunan Joint Fund [U1502232]
- Natural Science Foundation of Kunming University of Science and Technology, China [KKSY201406009]
- Natural Science Foundation of Yunnan Province, China [2014FD007]
In order to investigate the differences of macropores vertical distribution under different surface plants, and to assess the influences of root systems, organic matter and texture on macropore flow paths, two dye tracer infiltration experiments were performed in slopes under two different plants (Carnpylotropis polyantha (Franch.) Schindl vs. Cynodon dactylon (Linn.) Pers). Dye tracer infiltration experiments with field observations and measurements of soil properties were combined. Results show that the discrepancy in macropores distribution between two slopes under different plants is significant. Root systems have significant effects on macropore flow paths distribution and the effect become more pronounced as the diameter of roots become larger. Organic matter and stone are important factors to affect macropores distribution. Root-soil interface, inter-aggregate macropore and stone-soil interface are important macropore flow paths in well vegetated slopes.
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