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《Subtropical Soil and Water Conservation》 2017-04
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Soil Mechanical Composition under Different Vegetation Coverage in the Collapsing Areas of Changting County,Fujian Province

Xie Yanmin;Soil Conservation State of Changting County;  
As the typical type of severe erosion in the red soil erosion areas of South China,the collapsing is the difficult point in the ecological restoration and reconstruction in this area. There are many matured collapsing in the soil erosion areas of Changting County. It was selected three typical types of collapsing with different vegetation coverage( 2%,20% and 95%) in the yellow mud collapsing groups,Zhuotian Township of Changting County for study the textual characteristics of the collapsing soils with different vegetation coverage. The results show that,mechanical composition of the collapsing soil mainly includes the sand,lower content of powder and clay with the obvious coarse ossification. Followed with the gradual increase of the vegetation coverage,the soil powder and clay increase in the collapsing soil. Along the water slope,collapse wall,collapse body and channel exit,the sand in the collapse soil appears the increase trend.
【Fund】: 国家科技支撑计划“南方红壤水土流失治理技术及示范”(2013BAC08B03)
【CateGory Index】: S157
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