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Effects of Ecological Recovery Technique on Soil and Water Conservation for Degraded Urban River Bank and Its Stability Evaluation

Author: MengFanChao
Tutor: WangYuJie
School: Beijing Forestry University
Course: Soil and Water Conservation and Desertification Combating
Keywords: Revetment Soil and Water Conservation Effect Stability evaluation
CLC: S157
Type: Master's thesis
Year: 2011
Downloads: 118
Quote: 0
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Abstract


This paper combines the State Forestry Administration, the \vegetation revetment , arbor, shrub and grass mingling full range of natural materials, fabric pad tile revetment , geotextile flat bag revetment ) used in Changshou District, Chongqing Taohuaxi damage to the river banks , long-term monitoring of governance , compared revetment mode effect of soil and water conservation and the use of principal component analysis to evaluate the stability of ecological riparian technology . Its findings : angle analysis of environmental effects from the of each the revetment mode of soil , the most natural material fabric pad the tile revetment with a full range of ecological vegetation revetment damaged bank slope soil structure , soil fertility and resist shear performance improvement significant ; geotextile the flat bags revetment disabilities soil structure and fertility improvement effect is relatively poor , but the the ridge soil geotextile flat bag and gentle slopes role , its stable bank slope better . Near water district in terms of improve disabilities soil environment , soil environment better than distant water , and the texture of the soil surface structure , indicators of fertility characteristics and corrosion resistance better than the shallow soil on the whole , but the difference is not very significant . 30 indicators measured by selected using principal component analysis , stability evaluation , was found to affect bank stability indicator mainly reflects the destruction rate of soil erosion resistance of aggregates and water stable aggregates content . The composite index value can be seen , the natural material fabric mat revetment with a full range of vegetation ecological revetment stability was significantly better than the the artificial fabric flat bag revetment original ecological half-naked and . Therefore, be considered from the perspective of bank stability and vegetation growth characteristics , natural materials, fabric pad with vegetation revetment Taohuaxi riverine promotion is necessary to improve along the banks of the ecological effects of landscape effects have important guiding significance .

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CLC: > Agricultural Sciences > Agriculture as the foundation of science > Soil > Soil and Water Conservation
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