Grey Relation Analysis on Restoration Effects of Different Governance Models in Intensity Soil Erosion Area of Changting County

doi:10.11924/j.issn.1000-6850.2013-2189

Abstract

Abstract: In order to select an ideal biological governance model in intensity soil erosion area of Changting County and popularize the vegetation restoration model in southern China, the biological community of 4 different governance models in intensity soil erosion area of Changting County was investigated and the soil physical and chemical properties were determined. The restoration effects of 4 different governance models were evaluated by the grey relation analysis method. The result showed that: restoration effects of four governance models were better than the control treatment which improve soil structure, increase soil fertilizer and water holding capacity, increase the content of organic matter and nutrient, rich vegetation species. The restoration effects of 4 different governance models were in the grey relation sequence of the model of mixed trees, shrubs and herbs (0.934)＞the model of enclosure after planting economic forest (0.794)＞the model of mixed shrubs and herbs (0.487)＞the model of planting shrubs (0.484)＞CK (0.337). The governance models of enclosure after planting economic tree species and the model of mixed trees, shrubs and herbs were optimization with high plant species richness and biodiversity index, and soil properties improving which were popularization models in intensity soil erosion area of southern China.

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