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[1]ZHOU Mingtao,GAO Jiazhen,ZHANG Shoude,et al.Impact of Different Planting Patterns of Magnolia multiflora and Cynodon dactylon on the Antierodibility of Yellow Brown Earth in Three Gorges Area[J].Research of Soil and Water Conservation,2017,24(01):7-11.

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Impact of Different Planting Patterns of Magnolia multiflora and Cynodon dactylon on the Antierodibility of Yellow Brown Earth in Three Gorges Area

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 24 Number of periods: 2017 01 Page number: 7-11 Column: Public date: 2017-02-28

Title:: Impact of Different Planting Patterns of Magnolia multiflora and Cynodon dactylon on the Antierodibility of Yellow Brown Earth in Three Gorges Area

Author(s):: ZHOU Mingtao^1,2, GAO Jiazhen^1,2, ZHANG Shoude², QIN Jiankun^1,2, XU Wennian^1,2; 1. Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University, Yichang, Hubei 443002, China;
2. College of Civil Engineering & Architecture, China Three Gorges University, Yichang, Hubei 443002, China

Keywords:: yellow brown earth; hydrostatic disintegration; antierodibility; principal component analysis

CLC:: S157

DOI:: -

Abstract:: In order to analyze the soil antierodibility characteristics of the yellow brown earth in the planting pattern of Magnolia multiflora plus Cynodon dactylon (Linn.) Pers. in Three Gorges Area, hydrostatic disintegration test has been conducted to investigate different soil antierodibility indexes. The results are as follows. First of all, in the process of hydrostatic disintegration, soil disintegration rate decreases in the order: bare land > Magnolia multiflora > Cynodon dactylon (Linn.) Pers > mixture sowing. Compared with the bare land, the disintegration rate of the soil, which included roots, has greatly slowed down, while mixture sowing of that was the slowest. The density of the root system were significantly linearly correlated with the antierodibility enhancement. Secondly, compared with the control sample, soil water stable aggregate contents, mean weight diameters, organic matter contents, agglomeration status, reunion and soil clay contents were significantly improved under different planting modes. What’s more, structural damage rate and dispersion ratio decreased significantly. Thirdly, principal component analysis showed that the indexes of wet sieve aggregate (>0.25 mm) content, structural damage rate, agglomeration status, dispersion rate and organic matter could better measure erodibility resistance of yellow brown earth under vegetation restoration.

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