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The Life Research On The Soil And Erosion And Landscape Pattern In Xingxian

Posted on:2016-08-01Degree:MasterType:Thesis
Country:ChinaCandidate:Z YangFull Text:PDF
GTID:2180330470965394Subject:Agricultural extension
Abstract/Summary:PDF Full Text Request
This paper use the universal soil loss equation to calculate the soil erosion and soil conservation of Xing county in 2005 and 2010, simulated the soil erosion status in 2010 under the rainfall condition of 2005. Simulation found that rainfall is the main impact factors of soil conservation and soil erosion. Xing county whole belongs to moderate erosion in 2005, intensity of erosion in 2010. The simulation of soil erosion is slightly less than 2005. Analysis the soil erosion in 2005 and the simulation of soil erosion, found in 2010 Xing county fruitful soil conservation measures, the actual increased erosion is caused by rainfall erosion force increases. By FRAGSTATS software analyzes landscape classification map of soil erosion, and analyzed the different erosion intensity plaque accumulation and dispersion degree and plaques on the space shape change, etc. And analyses different erosion intensity distribution from the four aspects:villages and towns, slope, elevation and land use type, from the perspective of the villages and towns,2005,2005 and scene simulation Xing county spatial distribution characteristics of soil erosion intensity are the same in eastern E HU TAN township, Jiao Lou Shen township, east township regions such as the severe erosion in concentrated distribution, other types of erosion in other towns. Micro erosion and mild erosion area showed a trend of decrease with the increase of height erosion, moderate erosion, erosion intensity and strength area increased after decreased first, severe erosion increases with height. Different erosion types in different slope on the distribution, degree of micro erosion is concentrated in the 0 to 25°slope, mild, moderate and mild focused on 5-25° slope erosion, strength and severe erosion on 8-25° slope. Xing county soil erosion is mainly concentrated in the farmland, forest land and grass, residential area, water and unused land erosion area is very few, erosion is given priority to with micro degrees of erosion. On this basis, from different soil erosion for Xing county governance Angle to provide theoretical basis and decision-making reference.
Keywords/Search Tags:soil erosion, landscape pattern, time and space changes, RS, GIS
PDF Full Text Request
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