The Coupling Relationship Between Land Use Change And Soil Erosion Of The North Coal-buried Villages In The Hilly Region

With the increase of human activities,the influence of human beings on the global ecological environment continues to increase,and the contradictions between population,resources,and the environment are becoming more acute.The unreasonable development and utilization of land resources by humans leads to changes in the types of land use.This seriously interferes with the material circulation and energy flow of the ecosystem,which results in changes in the erosion cycle of the natural world and accelerates the process of soil erosion.Soil erosion also affects the land.The use of spatial structures and shape features has resulted in a decline in the area and quality of land,leading to the loss of land resources,which has led to a series of environmental effects.The earth-rock area in the north is one of the areas with the most severe water and soil erosion in China.Severe soil erosion not only exacerbates the deterioration of the ecological environment in the area,but also reduces the quality of the cultivated land due to soil erosion,seriously affecting the local economic development and people's living standards.improve.The causes of serious soil erosion in the area are not only the local natural factors,but also the unreasonable land use in the area is an important factor causing this phenomenon.Therefore,it is of great significance to carry out research on the relationship between land use and soil erosion to protect the local fragile ecological environment and guide people to use land rationally.This paper interprets Landsat remote sensing images through object-oriented classification methods to obtain land use type data in the region.Based on the dynamic changes of landscape pattern index and land use space as the basic indicators for evaluating land use change,the land of the study area during 2005-2015 is analyzed.Using the process of change;at the same time,based on GIS and RS techniques,use the modified RUSLE model to create a vector map of soil erosion in the study area and estimate the amount of soil erosion;finally,change from land use landscape pattern and land use.Type shift angle analysis explores the response relationship between soil erosion and land use type change,and draw the following conclusions:1.Through the supervised classification of remote sensing images in 2005,2010 and 2015,it can be known that the types of land use in the Changhe River Basin are generally dominated by cultivated land,and grassland and construction land are complementary.In terms of land-use dynamics,the interannual rate of change of land use types is ranked as follows: construction land> cultivated land> forest land> grassland> water area.2.Based on the soil erosion data obtained from the general soil loss equation,the distribution pattern of soil erosion in the Changjiang River Basin from 2005 to 2015 is basically the same.The intensity of soil erosion is dominated by mild to moderate erosion,and other soil erosion levels account for The proportion is less.In terms of structural changes in soil erosion intensity grades,various soil erosion intensity grades in the Changjiang River Basin have been transferred to different degrees from 2005 to 2015.The total transfer area totaled approximately 3,882.07 hm2,accounting for approximately 34.76% of the total area of the study area.The rankings were: Moderate> Mild> Intensity> Intensity> Moderate> Dramatic.The sorting areas were: Mild> Moderate> Mild> Intensity> Extreme Strength> Dramatic.Overall,soil erosion in Changhe River Basin in 2005-2010 showed an increasing trend.3.Through the coupling analysis of land use data and soil erosion data from 2005 to 2015 in the Changjiang River Basin,we can see that in terms of dynamic response changes,the comprehensive degree of land use dynamics in Changhe River Basin is positively correlated with the change in soil erosion modulus,and the correlation between the two.The coefficient was 0.619,reaching a significant level of correlation of ?<0.001.Specifically,with the increase in plaque density in the study area,the fragmentation of the overall landscape patch and the enhancement of landscape heterogeneity will increase the erosion intensity in the study area;with the landscape space in the study area With increased connectivity and landscape diversity,the intensity of soil erosion in the study area will be reduced to some extent.It can be seen that increasing the degree of landscape aggregation,increasing landscape diversity,reducing landscape dominance to disperse soil erosion and reducing linkage effects can effectively control soil erosion.