Land Use Landscape Patterns And Influencing Factors In Changhe Watershed Of Jincheng

Land use landscape pattern has significant spatial heterogeneity,which reflects the difference in overall land use characteristics under different natural conditions and human activities.Studying the characteristics of land-use patterns and its influencing factors and mechanisms are of great significance for the coordinated and sustainable use of regional land resources.However,the current related research pays more attention to the characteristics of land use differentiation and its evolutionary process from a single element of the natural environment or solely from the human-driven factors.The paper selected Changhe watershed located in Jincheng,Shanxi province as research area and conducted the case study.Based on the analysis of regional land-use distribution characteristics,revealing the characteristics of regional land-use landscape patterns,and spatial autocorrelation analysis methods are used to further reveal regional land-use characteristics.Finally using the grey system correlation analysis to quantitatively study the natural and human factors that affect the distribution of land use patterns in the Changhe watershed,and to determine the degree of influence and the impact mechanism of each factor on the land use pattern.The main research contents were as follows:(1)Using GIS technology and gridded spatial analysis methods to analyze the distribution characteristics of land use in Changhe watershed,include quantitative characteristics and spatial distribution characteristics.(2)Using the theory and method of landscape ecology,analyzing the landscape pattern of land use in Changhe watershed,and using the spatial autocorrelation analysis method to further analyz the spatial pattern of land use in Changhe watershed.(3)The impact factors are gridded,and the grey system correlation analysis method is used to quantitatively study the natural and human factors that affect the distribution of land use patterns in Changhe watershed.determining the correlation degree and correlation coefficient between each factor and land use pattern,and finally defining the influence degree and influence mechanism of each factor on land use pattern.The paper reached the following conclusions:(1)The size of the grid area in Changhe watershed is: cultivated land> grassland> land for construction> woodland> water area;The vertical distribution belts of various land types from low to high are as follows: water area,construction land,cultivated land,grassland,woodland;In addition to the forest land,there are four types of land landscape gravity centers with agglomeration.(2)The distribution of landscape types in the river basin is more balanced,and the landscape structure is more complex;landscape fragmentation is relatively high,landscape patches are small,shape is complex,and the degree of aggregation is weak.(3)The spatial distribution of land use types in the Changhe watershed has obvious agglomeration characteristics,The spatial distribution of cultivated land and grassland shows a corresponding relationship between high-value and low-value areas,woodland agglomerations interspersed in grassland gathering areas(4)On the whole,the various landscapes in the Changhe watershed are mainly affected by natural environmental factors such as effective soil thickness,slope,and mean elevation,as well as human and environmental factors such as population density and distance from residential areas.In the process of land comprehensive improvement and utilization in the future,the role of these natural humanities factors in the spatial pattern of land use landscape in the region should be fully considered,to optimize the layout of land use.