Study On The Changes Of Human Activity Intensity And Land Use Landscape Pattern In Yuncheng Cit

Since the Industrial Revolution,with the rapid progress of social economy and scientific and technological level,great changes have taken place on the earth’s land surface,among which the most significant is the relationship between "man" and "earth".With the continuous improvement of human science and technology level and the continuous development of human economy,the need of human activities for natural environment is also increasing,followed by natural environment,ecology,natural resources and other problems,these problems restrict the pace of human towards a better life.Therefore,by studying the intensity of human activities and the change of land use landscape pattern in Yuncheng city,this paper makes clear the direction of the coordinated development of people and land in Yuncheng City,which is of great significance for the coordinated and sustainable development of the region.Based on the land use data of Yuncheng City in 1990,2000,2010 and 2018,as well as the corresponding social and economic data and natural environment data,this paper uses the land surface human activity intensity calculation model to represent the human activity intensity of Yuncheng City,and studies and analyzes the temporal and spatial changes of land use and human activity intensity of Yuncheng City and its influencing factors.The influence of human activities on landscape pattern was discussed through the relationship between human activity intensity and land use landscape pattern.Finally,the change trends of land use,human activity intensity and landscape pattern of land use in urban areas in 2030 are predicted.The main conclusions of this paper are as follows:(1)The changes of various land use types in Yuncheng City were relatively stable from 1990 to 2018.The arable land area decreased the most and the construction land area increased the most.The comprehensive dynamic attitude of land use was 0.11;The comprehensive index of land use degree in Yuncheng City was271.63 in 1990 and 274.28 in 2018.(2)The equivalent area of construction land and the intensity of human activities increased steadily from 1990 to 2018,and the growth rate showed an accelerated trend.The equivalent area of construction land increased by 290.38 km2 from 1990 to2018,and the intensity of human activities increased by 2.05% from 1990 to 2018.There are relatively large differences in the intensity of human activities among districts,cities and counties,and the differences are constantly expanding,showing the overall spatial pattern of high in the northwest and low in the southeast.Among various influencing factors,slope,traffic,population density and economic factors have great influence on the intensity of human activities.(3)The landscape pattern of land use was different in different human activity intensities.At the type level,the patch number of construction land is larger than that of other land use types.The proportion of cultivated land patch is the largest,which is obviously larger than that of other land use types.The maximum patch index of cultivated land was greater than that of other land use types.At the landscape level:with the increase of human activity intensity,landscape fragmentation showed a decreasing trend.The landscape diversity increased first,then decreased and then increased.Landscape connectivity shows an increasing trend.(4)The CA-Markov model was used to simulate and predict the land use change and human activity intensity in Yuncheng City in 2030.Compared with 2018,the land use type change in Yuncheng City in 2030 mainly focuses on the expansion of construction land,resulting in a large area of arable land reduction.Compared with2018,the equivalent area of construction land in 2030 increased by 708.69 km2,and the intensity of human activities increased by 5.01%.In 2030,land use landscape fragmentation was deepened,landscape diversity increased,and landscape aggregation decreased.