Analysis Of Land Use Landscape Pattern Change And Ecosystem Service Value In Heshun County

Heshun County,Shanxi Province is a typical mountainous area with fragile ecological environment.With the implementation of the ecological construction project.The land use landscape pattern and ecological environment of Heshun County have changed.This paper selects the land use type map of Heshun County in three periods,analyzes the changes of land use,landscape pattern and ecosystem service value in the area,and provides a basis for rational land use in order to grasp the land change in time.for the results showed:1.From 2004 to 2014,land use in Heshun County has great changes.Compared with 2004-2009,the land use change is significant,and the land use change is relatively stable in 2009-2014.During the study period,forest land,grassland,cultivated land,rural-urban construction land?industrial and mining land and facilities agricultural land showed a growing trend,and the area of grassland increased the fastest.unused land is the most varied of all land types,accounting for 62.29%of the total transferred area.From 2004 to 2014,the cultivated land and rural-urban construction land has a net transfer,which shows that the town is gradually developing.From the Land exploitation and utilization index in Heshun County from 2004 to 2014 was 215.04,showing an upward trend.It shows that the Land exploitation and utilization in Heshun County is relatively large and growing.2.Analysis of changes in the landscape pattern of Heshun County.(1)forest land is the dominant landscape type in Heshun County.The area and number of landscape patches differ greatly,and heterogeneity is large.The total number of plaques showed a downward trend between 2004 and 2014,indicating that the heterogeneity of the entire landscape is gradually decreasing.(2)The fragmentation of forest land and grassland is increasing,and the plaque tends to be irregular and relatively discrete.The distribution of cultivated land,unused land,mining land,urban and rural-urban construction land and garden land tends to concentrate,and the fragmentation is decreasing.(3)the contacg showed an upward trend.indicating that the entire landscape of Heshun County has good connectivity and the fragmentation of the landscape is decreasing.(4)From the shape index,we can see that the shape of grassland is the most complex,followed by cultivated land,the shape of unused land becomes more regular and the edges become simpler.Overall,the shape index of Heshun County has an obvious upward trend from 2004 to 2014.It shows that the landscape type is influenced by human activities,and the shape is changing constantly,and the shape tends to be complex.(5)The average nearest neighbor distance of cultivated land,forest land,grassland,water area and water use land,rural-urban construction land showed a decreasing trend,indicating that these landscape patches gradually formed agglomeration distribution.(6)The Shannon diversity in Heshun County decreased slightly during the past 10 years,indicates that the heterogeneity of the entire landscape is decreasing during the study period.3.Between 2004 and 2009,the value of ecosystem services in Heshun County showed a significant growth trend,while the value of ecosystem services declined slightly between 2009 and 2014.However,as a whole,the value of ecosystem services in Heshun County has generally shown an increasing trend,increasing by 4,287.753x 105 yuan,with a rate of change of 24.291%.From 2004 to 2014,the individual ecological system service value showed an increasing trend.The largest amount of soil formation(1.209×105 yuan),the rate of change was 37.787%.