Dynamic Change Of Land Use Landscape Pattern And Ecological Environment Assessment Based On Remote Sensing In Yingkou

This paper summarizes the domestic and foreign land use based on landscape pattern research,the domain landscape in Yingkou city in 2000,2005,2009 and 2014 four period remote sensing image data as the research foundation,in ENVI5.0,Arc Map10.0,Fragstats4.2 software support,the image data of Yingkou's interpretation and analysis.Based on the comparison of landscape pattern index in different periods,the landscape characteristics of Yingkou city in recent years were analyzed,and the change trend of landscape pattern in 2019 was predicted.According to the research results of Costanza,Xie et al evaluation of ecosystem services,combined with the city of Yingkou in recent years the status of land use,urban ecosystem service value calculation of Yingkou and analyze the value of profit and loss.So as to provide theoretical reference and scientific basis for the adjustment and layout of landscape structure in Yingkou.The main results of this paper are as follows:(1)The landscape pattern of Yingkou city changed significantly from 2000 to 2014,and the patch density of construction land,grassland and other land use showed a declining trend.The main factor of land use change is the acceleration of urbanization construction in Yingkou,the large number of people occupied farmland and grassland,resulting in a large reduction in the area(2)From the overall landscape pattern change point of view,from 2000 to 2014,the patch density of landscape pattern in Yingkou city decreased significantly,the distrib ution of landscape types gradually integrated from the original distribution and agglomeration fragmentation tends to be stable.Although the landscape shape index decreased slightly,but the value of the landscape was larger,and the landscape shapes still had high complexity.Shannon diversity and Shannon evenness index decreased,indicating that the regional landscape dominance is increasing,the landscape of each patch in the direction of unbalanced development.(3)From the transfer matrix of each period can be seen between the farmland and woodland into each other frequently,with construction area of farmland conversion to the grassland and other obvious transformation direction is mainly farmland and construction land in Yingkou C ity,that in this period are mainly urban construction and the pursuit of economic development,construction land occupied by a large number of other landscape area.(4)Using the Markov model to establish the initial probability matrix of the landscape area in 2000 to forecast the area of each landscape type in the year of 2005.By comparing the predicted and actual values in 2005,it is found that the error is controlled within 0.01%,which indicates that the simulation results are good.The prediction method is used to forecast the area of each landscape type in Yingkou in 2019.(5)According to the ecosystem service value per unit area from 2000 to 2019 the calculation method of ecosystem service value per unit area,the results show that the Yingkou city ecosystem service value decreased significantly after 2009.Analysis on the ecological service value of Yingkou city flows,such as to maintain or increase Yingkou city landscape ecosystem service value to stop the conversion process of forest land and water landscape,so as to achieve the restoration of ecological environment in Yingkou city to achieve the goal of sustainable development.