Study On The Evolution Of Rural Agriculture Landscape Pattern And Its Ecosystem Service Value In The Suburb Of Cities

With the rapid progress of urbanization,the implementation of a series of policies such as new urbanization,new rural construction and beautiful countryside,the rural areas have been greatly affected,and the rural landscape has also undergone major changes.Based on the above background and applying the theory and method of landscape ecology,this paper takes the agricultural landscape of Huangpi District of Wuhan City as the research object,through remote sensing image data and on-site in-depth investigation,using GIS,ENVI and other software combined with relevant technical means to interpret The three phases of remote sensing images in 1999,2009 and 2019 analyzed and summarized the spatial distribution characteristics and spatial and temporal evolution of the agricultural landscape pattern in Huangpi,and on this basis,combined with the theory of ecological service value and the local agricultural data in Huangpi,discussed the agricultural landscape The impact and interaction of changes on the value of ecological services has certain reference significance for the policy formulation and related planning and design of agriculture and agricultural landscapes in the suburbs of the city.The paper obtained the following conclusions:(1)Taking the agricultural landscape in Huangpi District of Wuhan City as the research object,interpreting the remote sensing images of 1999,2009 and 2019,and analyzing the landscape pattern evolution characteristics of agricultural landscape in the two dimensions of time and space in the research area,the research results show:(1)The forest landscape in Huangpi District is concentrated in the northern mountain area,and the construction land is mostly concentrated in the Binhu Plain area near the urban area of Wuhan.The other parts of the landscape are mainly composed of agricultural land and construction land.(2)The area of agricultural land has continued to decline significantly from 1999 to 2019.Most of the transfer was for construction land and forest land.During 1999-2009,a large amount of agricultural land was transferred to construction land.By 2009-2019,agricultural land continued to transfer to construction land,But its main transfer destination has become woodland.(3)The landscape pattern index analysis through the fragstats software can be concluded that the construction land of Huangpi District in 2019 has the highest degree of fragmentation,followed by agricultural land,and the patch shape complexity of the two is also the highest,and the landscape diversity in terms of overall landscape The landscape types are relatively low,and the distribution of landscape types is relatively uniform;from 1999 to 2019,the shape of agricultural land patches tended to be complicated,and the distribution on the overall landscape also showed a small area and scattered distribution trend.The overall agricultural landscape was constantly divided and split.in the process of.(2)Using person correlation coefficient to study the impact of agricultural landscape pattern changes on the value of ecological services and the relationship between the two,it is concluded that the area of forest land and agricultural land has a greater impact on the value of ecological services than other types of landscape,and the landscape is broken Degree has a certain impact on the value of ecosystem services,and there is no obvious correlation between whether the landscape is evenly distributed and the value of ecosystem services.