Aiming at the key problem of the influence of land use evolution on landscape pattern and ecosystem service value in typical resource-based cities in Xinjiang.Based on the interpretation of four remote sensing image data of Karamay City from 1995 to 2021,this study analyzed the dynamic evolution of land use,calculated the changes of landscape pattern and ecosystem service value,and measured the correlation between them.Results showed:1)From 1995 to 2021,the area of various types in Karamay showed a trend of five increase and one decrease,among which the area of grassland,cultivated land,forest land,construction land and water area increased,and the area of unused land decreased.2)During the study period,the landscape fragmentation of landscape level in Karamay City showed an increasing state,the landscape distribution pattern changed from compact to discrete,and the landscape types tended to be diversified.There are certain similarities and differences in the evolution of landscape pattern index at the type level.3)From 1995 to 2021,the total value of ecosystem services in Karamay City showed an upward trend,from 1.462 51 billion yuan to 4.220 67 billion yuan,with a total increase of 27.581 6 billion yuan,an increase of 188.59%.Waters and cultivated land were the main contributors,and the contribution rates of the two in 2021 were 53.42%and 26.32%,respectively.4)The correlation degree between landscape level landscape index and total value of ecosystem services is higher than 0.5,and the two interact closely.There is a certain degree of consistency and difference between the landscape index and the correlation degree of ecosystem service value at the type level.The research results provide scientific basis and data reference for optimizing land use and ecological security in typical resource-based cities in Xinjiang.
关键词
景观格局/生态系统服务价值/灰色关联模型/克拉玛依市
Key words
Landscape pattern/ecosystem service value/grey correlation model/Karamay City
维普
万方数据