Dynamic changes of landscape pattern and evaluation of ecological service function in Xiongan New Area from 2013 to 2022
Deeply understanding and analyzing the spatiotemporal characteristics and ecologi-cal development trends of the landscape pattern in Xiongan New Area was of great signifi-cance for promoting the green and high-quality development of Xiongan New Area.Using typical remote sensing image data of 4 periods from 2013 to 2022,combined with Google Earth images,the land use classification map of Xiongan New Area was obtained by support vector machine classification and visual interpretation method,and GIS technology and In-VEST model analysis and other methods were comprehensively applied to analyze and evalu-ate the characteristics of landscape pattern changes and ecological quality in Xiongan New Area in the past ten years.The results showed that:(l)During the period of 2013 to 2022,construction land,open water bodies and forest land continued to grow,of which forest land showed a rapid growth trend after 2017,the proportion of the total area of Xiongan New Ar-ea grew from 10.75％to 31.79％,cultivated land shrunk rapidly due to the transfer out of the more area,which was mainly transferred to forest land,open water bodies and construc-tion land,and the area of Baiyangdian wetland increased.(2)Landscape fragmentation of open water bodies,aquatic vegetation,and cultivated land was increasing year by year,and spatial connectivity of forest land continued to improve.The landscape shape index increased in Xiongan New Area,in which the landscape richness was the greatest in 2022,the connec-tivity of dominant patch types in the landscape increased,and the large proportion of patches increased.(3)From 2013 to 2022,the carbon stock in the study area increased by 60.59 X 106 MgC,the area of excellent type of habitat area and the area of poor habitat quality showed an upward trend,and the area of moderate habitat quality decreased by 33.66％.In the past 10 years,especially in the past 5 years,the landscape pattern of Xiongan New Area had undergone significant changes,mainly caused by land use changes.The increase in ad-vantageous patches such as forest land,open water bodies,and aquatic vegetation had im-proved the ecological quality of the research area.At the same time,attention should also be paid to the continuous expansion of areas with poor habitat quality,and special attention should be paid to the intersection of arable land,rural construction land,and urban areas,the construction of ecological nodes and the enhancement of their ecological functions at the intersection of transportation roads and ecological sources.
landscape patternecosystem service functionland useInVEST modelXiongan New Area
NETL
NSTL
万方数据
