Research on the Spatiotemporal Dynamic Changes and Zoning Control of Ecological Risks in Rural Landscape of Water Network Area in Nanxing Lake Area,Suzhou
The southern region of Jiangsu is a leading area for urban development in China,with complex spatial characteristics of water networks and a certain degree of regional specificity.With the rapid growth of urbanization,the fragmentation of water net-works,rural landscape patterns,and increased ecological risks have become prominent.Based on landscape ecological risk assessment,proposing zoning control strategies is an effective method to maintain the stability of regional ecosystems.Taking the Nanxing Lake Area in Suzhou as an example,the study uses the landscape pattern index to construct a landscape ecological risk assessment model,analyzes the spatiotemporal distribution characteristics of landscape ecological risks in the study area from 2010 to 2020,and uses the CA-Markov model to simulate and predict the spatial distribution of landscape ecological risks in 2030,proposing spatial zoning control strategies under spatiotemporal dynamic changes.Research has shown that the land-scape ecological risk in the Nanxing Lake Area has risen from 2010 to 2020,with the proportion of high and high-risk areas increasing by 7.77％and 4.58％,respectively.The medium and low-risk areas have decreased and are mostly shifting toward higher-level risks.Among them,the risk level of areas with significant construction land expansion,such as Hehuadang and Fugang Village,has increased significantly.By 2030,the level of landscape ecological risk will continue to rise,and the range of high,little high,and medium risks will gradually expand.The proportion of area will increase by 3.3％,0.23％,and 2.16％,respectively,while the area of low and low risks will gradually decrease;compared to the current situation,the areas where the risk level increases under the 2030 scenario simulation are mainly concentrated in the inlaid distribution areas of construction land and water bodies such as Nanxing Lake and Fen Lake.Overlapping analysis of the spatial distribution of landscape ecolog-ical risks under land use simulation in 2020 and 2030,based on the identification results of current and potential risk areas,and proposing spatial zoning control strategies under spatiotemporal dynamic evolution,provides scientific guidance for achieving ecological protection and rational development of rural water networks in south Jiangsu.
landscape ecological risksspatiotemporal dynamicspartition controlwater network rural areasimulationNanxing Lake Area,Suzhou
NETL
NSTL
万方数据
