苏南水网地区水域景观格局演变特征研究——以吴江区为例

Evolution characteristics of water landscape pattern in southern Jiangsu Province:A case study of Wujiang District

研究通过定量揭示苏南水网地区水域景观格局时空演变特征,为进一步优化景观格局和保护苏南水网地区生态环境提供依据。以苏州市吴江区为研究对象,1990、2000、2010和2020年土地利用数据为数据源,采用景观动态度、转移矩阵和景观格局指数法分析水网地区水域景观格局变化。结果表明:1990—2000年景观破碎化程度较强,景观之间分散程度增大,连通性逐渐减弱;2000—2020年破碎化程度有所减缓,整体趋向于整合,连通性有所增强。景观复杂性在1990—2020年持续增强。研究成果可为苏南水网地区的生态安全格局构建以及维持水域景观完整性与安全性提供参考。

This study quantitatively revealed the spatio-temporal evolution characteristics of water landscape pattern in the water network area of southern Jiangsu,so as to provide a basis for further optimizing landscape pattern and protecting the ecological environment in the area.Taking Wujiang District of Suzhou City as the research object and the land use data of 1990,2000,2010 and 2020 as the data source,the landscape dynamic attitude,transfer matrix and landscape pattern index method were used to analyze the changes of water landscape pattern in the water network area.The results showed that from 1990 to 2000,the degree of landscape fragmentation was strong,the degree of dispersion between landscapes increased,and the connectivity gradually weakened.From 2000 to 2020,the degree of fragmentation slowed down,while the overall trend was toward integration and connectivity increased.Landscape complexity continued to increase from 1990 to 2020.The research results can provide reference for the construction of ecological security pattern and the maintenance of water landscape integrity and security in the water network area of southern Jiangsu.