基于InVEST模型的淀山湖片区生境质量评估及景观优化研究

Assessment of Habitat Quality and Landscape Optimization in Dianshan Lake Area Based on the InVEST Model

随着城市化和农业规模化加剧,自然流域遭到破坏,生态环境面临严重威胁。基于开源软件InVEST模型对淀山湖片区2015年和2022年的生境质量进行评估。结果表明,城市化与农业扩张对生态系统造成了较大影响,导致淀山湖生境质量整体下降。针对不同的威胁因素与退化程度,总结出5种景观优化策略,并以柳河上游沿岸为例,进行景观设计改造。总体上说,采用的生态模型评估方法提供了淀山湖片区生境质量的时空分布信息,并以案例设计为决策者提供参考,有助于改进城市规划和发展,促进城市河湖沿线生境保护。

With the intensifi cation of urbanization and agricultural scale,natural watersheds have been damaged,and the ecological environ-ment faces serious threats.Therefore,the open-source software InVEST was used to assess the habitat quality in the Dianshan Lake area in 2015 and 2022.The results showed that urbanization and agricultural expansion had a signifi cant impact on the ecosystem,leading to an overall decline in habitat quality in Dianshan Lake.According to different threat factors and degradation degree,fi ve landscape optimization strategies are summarized and conducted landscape design renovation along the upstream coast of the Liu River as an example,In general,the adopted ecological model assessment method provides the spatial and temporal distribution information of habitat quality in Dianshan Lake area,and provides reference signifi cance for decision makers with case design,which is helpful to improve urban planning and development to improve habitat conservation along the urban rivers.