基于InVEST模型的无锡市生境质量变化研究  

Changing features of habitat quality in Wuxi City based on InVEST model

作　　者：赵晓雨 王益明 何旭[1] 刘小燕 张佳敏 邓懿 冯耀 初磊[1] 张增信[1,2] ZHAO Xiaoyu;WANG Yiming;HE Xu;LIU Xiaoyan;ZHANG Jiamin;DENG Yi;FENG Yao;CHU Lei;ZHANG Zengxin(Co-Innovation Center for Sustainable Forestry in Southern China,College of Forestry and Grassland,College of Soil and Water Conservation,Nanjing Forestry University,Nanjing 210037,China;State Key Laboratory of Hydrology-Water Resources and Hydraulics Engineering,College of Hydrology and Water Resources,Hohai University,Nanjing 210098,China;Wuxi Municipal Bureau of Natural Resources and Planning,Wuxi 214023,China)

机构地区：[1]南京林业大学林草学院、水土保持学院,南方现代林业协同创新中心,江苏南京210037 [2]河海大学水文水资源学院,水文水资源与水利工程国家重点实验室,江苏南京210098 [3]无锡市自然资源和规划局,江苏无锡214023

出　　处：《南京林业大学学报（自然科学版）》2024年第5期165-172,共8页Journal of Nanjing Forestry University：Natural Sciences Edition

基　　金：国家重点研发计划(2019YFC0409004);国家自然科学基金项目(41971025);江苏高校优势学科建设工程资助项目(PAPD)。

摘　　要：【目的】基于2000、2010和2018年无锡市30 m分辨率土地利用数据,利用生态系统服务与权衡的综合评估(InVEST)模型评估了无锡市生境质量及生境退化度演变规律,为无锡市的生态保护和修复提供依据。【方法】基于InVEST模型模拟了无锡3个不同时期的生境质量、生境退化度,并利用土地利用转移矩阵分析了土地利用与生境质量、生境退化度变化的关系。【结果】2018年无锡市高等级生境质量占全市面积约31.11%,一般等级比例较大,约占全市面积的40.60%;无锡市生境质量空间分布差异较大,高等级生境质量主要分布在宜兴市、滨湖区等地区,而低等级生境质量主要位于无锡市主城区及江阴市等地;过去20年,无锡市生境质量总体上有明显退化趋势,其中梁溪区等无锡主城区以及江阴市退化最明显,宜兴市退化度变化不大;无锡市生境质量变化与土地利用变化是密不可分的,其中,无锡市建设用地从2000年的717.40 km^(2)增加至2018年的1 291.40 km^(2),增幅约12%,而建设用地增多的区域与生境质量下降比较明显的区域在空间上有较高的一致性。【结论】无锡市的生境质量退化与耕地面积减少及城市建设用地增多等密切相关,需合理利用土地,严格控制建设用地规模,保持生态用地规模,不断提高湿地保护和修复工作。【Objective】Based on 30 m of high-resolution land use data of Wuxi City in 2000,2010 and 2018,the Integrated Valuation of Ecosystem Services and Trade-offs(InVEST)model was used to reveal the changing features of habitat quality in Wuxi.Such information could provide a basis for ecological environment protection and restoration in Wuxi.【Method】Using the InVEST model,the habitat quality and habitat degradation degree of Wuxi during recent 20 years were simulated,and the relationship between the changes of land use,habitat quality and habitat degradation degree was analyzed by using the land use transfer matrix.【Result】In 2018,high-grade habitats in Wuxi accounted for approximately 31.11%of the city’s area,whereas the proportion of general grades was relatively higher,accounting for approximately 40.60%of the city’s area.The spatial distribution of habitat quality in Wuxi was various,with the high-grade habitats mainly distributed in Yixing City,Binhu District and other areas,while the low-grade habitats are predominantly located in the main urban area of Wuxi City and Jiangyin City.In the past 20 years,habitat quality in Wuxi has shown a significant degradation trend,of which the main urban areas of Wuxi such as Liangxi District and Jiangyin City have the most obvious degradation,whereas the degradation degree of Yixing City has not changed much.The changes of habitat quality and land use in Wuxi are inseparable,and among them,the construction land of Wuxi increased by approximately 12%from 717.40 km^(2) in 2000 to 1291.40 km^(2) in 2018,and the area with increased construction land and the area where the quality of habitat decline is more obvious have good spatial consistency.【Conclusion】Degradation of habitat quality in Wuxi is closely related to the reduction of cultivated land area and the increase of urban construction land.Therefore,it is necessary to rationally use land,strictly control the scale of construction land,maintain the scale of ecological land use,and continuously improve the p

关 键 词：土地利用 生态系统服务和权衡综合评估模型(InVEST模型) 生境质量 生境退化度 建设用地 耕地面积 无锡市 

分 类 号：S718[农业科学—林学] Q149[生物学—生态学]