基于土地覆被变化的安徽省生境质量时空演变特征  

Spatio-temporal Evolution Characteristics of Habitat Quality Based on Land Cover Change in Anhui Province

作　　者：吴楠[1] 陈红枫[1] 冯朝阳[2] 蒋洪强 吴文俊 李岱青[2] 赵洋尘 WU Nan;CHEN Hong-feng;FENG Chao-yang;JIANG Hong-qiang;WU Wen-jun;LI Dai-qing;ZHAO Yang-chen(Anhui Academy of Environmental Science,Hefei 230071,China;State Environmental Protection Key Laboratoryof Regional Eco-process and Function Assessment,Chinese Research Academy of Environmental Sciences,Beijing 100012,China;State Environmental Protection Key Laboratory of Environmental Planning and Policy Simulation,Chinese Academyfor Environmental Planning,Beijing 100012,China;Chinese Research Academy of Environmental Sciences,Beijing 100012,China)

机构地区：[1]安徽省环境科学研究院,安徽合肥230071 [2]中国环境科学研究院国家环境保护区域生态过程与功能评估重点实验室,北京100012 [3]生态环境部环境规划院国家环境保护环境规划与政策模拟重点实验室,北京100012 [4]中国环境科学研究院,北京100012

出　　处：《长江流域资源与环境》2020年第5期1119-1127,共9页Resources and Environment in the Yangtze Basin

基　　金：国家重点研发计划(2017YFC0503806);2019年“生态保护红线监管”项目对外委托课题(课题4);国家生态环境资产核算体系建立(2110105);安徽省省级环境保护科研项目(2016-11)。

摘　　要：基于InVEST模型的生境质量模块,采用1995~2018年安徽省3期的土地覆被数据,分析省域生境质量时空演变特征及其对土地覆被变化的响应。结果表明:安徽省土地覆被变化主要是农田转向建设用地和林草地,以及农田和湿地之间的相互转化;23年间,安徽省生境质量整体呈单边小幅下降趋势;由于作为生境质量威胁源的建设用地急速扩张和蔓延,引发合肥和沿江5市城区及周边生境质量的显著下降;部分保护地及周边开展了有效的退田还湖(湿)和退耕还林(草),局域生境质量有明显改善,但多数生态源地生境质量的区域性变化并不明显;最后,对省域生境质量优化提出了相应的对策建议。Response of spatio-temporal evolution characteristics of habitat quality to land cover change and landscape pattern change in Anhui Province was studied based on ArcGIS platform and the InVEST model, using the land use data of Anhui Province in 1995, 2005, and 2018. The main conclusions are the following: The main land cover changes in Anhui were that cultivated land was converted to construction land, forest and grassland, and there was mutual conversion between wetland and cultivated land. During the study period, The average index of habitat quality in Anhui Province showed a slight one-sided decline trend. Due to the rapid expansion of construction land which acted as a threat factor, habitat quality declined dramatically in urban and surrounding areas of Hefei and 5 cities along the Yangtze River. The effective project of returning farmland to lake and grain for green were carried out in some protected areas and surrounding areas, there has been a marked improvement in the habitat quality while the change of habitat quality in most ecological source areas was not obvious on a regional scale. The paper also puts forward policy suggestions for the optimization of habitat quality in relative areas.

关 键 词：土地覆被变化 InVEST模型 生境质量 时空演变 安徽省 

分 类 号：X171[环境科学与工程—环境科学]