摘要
【目的】分析与模拟曲靖市土地利用变化引发的区域生境质量时空演变特征,为区域土地资源空间配置与生态建设提供科学依据。【方法】基于1980、2000、2020年的土地利用数据,分析曲靖市1980—2020年土地利用变化特征,并采用PLUS-InVEST模型,综合运用转移矩阵、多情景模拟及生境质量评价等方法,模拟2040年4种情境下土地利用变化及生境质量的时空特征,总结驱动机制。【结果】曲靖市主要用地类型包括山区草地、林地及坝区耕地和建设用地,其中以草地和林地2类生态用地为主,占72%以上。2000—2040年,生境质量整体呈下降趋势,但高等级区域面积呈增加趋势;生境质量与土地利用空间分布密切相关,均呈北高南低的“山-坝”“锁定”效应,北部为生境质量热点集中区,南部为冷点集中区。生态保护情景更适合区域的发展需求,水域对生境质量贡献虽小,但极为重要。【结论】未来应加强山区林草地退化区修复,缓解生态退化;强化坝区内部生态用地保护与建设,提高生境质量;适度增加水域用地面积,减缓区域生境质量水平的降低。
[Objective]The study is to analyze and simulate land use and habitat quality in Qujing City,so as to provide scientific basis for the spatial allocation of regional land resources and ecological construction.[Method]Based on the land use data of 1980,2000 and 2020,the land use changes from 1980 to 2020 in Qujing City were analyzed.And PLUS-InVEST model,combined with the transfer matrix,multi-scenario simulation and habitat quality evaluation methods,were comprehensively used to analyze the spatio-temporal dynamic changes of land use and habitat quality in 2040,and summarize the driving mechanism.[Result]Grassland and forestland in mountainous,cultivated land and construction land in dam together constituted the land types in Qujing City.Among them,grassland and forest land were the main types,accounting for more than 72%.From 2000 to 2040,habitat quality showed a downward trend overall,but the area of high-grade habitats was increasing.Habitat quality was closely related to the spatial distribution of land use,and showed a“mountain-dam”and“lock-in”effect,which was high in the north and low in the south.The northern part of Qujing City was the hot spot concentration area of habitat quality,and the southern part was the cold spot concentration area.Ecological protection scenario was more suitable than the others for regional development needs,the contribution of watersheds to habitat quality was small but extremely important for Qujing City.[Conclusion]In the future,the restoration of degraded areas of forest and grassland in mountainous areas should be strengthened to alleviate ecological degradation.Strengthening the protection and construction of ecological land in the dam area is a important way to improve the level of habitat quality.Moderately increasing the area of water land is the best way to slow down the decline of regional habitat quality.
作者
高庆彦
潘玉君
吴仕海
朱海燕
许路艳
刘化
李东林
GAO Qingyan;PAN Yujun;WU Shihai;ZHU Haiyan;XU Luyan;LIU Hua;LI Donglin(Faculty of Geography and Tourism,Qujing Normal University,Qujing 655011,Yunnan,China;Department of Geography,Yunnan Normal University,Kunming 650500,Yunnan,China)
出处
《浙江农林大学学报》
北大核心
2025年第4期825-834,共10页
Journal of Zhejiang A&F University
基金
云南省地方本科高校基础研究联合专项项目(202101BA070001-279)
云南省基础研究计划青年项目(202301AU070003)。
关键词
生境质量
情景模拟
曲靖市
土地利用
habitat quality
scenario simulation
Qujing City
land use
