基于景观格局的土地利用生态风险评价——以兰州市为例  

Ecological risk assessment of land use based on landscape pattern:A case study of Lanzhou City

作　　者：薛志鹏 卫亚星[1] XUE Zhipeng;WEI Yaxing(School of Geographical Sciences,Liaoning Normal University,Dalian Liaoning 116000,China)

机构地区：[1]辽宁师范大学地理科学学院,辽宁大连116000

出　　处：《河北省科学院学报》2024年第4期1-7,20,共8页Journal of The Hebei Academy of Sciences

摘　　要：本文以中国科学院资源环境科学与数据中心的土地利用数据为基础,利用转移矩阵、空间自相关(全局空间自相关和局部空间自相关),选用景观格局指数来构建生态风险指数,利用克里金插值分析进行可视化,对兰州市土地利用变化及生态风险的时空分布特征进行分析。结果表明:兰州市耕地和草地减少,建设用地明显增加,建设用地主要由草地转换而来;Moran’s I表明,兰州市土地利用与生态风险呈正相关,分布呈聚集模式,以“高-高”和“低-低”聚类模式为主;生态风险较高区域集中于城关区、安宁区、七里河等主要城区。In this paper the land use change and ecological risk in Lanzhou City are studied,with the resources and environment science and data center of the Chinese Academy of Sciences( https://www.resdc.cn).Based on land use data,an ecological risk index is constructed using transfer matrix,spatial autocorrelation(global spatial autocorrelation and local spatial autocorrelation),and landscape pattern index.Kriging interpolation analysis is used for visualization to analyze the spatiotemporal distribution characteristics of land use ecological risk in Lanzhou City.The results show that farmland and grassland in Lanzhou City have decreased,while construction land has significantly increased.The construction land is mainly converted from grassland.The Moran's I index indicates that there is a positive correlation between land use and ecological risk in Lanzhou City,with a clustering pattern distribution,mainly consisting of "high-high" and "low-low" clustering patterns.The areas with high ecological risks are concentrated in major urban areas such as Chengguan District,Anning District,and Qilihe.

关 键 词：土地利用 景观格局 生态风险 空间自相关 

分 类 号：F301.2[经济管理—产业经济]