基于GIS格网模型的广州市土地生态安全格局演化  

Evolution of Land Ecological Security Pattern in Guangzhou City Based on GIS Grid Model

作　　者：聂嘉琦 刘光盛[1,2,3] 池杰 NIE Jiaqi;LIU Guangsheng;CHI Jie(School of Public Administration,South China Agricultural University,Guangzhou 510640,China;Key Laboratory of Natural Resources Monitoring in Tropical and Subtropical Area of South China,Ministry of Natural Resources,Guangzhou 510700,China;Guangdong Geographical Science Data Center,Guangzhou 510700,China;Shandong Jianzhu University Design Group Co.,Ltd.,Jinan 250000,China)

机构地区：[1]华南农业大学公共管理学院,广州510640 [2]自然资源部华南热带亚热带自然资源监测重点实验室,广州510700 [3]广东省粤港澳大湾区地理科学数据中心,广州510700 [4]山东建筑大学设计集团有限公司,济南250000

出　　处：《科技和产业》2024年第3期216-222,共7页Science Technology and Industry

基　　金：国家社会科学基金(19BGL228)。

摘　　要：以公里格网为评价单元,构建基于PSR-NES(压力-状态-响应和经济-环境-社会)模型的土地生态安全测度指标体系,运用突变级数法动态识别2010—2020年广州市土地生态安全格局。结果表明:广州土地生态安全水平空间异质性较为明显,整体呈现“中间低,四周高”的分布格局;2010—2020年,广州市土地生态安全水平先下降后提高,其中,北部生态涵养区土地生态安全水平呈下降趋势,南部生态调节区土地生态安全状况逐渐好转,中部建成区土地生态安全状况不容乐观。未来城镇扩张应尽量避免侵占土地生态安全水平较高的区域,可通过分区治理,科学布局生产、生活、生态空间,优化产业结构,加强生态用地保护力度等措施持续改善土地生态安全状况。Taking the kilometer grid as the evaluation unit,a land ecological security measurement index system is constructed based on the PSR-NES(pressure-state-response and economy-environment-society)model,and the catastrophe progression method is used to measure the land ecological security status of Guangzhou from 2010 to 2020.The results showed that the spatial heterogeneity of the land ecological security level in Guangzhou is relatively obvious,which shows the overall distribution pattern is“low in the middle and high around”.From 2010 to 2020,the level of land ecological security in Guangzhou declined first and then improved,among which,the level of land ecological security in the northern ecological conservation area showed a downward trend,the situation of land ecological security in the southern ecological adjustment area gradually improved,and the situation of land ecological security in the central built-up area was not optimistic.The development of cities and towns should try to avoid encroaching on areas with a high level of land ecological security,measures such as zoning management,scientific layout of production,living,and ecological spaces,optimization of industrial structure,and strengthening of ecological land protection should be adopted to continuously improve the ecological security of land.

关 键 词：土地生态安全 GIS(地理信息系统)格网 突变级数法 空间分异 广州市 

分 类 号：X321[环境科学与工程—环境工程]