摘要
随着区域协同一体化进程的加快,水土资源短缺、生态环境退化等问题为城市高质量发展带来巨大压力。构建区域生态安全格局,是缓解生态系统保护与人类社会发展矛盾的有效途径。选择苏南城市群为研究对象,综合MSPA方法与景观连通性评估筛选生态供给源地,利用生态稀缺度评价筛选生态需求源地;进而采用最小阻力模型提取耦合供需空间的生态廊道,并结合战略点设置构建生态安全格局。结果表明:(1)苏南城市群生态供给源地总面积为4876.76 km^(2),占研究区总面积的17.36%。生态需求源地总面积为2099.8 km^(2),占研究区总面积的7.48%;(2)共构建生态供给廊道55条,生态供需廊道199条,总长度2296.95 km;(3)共得到98处战略点,作为未来城镇生态建设优先考虑的关键空间节点。研究可为包括苏南城市群在内的长三角地区在共守生态安全前提下优化国土空间开发格局提供参考,也为国内其他高密度城市群生态安全格局构建提供借鉴。
With the acceleration of regional collaborative integration, the shortage of soil and water resources along with the degradation of ecological environment have brought great pressure to the high-quality development of cities. Constructing the regional ecological security pattern is regarded as a effective way to alleviate the contradiction between ecosystem protection and social development. Choosing Southern Jiangsu urban agglomeration as the studying subject, the paper identifies ecological supply source by the combination of MSPA method and landscape connectivity assessment. Besides, the ecological demand source is selected by the ecological scarcity evaluation. Further, extracting the ecological corridors coupling supply and demand space by applying the minimum cumulative resistance model. Finally, setting the strategic points and landscape ecological security pattern was then constructed.The results show that(1)The total area of the ecological supply source is 4 876.76 km^(2), accounting for 17.36% of the study area. The total area of ecological demand sources is 2 099.8 km^(2), accounting for 7.48% of the study area.(2)55 ecological supply corridors and 199 ecological supply-demand corridors are constructed, with a total length of 2 296.95 km.(3) 98 strategic points were obtained as the key spatial nodes of urban ecological construction in the future. The research can offer references for the Yangtze River Delta region, which includs the Southern Jiangsu urban agglomeration, to optimize the territorial space development pattern under the guarantee of ecological security. Also, the research provides a reference for the construction of ecological security pattern of other high-density urban agglomerations in China.
作者
魏家星
张昱镇
连紫璇
殷敏
欧维新
WEI Jia-xing;ZHANG Yu-zhen;LIAN Zi-xuan;YIN Min;OU Wei-xin(College of Horticulture,Nanjing Agricultural University,Nanjing 210095,China;Key Laboratory of Landscape Design,Ministry of Agriculture and Rural Affairs,Nanjing 210095,China;College of Public Adminstration,Nanjing Agricultural University,Nanjing 210095,China;National&Joint Local Engineering,Research Center for Rural Land Resources Use and Consolidation,Nanjing 210095,China)
出处
《长江流域资源与环境》
CAS
CSSCI
CSCD
北大核心
2022年第2期387-397,共11页
Resources and Environment in the Yangtze Basin
基金
国家自然科学基金(32001360)
中国科学院“美丽中国生态文明建设科技工程”专项(XDA23020200)
江苏省自然科学基金(BK20190545)。
关键词
生态安全格局
生态源地
生态廊道
供需空间
苏南城市群
ecological security pattern
ecological source
ecological corridor
supply and demand space
Southern Jiangsu urban agglomeration
