南京市域绿地格局时空演变特征及其影响因素  

Spatio-temporal evolution of Nanjing’s urban green space pattern and its influencing factors

作　　者：许浩[1] 李蔚 刘伟 王成康[1] XU Hao;LI Wei;LIU Wei;WANG Chengkang(College of Landscape Architecture,Nanjing Forestry University,Nanjing 210037,Jiangsu,China)

机构地区：[1]南京林业大学风景园林学院,江苏南京210037

出　　处：《浙江农林大学学报》2023年第2期407-416,共10页Journal of Zhejiang A&F University

基　　金：江苏高校优势学科建设工程资助项目;江苏省基础研究计划(自然科学基金)项目(BK20190751)。

摘　　要：【目的】市域绿地不仅是区域生态环境的重要组成部分,也是城郊游憩的重要承载空间和约束城市无限蔓延的结构性空间。南京是长江三角洲地区的特大城市,南京市域绿地对于长江三角洲地区的可持续发展具有重要作用。研究南京市域绿地动态景观变化及其影响因素有助于进一步实现南京绿地空间结构优化以及区域可持续发展。【方法】选取2000、2005、2010、2015、2020年5个时间节点的南京市土地覆盖数据,运用动态度计算和景观格局指数分析南京市域绿地格局时空演变规律,利用偏最小二乘回归方程(PLSR)模型探究社会经济因素和自然因素对绿地格局演变的影响作用。【结果】2000—2020年,南京市域绿地面积整体上呈先减后增的状态。2000—2005年,南京市域绿地斑块趋于整体化,绿地景观破碎度有所缓和。2005年后市域绿地规模有所增加,但破碎化趋势明显,整体景观连接度也持续降低。回归模型显示:社会经济因素中产业结构比例以及建成区绿化面积和市域绿地格局变化有较大关联性,自然因素作用力大小存在差异。【结论】南京市域绿地规模总体有所增加,格局破碎化趋势明显。社会经济影响因子是市域绿地空间格局演变的直接影响力,自然因素多对绿地格局呈限制作用,亟需加强针对区域绿地的系统性规划。[Objective]The urban green space is not only an important part of the regional ecological environment,but also an important bearing space for suburban recreation and a structural space that restricts the infinite spread of the city.Therefore,this study,with an investigation of the dynamic landscape changes of green space in Nanjing,a mega city in the Yangtze River Delta and its influencing factors,is aimed to help further optimize the spatial structure of green space and regional sustainable development.In Nanjing so as to promote the sustainable development of the Yangtze River Delta region.[Method]With the land cover data of Nanjing City in five time nodes in 2000,2005,2010,2015 and 2020 selected,an analysis was conducted of the spatio-temporal evolution pattern of the green space in Nanjing City employing dynamic degree calculation and landscape pattern index.Then,the partial least squares regression equation(PLSR)model was adioted to explore the impact of socioeconomic factors and natural factors on the evolution of green space pattern.[Result]From 2000 to 2020,there was first a decrease and then an increase in the green space in Nanjing.From 2000 to 2005,the green space patches in Nanjing City tended to be integrated,with the fragmentation of green space landscapes easing up.After 2005,the scale of urban green space has increased,with an obvious fragmentation trend and a steady decrease in the overall landscape connectivity,The regression model showed that among the socioeconomic factors,the proportion of the industrial structure,the green area of the built-up area and the changes in the urban green space pattern had a greater correlation,and there were differences in the force of natural factors.[Conclusion]The overall scale of green space in Nanjing has increased with an obvious trend of pattern fragmentation and the socioeconomic factor being the direct influencing factor in the evolution of urban green space spatial pattern which is subject to the restriction of many natural factors.There is an urgent ne

关 键 词：南京市 市域绿地 景观格局 时空演变 影响因素 

分 类 号：S771.8[农业科学—森林工程]