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基于功能连接度的城市生态廊道空间范围划定研究

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如何科学确定城市生态廊道空间范围是城乡规划和风景园林领域最为关心的问题之一.基于电路理论模型量化源地间物种转移廊道的功能连接度,引入经济学"效益成本比"思想构建城市生态廊道空间范围划定模型,提取生态廊道功能连接度效益成本比的拐点作为该条廊道规划建设的参照宽度.结果显示:1)研究区共识别59个30hm2以上的生态源地,其中大型生态源地多处在研究区外围,景观阻力面空间分布特征具有明显地"核心-边缘"特征;2)基于最小成本路径模型与电路理论提取出126条生态廊道,并识别了重要生态源地、夹点及障碍点,发现障碍点与夹点空间存在明显拮抗关系;3)整合电路理论(Circuitscape平台Pairwise模式)与分段线性回归模型划定研究区城市生态廊道的参考宽度范围处于60.27～371.83m,并对比了现有功能连接度量化方法对廊道参照宽度有潜在影响.以上研究结论可为今后城市乃至区域生态网络构建提供科学借鉴.
Research on the Spatial Demarcation of Urban Ecological Corridors Based on Functional Connectivity
Establishing the spatial scope of urban ecological corridors scientifically is among the primary issues in the fields of urban and rural planning and landscape gardening.Utilizing the circuit theory model,this article quantifies the functional connectivity of species transfer corridors between source areas,incorporates the economic principle of"benefit-cost ratio"to develop a model for delineating the spatial range of urban ecological corridors,and identifies the turning point of the benefit-cost ratio of ecological corridor functional connectivity as the reference width for corridor planning and construction.The findings reveal:1)In the study area,59 ecological source sites larger than 30 hectares were identified,with major ecological sources primarily situated around the perimeter.The spatial distribution of landscape resistance surfaces distinctly exhibits"core-periphery"characteristics;2)Utilizing the least-cost path model and circuit theory,126 ecological corridors were extracted,identifying critical ecological sources,pinch points,and barrier points,and a notable antagonistic relationship was observed between barrier points and pinch points;3)By combining circuit theory(Circuitscape platform's Pairwise mode)with segmented linear regression models,the reference width for urban ecological corridors in the study area was determined to be 60.27-371.83 meters,and an analysis was conducted on the potential influence of current functional connectivity quantification methods on the corridor's reference width.These research outcomes offer scientific guidance for the construction of urban and regional ecological networks in the future.

landscape architectureurban ecological corridorcorridor widthfunctional connectivitycircuit theoryMorphological Spatial Pattern Analysis(MSPA)

张浪、余浩然、仲启铖、张桂莲、张青萍、CUI Lingnan

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住房和城乡建设部科技委园林绿化专委会

南京林业大学风景园林学院

上海市园林科学规划研究院

上海城市困难立地绿化工程技术研究中心(上海200232)

南京林业大学风景园林学院(南京210037)

上海市园林科学规划研究院林科所

上海市城市困难立地绿化工程技术研究中心、城市困难立地生态园林国家林业局重点实验室(上海200232)

上海市园林科学规划研究院碳汇中心

上海城市困难立地绿化工程技术研究中心、城市困难立地生态园林国家林业局重点实验室(上海200232)

江南园林遗产保护与活化江苏省文化和旅游重点实验室(南京210037)

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风景园林 城市生态廊道 廊道宽度 功能连接度 电路理论 形态学格局分析(MSPA)

国家重点研发计划课题国家自然科学基金面上项目上海市园林科学规划研究院院立基金项目

2022YFC3802604321715692021-3-1

2024

10.19775/j.cla.2024.04.0006

中国园林
中国风景园林学会

中国园林

CSTPCD北大核心
影响因子：1.108
ISSN：1000-6664
年,卷(期)：2024.40(4)
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