| 摘要: |
| 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。 |
| 关键词: 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) |
| DOI：10.19775/j.cla.2024.04.0006 |
| 投稿时间：2023-12-12修订日期：2024-01-19 |
| 基金项目:国家重点研发计划课题“典型城市廊道多功能耦合
网络构建与生态修复技术”(编号2022YFC3802604)、国家
自然科学基金面上项目“城市生态廊道多尺度结构与功能连接
度的关联机制”(编号32171569)和上海市园林科学规划研究
院院立基金项目“基于多模型集成的城市生态廊道智能构建技
术研究”(编号2021-3-1)共同资助 |
|
| Research on the Spatial Demarcation of UrbanEcological Corridors Based on FunctionalConnectivity |
| ZHANG Lang,YU Haoran,ZHONG Qicheng,ZHANG Guilian,ZHANG Qingping |
| Abstract: |
| 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. |
| Key words: landscape architecture urban ecological corridor corridor width functional connectivity circuit theory Morphological Spatial Pattern Analysis (MSPA) |
