摘要
科学识别关键生态网络要素是市域生态网络规划的重点,对于市域生态网络分级管控,指导生态用地布局,促进城市可持续发展具有重要意义。以北京市为例,通过最小累积阻力模型构建生态网络,应用景观中心度指标评价并识别关键网络要素,依据不同重要等级网络要素空间分布情况,分析现状生态网络问题,并提出生态网络规划管控与保护策略。结果表明:研究区生态源地斑块共56个,其中核心源地斑块共12个,主要位于研究区中北部,分布连续且面积较大;踏脚石斑块18个,其中核心踏脚石斑块8个,呈聚集状分布于研究区中部,对研究区南北部重要生态源地斑块起到连通作用;识别生态廊道58条,其中核心廊道23条,主要分布于研究区中部,位于核心源地斑块周围。通过景观中心度指标能够科学识别关键生态网络要素,以此来指导城市生态网络分级管控与生态用地布局规划,高效协调城市发展与生态保护之间的关系,为同尺度生态网络规划提供一定的借鉴与参考。
The identification of key ecological network elements is the focus of urban ecological network planning,which is of great significance for the hierarchical control of the municipal ecological network,guiding the layout of ecological land and promoting the sustainable development of the city.Taking Beijing as an example,the paper constructs an ecological network through the Least Cumulative Resistance model,evaluates and identifies key network elements by applying landscape centrality indicators,analyses the current ecological network problems based on the spatial distribution of network elements of different levels of significance,and puts forward the ecological network planning,control and protection strategies based on this.The results show that there are 56 ecological source patches in the study area,including 12 core source patches,which are mainly located in the north and central part of the study area,with a continuous distribution and large area;there are 18 stepping-stone patches,including 8 core stepping-stone patches,which are distributed in the central part of the study area in an aggregated form,and they play a role of linking the important ecological source patches in the north and south part of the study area;58 ecological corridors have been identified,of which 23 core corridors are mainly distributed in the central part of the study area,and they are located in the north part of the study area.There are 58 ecological corridors,of which 23 are core,mainly distributed in the central part of the study area and located around the core source patches.The landscape centrality index can scientifically identify the key ecological network elements,which can guide the urban ecological network hierarchical control and ecological land layout planning,efficiently coordinate the relationship between urban development and ecological protection,and provide some reference for the same scale ecological network planning.
作者
盖恒
张宜芹
何梓彦
刘文苑
张彬
Gai Heng;Zhang Yiqin;He Ziyan;Liu Wenyuan;Zhang Bin(School of Construction,Guangdong Technology College,Zhaoqing 526070,Guangdong,China)
出处
《绿色科技》
2024年第15期6-12,共7页
Journal of Green Science and Technology
基金
2024年广东理工学院科技项目暨2024年创新强校工程科研项目(编号:2024YBZK007)。
关键词
市域生态网络
景观中心度
最小累积阻力模型
分级管控
北京市
urban ecological network
landscape centrality
minimum cumulative resistance model
graded control
Beijing City
作者简介
第一作者:盖恒(1991-),男,硕士,研究方向为绿色基础设施、生态网络、生态系统服务、生物多样性保护。
