基于适应性循环的兰西城市群生态网络构建与优化

doi:10.13866/j.azr.2024.05.13

	基于适应性循环的兰西城市群生态网络构建与优化
其他题名	Construction and optimization of ecological network of Lanzhou-Xining urban agglomeration based on adaptive cycle
	许静1 ; 王德仁2
	2024
发表期刊	干旱区研究
卷号	41 期号:05 页码:856-864
摘要	生态网络的构建与优化是遏制景观破碎化和保障区域生态安全的有效途径。以兰西城市群为研究区，以适应性循环理论为基础，耦合粒度反推法与形态学空间格局分析(Morphological Spatial Pattern Analysis,MSPA)识别生态源地，组建“潜力-连通度-韧性”综合生态阻力面，运用电路理论判别生态廊道和关键生态节点，构建生态网络并提出优化对策。结果表明：研究区生态源地空间分布不均且破碎化，总面积4147.84 km2；阻力整体表现为西高东低，并呈以主城为中心向四周递减的趋势；提取生态廊道40条，主要分布在研究区中部，总长度2278.59 km；提取生态夹点24处，多分布在主要河流廊道和生态源地间；判别生态障碍点25处，多位于生态廊道上；生态网络结构指数α、β和γ分别为0.60、2.00和0.74，通过增设12处踏脚石斑块，α、β和γ指数分别提高18.33%、14.00%和9.46%。研究结果可以为兰西城市群国土空间开发及生态安全维护提供参考。
其他摘要	The construction and optimization of an ecological network is an effective way to prevent landscape fragmentation and ensure regional ecological security.In this study,the Lanzhou-Xining urban agglomeration was selected as the research area.Using the adaptive cycle as the theoretical basis,coupled with the granularity in-verse method and morphological spatial pattern analysis,the ecological sources were identified,and the compre-hensive"potential-connectivity-resilience"ecological resistance surface was established.The circuit theory was applied to determine the vital ecological nodes and corridors.On this basis,an ecological network was construct-ed and optimization strategies were proposed.The results showed that the spatial distribution of ecological sourc-es was uneven and fragmented,covering a total area of 4147.84 km2.As a whole,the resistance of the study area was characterized by a"high in the west and low in the east"trend,decreasing from the main city to surrounding areas.In total,40 ecological corridors with a total length of 2278.59 km were extracted and distributed in the cen-tral part of the study area.Similarly,24 ecological pinch points were extracted,primarily distributed in major riv-er corridors and ecological sources;25 ecological barrier points were identified,mostly located in ecological cor-ridors.The structural indices of the ecological network α,β,and γ were 0.60,2.00,and 0.74,respectively.By add-ing 12 stepping-stone patches,these indices increased by 18.33%,14.00%,and 9.46%,respectively.These results can provide a references point for land-space development and ecological security maintenance in the Lanzhou-Xining urban agglomeration.
关键词	生态网络适应性循环生态廊道关键生态节点粒度反推法兰西城市群
DOI	10.13866/j.azr.2024.05.13
URL	查看原文
收录类别	北大核心 ; 中国科技核心期刊 ; CSCD
ISSN	1001-4675
语种	中文
原始文献类型	学术期刊
中图分类号	TU984.115
文献类型	期刊论文
条目标识符	http://ir.lzufe.edu.cn/handle/39EH0E1M/36221
专题	农林经济管理学院经济学院
作者单位	1.兰州财经大学农林经济管理学院; 2.兰州财经大学经济学院
第一作者单位	农林经济管理学院
推荐引用方式 GB/T 7714	许静,王德仁. 基于适应性循环的兰西城市群生态网络构建与优化[J]. 干旱区研究,2024,41(05):856-864.
APA	许静,&王德仁.(2024).基于适应性循环的兰西城市群生态网络构建与优化.干旱区研究,41(05),856-864.
MLA	许静,et al."基于适应性循环的兰西城市群生态网络构建与优化".干旱区研究 41.05(2024):856-864.