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
	2024-04-20
发表期刊	干旱区研究
卷号	41 期号:5 页码:856-864
摘要	生态网络的构建与优化是遏制景观破碎化、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	P901
文献类型	期刊论文
条目标识符	http://ir.lzufe.edu.cn/handle/39EH0E1M/36121
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(5):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(5),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 41.5(2024):856-864.