疏勒河流域生态安全网络构建及优化

doi:10.13287/j.1001-9332.202304.020

应用生态学报 ›› 2023, Vol. 34 ›› Issue (4): 1063-1072.doi: 10.13287/j.1001-9332.202304.020

疏勒河流域生态安全网络构建及优化

金银丽¹, 周冬梅¹, 周凡², 杨静¹, 朱小燕¹, 马静¹, 张军^1,3,4*

¹甘肃农业大学资源与环境学院, 兰州 730070;
²甘肃农业大学管理学院, 兰州 730070;
³甘肃省节水农业工程技术研究中心, 兰州 730070;
⁴甘肃农业大学甘肃省干旱生境作物学重点实验室, 兰州 730070

收稿日期:2022-07-12 接受日期:2023-01-18 出版日期:2023-04-15 发布日期:2023-10-15
通讯作者: *E-mail: zhangjun@gsau.edu.cn
作者简介:金银丽, 女, 1997年生, 硕士研究生。主要从事生态系统服务研究。E-mail: 1471215454@qq.com
基金资助:
甘肃省高等学校创新基金项目(2021A-061)、甘肃省自然科学基金项目(21JR7RA811)和甘肃省林业和草原科技创新计划项目(LCKJCX202205)

Construction and optimization of ecological security network in the Shule River Basin, China

JIN Yinli¹, ZHOU Dongmei¹, ZHOU Fan², YANG Jing¹, ZHU Xiaoyan¹, MA Jing¹, ZHANG Jun^1,3,4*

¹College of Resources and Environmental Science, Gansu Agricultural University, Lanzhou 730070, China;
²College of Management, Gansu Agricultural University, Lanzhou 730070, China;
³Research Center for Water-saving Agriculture in Gansu Pro-vince, Lanzhou 730070, China;
⁴Gansu Provincial Key Laboratory of Arid Land Crop Science, Gansu Agricultural University, Lanzhou 730070, China

Received:2022-07-12 Accepted:2023-01-18 Online:2023-04-15 Published:2023-10-15

摘要/Abstract

摘要： 生态安全网络构建与优化是保障区域生态安全、实现可持续发展的有效途径。基于形态学空间格局分析法和电路理论等方法构建疏勒河流域生态安全网络,采用PLUS模型模拟2030年土地利用变化,探索当前生态保护方向,并提出合理优化策略。结果表明: 疏勒河流域生态源地共计20个,总面积15774.08 km²,约占研究区总面积的12.3%,主要分布在研究区南部。共提取37条潜在生态廊道,其中,重要生态廊道22条,整体呈纵向分布的空间特征。识别生态夹点19处,生态障碍点17处。预测到2030年,建设用地扩张将不断挤压生态空间,明确6处生态保护空间预警点,有效规避了生态保护与经济发展间的冲突。优化后新增生态源地14个、规划踏脚石17个,生态安全网络闭合度指数、线点率和连接度指数较优化前分别提升18.3%、15.5%和8.2%,形成结构稳定的生态安全网络。研究结果可为生态安全网络优化与生态修复等事件提供科学依据。

关键词: 生态安全, 网络优化, 形态学空间格局分析, 生态安全格局, 疏勒河流域

Abstract: Construction and optimization of ecological security network is an efficient way to ensure regional ecological security and achieve sustainable development. Based on the morphological spatial pattern analysis method, circuit theory and other methods, we constructed the ecological security network of the Shule River Basin. The PLUS model was used to predict the land use change in 2030, with the aim to explore the current ecological protection direction and propose reasonable optimization strategies. The results showed that there were 20 ecological sources in the Shule River Basin, with a total area of 15774.08 km², accounting for 12.3% of the total area of study area. The ecological sources were mainly distributed in the south part of the study area. A total of 37 potential ecological corridors were extracted, including 22 important ecological corridors, which showed the overall spatial characteristics of vertical distribution. Meanwhile, 19 ecological pinch points and 17 ecological obstacle points were identified. We predicted that the expansion of construction land would continue to squeeze the ecological space by 2030, and identified 6 warning areas of ecological protection space to effectively avoid conflicts between ecological protection and economic development. After optimization, 14 new ecological sources and 17 stepping stones were added, and the circuitry, ratio of line to node and connectivity index of the ecological security network increased by 18.3%, 15.5%, and 8.2% respectively compared with those before optimization, forming a structurally stable ecological security network. The results could provide scientific basis for ecological security network optimization and ecological restoration.

Key words: ecological security, network optimization, morphological spatial pattern analysis, ecological security pattern, Shule River Basin

金银丽, 周冬梅, 周凡, 杨静, 朱小燕, 马静, 张军. 疏勒河流域生态安全网络构建及优化[J]. 应用生态学报, 2023, 34(4): 1063-1072.

JIN Yinli, ZHOU Dongmei, ZHOU Fan, YANG Jing, ZHU Xiaoyan, MA Jing, ZHANG Jun. Construction and optimization of ecological security network in the Shule River Basin, China[J]. Chinese Journal of Applied Ecology, 2023, 34(4): 1063-1072.

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疏勒河流域生态安全网络构建及优化

Construction and optimization of ecological security network in the Shule River Basin, China

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