| 基于“干旱-人类活动”视角的河西走廊地区国土空间生态修复区域顺序划定 |
| 摘要点击 202 全文点击 1 投稿时间：2025-06-13 修订日期：2025-08-04 |
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| 中文关键词 生态退化风险 生态安全格局 标准化降水蒸散指数 形态空间格局分析 电路理论 河西走廊 |
| 英文关键词 ecological degradation risk ecological security pattern standardized precipitation evaporation index morphological spatial pattern analysis circuit theory Hexi Corridor |
| DOI 10.13227/j.hjkx.202506164 |
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| 中文摘要 |
| 在国土空间生态修复背景下，精准识别生态修复区域以及合理划定修复的优先序，是科学有序推进生态修复工作的前提. 通过构建“干旱-人类活动”定量评估生态退化风险，利用形态空间格局分析（MSPA）和电路理论模型等方法构建河西走廊地区生态安全格局，进一步识别生态源地、廊道、夹点和障碍点等生态要素作为生态修复区，最终叠加退化风险等级对修复区进行修复顺序划定. 结果表明：①在干旱的自然条件下，人类活动导致河西走廊65%以上的区域处于中等退化风险等级及以上. ②共识别出23块生态源地，大多位于祁连山自然保护区和绿洲核心，总面积21 638.99 km2；提取出39条生态廊道，总长1 903.77 km，主体部分位于酒泉市域绿洲区与祁连山自然保护区连接处；识别出53处生态夹点和18处生态障碍点，面积分别为244.16 km2和206.24 km2，大部分均位于酒泉市. ③划定优先修复源地1 261.67 km2、优先修复廊道646.57 km、优先修复夹点25处和优先修复障碍点5处. 未来河西走廊地区应当着力于关键生态要素的修复和保护，按照以优先修复源地为基础，重点修复沙漠和绿洲边缘的重要生态廊道，兼顾解决生态夹点瓶颈的顺序，逐步实现基础性、关键性生态要素的修复，最终促进地区生态系统健康发展. |
| 英文摘要 |
| In the context of ecological restoration within national territories， the precise identification of restoration areas and the judicious prioritization of restoration efforts are essential prerequisites for the systematic and effective advancement of ecological restoration initiatives. This study focuses on the Hexi Corridor as the research area and quantitatively assesses the risk of ecological degradation by developing a “drought-human activities” framework. It establishes an ecological security pattern utilizing morphological spatial pattern analysis （MSPA） and circuit theory modeling. Furthermore， the study identifies ecological source areas， corridors， pinch points， obstacles， and other ecological elements designated as ecological restoration zones. By overlaying the degradation risk levels， the study delineates the restoration sequence of these zones. The findings indicate that： ① Under natural drought conditions， human activities have resulted in over 65% of the Hexi Corridor being classified as medium or higher degradation risk level. ② We have identified 23 ecological sources， most of which are located in the Qilian Mountain Nature Reserve and the core of oases， with a total area of 21 638.99 km2； extracted 39 ecological corridors with a total length of 1 903.77 km， mainly situated at the connection between the Jiuquan oasis area and the Qilian Mountain Nature Reserve； and identified 53 ecological pinch points and 18 ecological barrier points， with areas of 244.16 km2 and 206.24 km2， respectively， most of which are located in Jiuquan. ③ The plan prioritizes the restoration of 1 261.67 km2 of source areas， 646.57 km of corridors， 25 ecological nodes， and 5 key obstacles. In the future， the Hexi Corridor Region should focus on restoring and protecting key ecological elements， with a priority on restoring source areas， followed by the critical ecological corridors at the edges of deserts and oases， while also addressing ecological bottlenecks. This approach aims to gradually restore foundational and critical ecological elements， ultimately promoting the healthy development of the regional ecosystem. |
