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长江中游城市群生态网络构建、优化与协同治理

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[目的]科学构建长江中游城市群生态网络,为跨区域生态保护和协同治理提供科学依据.[方法]遵循"源地识别—阻力面构建—廊道提取"框架构建多时点生态网络,基于网络属性和人类活动进行网络评价.[结果](1)研究区生态源地面积由2000年的2.67 × 104 km2下降到2020年的2.29 ×104 km2,主要分布在湖北省西北部山区、江西、湖南交界处的山脉及鄱阳湖流域等地区.生态廊道数量由69条下降为42条,总长度由1.53× 104 km下降到1.16×104 km.研究区内生态阻力逐渐上升,网络重心由湖北省转移至湖南省,形态上由"三横两纵"的条带式分布转变为集中组团式分布.生态网络全局集程度、网络连通性均在减弱,总体上呈现结构收缩、功能减弱的变化趋势.网络周围5,15 km范围受人类活动影响最为明显.(2)在网络优化中,基于生态网络与交通网络交汇识别102个断裂点,基于源地间距离设置17个踏脚石.在生态网络5,15 km的范围设立"核心保护带"和"生态控制带",总长1 505 km.[结论]在协同治理中,省级层面上湖北、江西两省应当完善流域跨省生态补偿机制,湖南、江西两省应当强化协同机制实施中的司法保障;市级层面上针对管理重点实行差别化管控,通过规划潜在生态廊道推进市域层面协同治理.优化后的生态网络集程度由0.22提升至0.30,有效提升区域间生态连通性.
Construction,Optimization and Synergistic Governance of the Ecological Network of Urban Agglomeration in the Middle Reaches of Yangtze River
[Objective]This study is aimed to scientifically construct the ecological network of urban agglomerations in the middle reaches of the Yangtze River,and to provide scientific basis and theoretical reference for cross-regional ecological protection and collaborative governance.[Methods]Multi-temporal ecological network was conducted based on the framework of"source identification-resistance surface construction-corridor extraction",and network evaluation was done based on network attributes and human activities.[Results](1)Ecological sources were mainly concentrated in the mountainous of northwestern Hubei Province,junction of Jiangxi and Hunan,and the basin of Poyang Lake basin,with the area reducing from 2.67 ×107 km2 in 2000 to 2.29 ×107 km2 in 2020.The number of ecological corridors decreased from 69 to 42,and the total length decreased from 1.53 × 104 km to 1.16×104 km.The resistance of study area increased gradually,the center of gravity of network had shifted from Hubei Province to Hunan Province,transforming from a strip distribution of"three horizontals and two verticals"to a concentrated group distribution.The overall degree of aggregation and network connectivity of the ecological network were weakening,and showing a trend of structural contraction and functional weakening overall.(2)In network optimization,102 ecological"breaking points"were identified,and 17 stepping stones were set based on the distance between the source and destination.A"core protection belt"and an"ecological control belt"were set up within 5 and 15 km of the network,with length of 1 505 km.[Conclusion]In synergistic governance,at the provincial level,Hubei and Jiangxi provinces should improve the cross-provincial ecological compensation mechanism for river basins,while Hunan and Jiangxi provinces should strengthen the judicial guarantee in the implementation of the synergistic mechanism.At the city level,differentiated management and control would be implemented for key management areas,and potential ecological corridors would be planned to promote synergistic governance at the city level.The integration of the optimized ecological network was improved from 0.22 to 0.30,effectively improving ecological connectivity between regions.

ecological networkMSPAMCR modelnetwork evaluationsynergistic governanceurban agglomeration in the middle reaches of Yangtze River

杨欣、肖豪立、王艺霏

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华中农业大学公共管理学院,武汉 430070

华中农业大学生态与环境经济研究所,武汉 430070

中国科学院地理科学与资源研究所,北京 100101

中国科学院大学,北京 100049

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生态网络 MSPA MCR模型 网络评价 协同治理 长江中游城市群

国家自然科学基金教育部人文社科基金规划项目武汉市曙光计划项目中央高校基本科研业务费专项中央高校基本科研业务费专项

7170406121YJA79007220230202010203492662023YJ0012662023PY015

2024

10.13870/j.cnki.stbcxb.2024.01.020

水土保持学报
中国土壤学会　中国科学院水利部水土保持研究所

水土保持学报

CSTPCD北大核心
影响因子：1.226
ISSN：1009-2242
年,卷(期)：2024.38(1)
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