机构地区:[1]甘肃省生态环境科学设计研究院,甘肃兰州730020 [2]甘肃省生态文明建设研究中心,甘肃兰州730020 [3]中国科学院西北生态环境资源研究院,甘肃兰州730000 [4]甘肃有色冶金职业技术学院,甘肃金昌737100
出 处:《环境科学与技术》2025年第2期191-202,共12页Environmental Science & Technology
基 金:甘肃省陇原青年英才支持计划(20220618);甘肃省自然科学基金项目(22JR5RC1081)。
摘 要:生态系统服务供需关系的空间格局可为生态保护管理政策提供可视化的指导信息。由中国首次提出的生态保护红线为区域生态保护提供了严格的政策遵循,但目前生态保护红线对区域生态系统服务供需关系的影响研究还较少。该研究以甘肃省为例,基于2000-2020年的生态系统格局数据,采用生态服务供需评价矩阵,引入相关供需指数指示生态服务匹配状况,定量评估了甘肃省生态保护红线对生态系统服务供需的影响,研究结果表明:(1)自2000年以来,人类活动较低的生态保护红线区供需盈余较多,而人类活动较高的甘肃中部和北部绿洲区,供需比较低,处于或接近赤字状态,出现空间上供需错配;(2)省域范围内生态系统服务赤字总体上均有加剧的趋势,而生态系统服务盈余略有增加,生态保护红线区的生态系统服务赤字总体上比省域范围内的小,生态系统服务供需盈余水平下降的区域集中在非生态保护红线区;(3)甘肃省大部分地区属于H-L、L-L格局,生态保护红线政策实施以来,生态系统服务供需模式不平衡在逐渐缩小,但是甘肃省中部依然是供需矛盾最突出的区域。研究结果可为区域生态服务供需格局优化和构建西北生态安全屏障等规划管理提供科学依据与理论支撑。Spatial patterns in ecosystem services(ES)supply and demand can provide useful visual guidance information for ecological protection management policies.In China,the concept of the Ecological Conservation Red Line(ECRL)was intro-duced to provide strict protection for areas,but its effect on ES supply and demand is not fully understood.Taking Gansu Prov-ince as an example,based on the ecosystem pattern data from 2000 to 2020,a regional ES supply and demand evaluation matrix was employed,and relevant supply and demand indexes were introduced to delineate the supply and demand zones for various ES within the region.The impact of ECRL on the supply and demand of ES was quantitatively evaluated.The results showed that there were higher supplies and lower demand and more surpluses with low human activities in the ECRL,while the center and northern oasis areas in the Province where there was intensive human activities,and there was low ES supply and high demand from 2000 to 2020.The deficit of ES within the provincial regions was generally increasing,while the surplus of ES has slightly increased.The deficit of ES in the ECRL was generally smaller than that within the provincial scope,and regions with declining surplus levels of ES supply and demand were concentrated in non-ECRL areas.Most of the regions belonged to the H-L and L-L pattern in the Province.The regions with imbalanced supply and demand of ES were mainly concentrated in areas with higher economic levels.After the implementation of the ECRL policy,the pro-portion of negative changes and positive changes in the supply and demand pattern of ES has decreased and increased in both the ECRL and the Province.The imbalance in the supply and demand pattern of ES was gradually shrinking.However,the central part of the Province was still the most prominent area of supply-demand contradiction.The research results can pro-vide scientific basis and theoretical support for optimizing the supply and demand pattern of regional ES and building a northwest ecological securit
关 键 词:生态保护红线 生态系统服务 供需指数 梯度分析 甘肃省
分 类 号:X32[环境科学与工程—环境工程]
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