耦合生态系统服务和景观嵌套序列的内蒙古生态源地优先级识别及管控策略  

Prioritization identification and control strategy of ecological source areas in Inner Mongolia coupled with nested sequences of ecosystem services and landscapes

作　　者：黄俊涵 高阳 沈振 HUANG Junhan;GAO Yang;SHEN Zhen(College of Land Science and Technology,China Agricultural University,Beijing 100193,China;Department of Earth Science,National Natural Science Foundation of China,Beijing 100085,China)

机构地区：[1]中国农业大学土地科学与技术学院,北京100193 [2]国家自然科学基金委员会地球科学部,北京100085

出　　处：《生态学报》2024年第22期10442-10451,共10页Acta Ecologica Sinica

基　　金：国家自然科学基金项目(42071284)。

摘　　要：科学识别生态源地是构建区域生态安全格局的前提,对保持生态系统服务功能稳定、维护现有景观完整以及保障城市居民健康等具有重要意义。内蒙古作为构筑我国北方生态安全屏障关键环节的重要地区,在气候平衡、水量调节、维护生物多样性和保持水土等方面发挥着重要作用。然而,近年来受人类活动影响,内蒙古生态退化问题多有发生,影响区域生态安全与可持续发展。因此,以内蒙古为例,在对生态固碳、生境质量、产水服务和土壤保持服务功能评估的基础上,通过Zonation模型分析其生态重要性高低的景观嵌套序列,并识别内蒙古的生态源地。评估结果表示四类生态系统服务虽都表现出东高西低的空间分布特征,但中部的分布差异较大,并且中部地区的产水服务和土壤保持服务较低。模型分析结果表明内蒙古生态源地面积共353032.4km^(2),其中内蒙古一级生态源地面积为118040.3km^(2),主要分布在呼伦贝尔高原和大兴安岭南部等区域,二、三级生态源地依次分布在一、二级生态源地的外围。生态源地与生态红线的叠加分析结果显示,当前有157444.9km^(2)的生态源地在现有生态红线内,占生态红线总面积的44.6%。未来需考虑如何将生态源地保护优先级识别结果与现有生态保护红线相结合,并针对区域的实际情况,分级分类制定管理规则和策略,促进区域生态安全保障工作的开展更为高效。本研究可为内蒙古及其他干旱区生态安全格局的合理构建奠定基础,为助力国土空间生态可持续提供对策和建议。Scientific identification of ecological source areas is a fundamental step in establishing a regional ecological security pattern,and it holds significant importance in maintaining the stability of ecosystem service functions,protecting the integrity of current landscapes,and ensuring the health of urban residents.Inner Mongolia,as a key area for the construction of important ecological security barriers in the northern part of China,plays a crucial role in climate balance,water regulation,biodiversity maintenance,and soil and water conservation.In recent years,however,due to human activities,there has been a surge in ecological degradation in Inner Mongolia,affecting regional ecological security and sustainable development.Therefore,taking Inner Mongolia as an example,based on the evaluation of ecological carbon sequestration,habitat quality,water production services,and soil conservation services,a Zonation model is used to analyze the landscape nested sequences of high and low ecological importance,and to identify the ecological source areas of Inner Mongolia.The evaluation results indicated that while all four types of ecosystem services are distributed from high in the east to low in the west,there are notable variations in the central region.Moreover,the water yield and soil conservation services in this region are comparatively lower.The model analysis revealed that the total area of ecological source areas in Inner Mongolia was 353032.4km2,with primary ecological source areas covering 118040.3km2,mainly distributed in regions such as the Hulunbuir Plateau and the southern part of the Greater Khingan Mountains.Secondary and tertiary ecological source areas are distributed along the periphery of the first and Secondary areas in sequence.The overlay analysis of ecological source areas and ecological redlines showed that there are 157444.9km2 of ecological source area within the existing ecological redlines currently,accounting for 44.6%of the total ecological redline area.In the future,it is necessary to con

关 键 词：生态源地 优先级识别 生态系统服务 景观连通性 

分 类 号：X171.1[环境科学与工程—环境科学] P901[天文地球—自然地理学]