气候变化和土地利用/覆盖变化对中国东北长白山生态安全网络的影响

IF 7 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Ecological Indicators Pub Date : 2024-11-14 DOI:10.1016/j.ecolind.2024.112849

Jinyuan Ren , Wen J. Wang , Long Fei , Lei Wang , Shanfeng Xing , Yu Cong

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引用次数: 0

摘要

一个强大的生态安全网络（ESN）对于保护山区生态安全和促进可持续发展至关重要。这些地区对气候变化和土地利用/覆盖变化（LUCC）高度敏感，可能导致生态系统服务退化甚至丧失，并影响 ESN 的结构和连通性。以往的研究对这些地区生态系统网络的构建和变化关注相对较少，尤其是在区分单独效应（气候变化或土地利用/覆盖变化）及其对生态系统网络的交互效应方面。在本研究中，我们研究了长白山地区观测期和预测期 ESN 结构和连接性的变化，并通过因子控制实验探讨了气候变化和 LUCC 对这些变化的影响。结果表明，在过去的 30 年中，生态源面积增加了 19.11%，廊道长度减少了 29.44%，同时 ESN 的连通性也有所下降。预计未来 30 年，生态源面积将减少 43.18%，而走廊长度将增加 88.5%，ESN 的连通性总体上将增加。我们进一步发现，气候变化和 LUCC 对 ESN 的结构和连通性产生了负面影响。此外，ESN结构的变化主要归因于LUCC效应，其次是气候变化效应及其交互效应。而 ESN 连通性的变化则主要受到气候变化效应的影响，其次是 LUCC 效应及其交互效应。值得注意的是，交互效应对 ESN 结构和连通性产生了积极影响。我们的研究为土地管理和政策制定提供了重要参考，旨在维护生态安全和确保人类可持续发展。

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Impacts of climate change and land Use/Cover change on ecological security networks in Changbai Mountains, Northeast China

A robust Ecological Security Network (ESN) is essential for protecting ecological security and promoting sustainable development within mountainous regions. These regions were highly sensitive to climate change and Land Use/Cover Change (LUCC), which could result in a degradation or even loss of ecosystem services and affect the structure and connectivity of ESN. Previous studies have paid relatively little attention to the construction and change of ESNs in these regions, particularly in distinguishing the individual (climate change or LUCC) effects and their interactive effects on ESN. In this study, we investigated the changes in the structure and connectivity of ESN in observed and projected periods and explored the impacts of climate change and LUCC on these changes through factor control experiments within the Changbai Mountain region. Our results showed an increase of 19.11% in the area of ecological sources and a 29.44% decrease in the length of corridors, accompanied by a decline in the connectivity of ESN over the past 30 years. The area of ecological sources was projected to decrease by 43.18%, while the length of corridors was expected to increase by 88.5%, with an overall increase in ESN connectivity in the next 30 years. We further found that the climate change and LUCC exhibited negative impacts on the structure and connectivity of ESN. Moreover, the changes in ESN structure were primarily attributed to LUCC effects, followed by climate change effects and their interactive effects. While the changes in ESN connectivity were significantly affected by climate change effects, followed by LUCC effects and their interactive effects. Notably, the interactive effects showed positive impacts on the ESN structure and connectivity. Our study offers important references for land management and policy formulation, aiming to preserve ecological security and ensure sustainable human development.

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来源期刊

Ecological Indicators 环境科学-环境科学

CiteScore

11.80

自引率

8.70%

发文量

1163

审稿时长

78 days

期刊介绍： The ultimate aim of Ecological Indicators is to integrate the monitoring and assessment of ecological and environmental indicators with management practices. The journal provides a forum for the discussion of the applied scientific development and review of traditional indicator approaches as well as for theoretical, modelling and quantitative applications such as index development. Research into the following areas will be published. • All aspects of ecological and environmental indicators and indices. • New indicators, and new approaches and methods for indicator development, testing and use. • Development and modelling of indices, e.g. application of indicator suites across multiple scales and resources. • Analysis and research of resource, system- and scale-specific indicators. • Methods for integration of social and other valuation metrics for the production of scientifically rigorous and politically-relevant assessments using indicator-based monitoring and assessment programs. • How research indicators can be transformed into direct application for management purposes. • Broader assessment objectives and methods, e.g. biodiversity, biological integrity, and sustainability, through the use of indicators. • Resource-specific indicators such as landscape, agroecosystems, forests, wetlands, etc.