气候变化及景观格局与生态安全的耦合关系

生态安全的本质集中在生态风险与生态脆弱性等方面,生态安全研究是低碳绿色发展的热点方向,对于优化景观生态空间结构与维护生态可持续性具有重要理论价值与现实意义.应用地理学、生态学以及遥感、GIS等多学科交叉与融合的原理与方法,研究气候变化与景观格局的特征与规律、气候变化与生态过程的耦合关系、景观格局与功能特征;分析景观格局、气候要素与生态系统中土壤、水文过程及植被过程的关系,气候变化对碳储量、NPP以及生态系统服务功能的影响,揭示气候变化对生态过程的影响规律.综合分析表明,气候要素影响生态安全的表现特征及其变化,景观格局是制约区域生态安全的基础,气候变化与景观格局对生态安全机制的影响具有复杂性.

Coupling relationship between climate change,landscape pattern and ecological security

The essence of ecological security focuses on ecological risk and ecological vulnerability,and the study of ecological security is the hot points of low-carbon green development,which has important theoretical value and practical significance for optimizing landscape ecological spatial structure and maintaining ecological sustainability.Based on the interdisciplinary principles and methods involved in geography,ecology,remote sensing and GIS,this paper studies the characteristics and laws of climate change and landscape pattern,the coupling relationship between climate change and ecological process,landscape pattern and functional properties.The relationship between landscape pattern,climate factors and soil,hydrological processes and vegetation processes in the ecosystem is analyzed,and the effects of climate change on carbon storage,NPP and ecosystem services are studied to reveal the impact of climate change on ecological processes.The comprehensive analysis shows that climate factors affect the characteristics and changes of ecological security.Meanwhile,landscape pattern is the basis of restricting regional ecological security,and the effects of climate change and landscape pattern on ecological security mechanism are complex.