干旱区地理2025，Vol.48Issue(11)：1995-2004,10.DOI:10.12118/j.issn.1000-6060.2024.709
基于生态位与Lotka-Volterra模型的内蒙古生态安全状况研究
Ecological security status of Inner Mongolia based on ecological niche and the Lotka-Volterra model
摘要
Abstract
Ecological security is a key component of national security.It is very important to scientifically assess the state of ecological security to optimize the scientific management of regional ecosystems,enhancing ecologi-cal conservation and promoting high-quality development.This study constructs an ecological security evaluation index system based on the driving forces-pressures-state-impacts-responses(DPSIR)framework,introduces the ecological niche width into the Lotka-Volterra model,and uses the center-of-gravity standard deviation ellipse analysis,radar charts,and trend surface analysis to identify the temporal and spatial characteristics of ecological security in Inner Mongolia of China,as well as the trade-off relationship between the ecological and economic systems,from 2012 to 2023.The findings indicate the following:(1)The ecological security situation in Inner Mongolia showed an overall improvement from 2012 to 2023.The type of ecological security gradually shifted from red-risk to blue sub-security,with the proportion of safe areas increasing from 16.67%in 2012 to 25.00%in 2023 and the proportion of dangerous areas decreasing from 33.33%in 2012 to 0%in 2023.The level of ecologi-cal and economic symbiosis showed an upward trend.(2)In terms of spatial distribution of safety,the number of red-risk leagues and cities has decreased across the eastern,central,and western regions Inner Mongolia.By 2023,all regions had transitioned to at least the sensitive zone or higher,predominantly distributed in recovery and safe zones.Both Alagxa League in the west and Hulun Buir City in the east showed significant fluctuations,indicating unstable ecological security.(3)The ecological security center of gravity witnessed a trend of migra-tion from the northeast to the southwest.Likewise,the ecological security standard deviation ellipse also exhibit-ed an evolution trend,first expanding to the northeast and then becoming concentrated in the southwest.(4)The ecological niche widths of economic and ecological systems were relatively high in the central leagues and cities,with a good overall symbiotic condition between ecology and economy,with the ecological and economic sys-tems of the eastern and western leagues being still in a competitive state,where the symbiosis between systems re-quires further improvement.These findings provide actionable insights for the optimization of ecological security governance in Inner Mongolia,and they offer an important reference value for assessments of ecological vulnera-bility in analogous regions nationwide.关键词
生态位/Lotka-Volterra模型/生态安全/内蒙古Key words
ecological niche/Lotka-Volterra model/ecological security/Inner Mongolia引用本文复制引用
李雪敏,王菲菲,武振国,张耘恺,潘越明..基于生态位与Lotka-Volterra模型的内蒙古生态安全状况研究[J].干旱区地理,2025,48(11):1995-2004,10.基金项目
国家自然科学基金项目(42461045) （42461045）
教育部人文社会科学研究青年项目(24YJCZH152) （24YJCZH152）
内蒙古自然科学基金项目(2023QN0-7010) （2023QN0-7010）
内蒙古社会科学院2025重大课题(WD202501) （WD202501）
内蒙古直属高校基本科研业务费项目(NCYWT25049)资助 （NCYWT25049）
