中国农业大学学报2025，Vol.30Issue(3)：218-231,14.DOI:10.11841/j.issn.1007-4333.2025.03.20
三江源地区生态承载力时空动态评价及分区研究
Spatiotemporal dynamic evaluation and regional division research of ecological carrying capacity in the Three Rivers Source region
摘要
Abstract
To promote the sustainable development of the ecological environment in the ecologically fragile area,this study took the Three Rivers Source region as the research object.The comprehensive index method was adopted to construct an evaluation model of the ecological carrying capacity of the Three Rivers Source region from the three dimensions of stability,support and pressure.The ecological carrying capacities of the Three Rivers Source region in 2010 and 2020 were determined and regional control analysis was carried out.The results show that:1)From the single dimension of stability,the stability of the Three River Source water area decreases,the stability of glaciers slightly increases while the range shrinks,and the NDVI of grasslands slightly increases while the range shrinks;From the perspective of support,there is an increase in source conservation and soil conservation,but the habitat quality slightly decreases;From the perspective of bearing capacity,the theoretical carrying capacity of grasslands in the Three Rivers Source area has decreased.2)Overall,the ecological carrying capacity of the Three Rivers Source decreased by 3％in 2020 compared to 2010,with degradation and rapid degradation areas accounting for about 41％.The ecological carrying capacity of the Three Rivers Source urgently needs to be improved.3)Based on the comprehensive evaluation results of the ecological carrying capacity of the Three Rivers Source,the ecological carrying capacity can be divided into four different regions.Among them,the Type I region has the worst ecological carrying capacity,and special attention should be paid to the issue of glacier stability;Type Ⅱ regions have relatively stable ecological carrying capacity and are the most widely distributed regions;Type Ⅲ regional grasslands have higher stability and lower habitat quality;Type IV areas are important river and lake protection areas.The strategies for improving the carrying capacity of different functional regions are different.Therefore,the improvement strategies should align with different carrying capacity levels.The Three Rivers Source region must focus on targeted restoration and management,and implement measures tailored to each area's ecological characteristics and capacity.关键词
综合指数法/生态承载力/空间分区/生态脆弱区/三江源Key words
synthetical index method/ecological carrying capacity/spatial zoning/ecologically fragile areas/Three Rivers Source region分类
天文与地球科学引用本文复制引用
王守兴,周翼,杨明新,李成先,宁晓春,王雁鹤,谷强,魏代军,刘晓洁..三江源地区生态承载力时空动态评价及分区研究[J].中国农业大学学报,2025,30(3):218-231,14.基金项目
中国地质调查项目(DD20220959) （DD20220959）
中国地质调查局自然资源综合调查指挥中心科技创新基金项目(KC20220018) （KC20220018）
