生态环境学报2024，Vol.33Issue(11)：1672-1685,14.DOI:10.16258/j.cnki.1674-5906.2024.11.002
洞庭湖生态经济区国土空间格局演变的碳储量效应及驱动因素研究
Research on the Carbon Storage Effect and Driving Factors of the Evolution of Territorial Space Pattern in Dongting Lake Ecological and Economic Zone
摘要
Abstract
Territorial space is the spatial carrier for the construction of ecological civilization,and revealing the effect of ecosystem carbon stock on the evolution of regional territorial space patterns is of great significance for the optimization and control of regional territorial space patterns and the realization of the goal of the"dual-carbon"strategy.Taking the Dongting Lake Ecological and Economic Zone as an example,this study revealed the ecosystem carbon storage effect and the driving factors of the spatial differentiation of carbon storage in the evolution of regional territorial space patterns by analyzing the characteristics of the evolution of regional territorial space patterns from 1990 to 2020 and applying the InVEST model,contribution rate of carbon storage in the territorial space,potential impact index,and optimal parameter geographical detector.The results showed that 1)from 1990 to 2020,the territorial space type of the Dongting Lake Ecological and Economic Zone was dominated by agricultural production space and forest ecological space,with the area of the two accounting for more than 75%of the total study area.During the study period,there was a significant difference in the dynamic degree of the different territorial space types,which was generally manifested as the shrinkage of agricultural production spaces and grassland ecological space,as well as the expansion of industrial and mining production spaces and urban living spaces.2)From 1990 to 2020,the carbon storage in Dongting Lake Ecological and Economic Zone showed a fluctuating decreasing trend,with a total decrease of 8.58×106 t in the past 30 years,and the mutual transformation between the agricultural production space,the ecological space of watersheds,and the ecological space of forests is the main reason for the change of carbon stock;the regional carbon storage as a whole showed a spatial distribution pattern of"high in the west,southwest and southeast,and low in the central and northeastern parts".The evolution of the territorial space pattern had a positive potential impact on the services of carbon stock in the region;the positive potential impact weakened and the vulnerability of the services of carbon storage decreases.3)The spatial and temporal variability of carbon storage in the Dongting Lake Ecological and Economic Zone from 1990 to 2020 was the result of the combined effects of natural and socioeconomic factors.Habitat quality and elevation were the main driving factors,and the interactions among the driving factors showed two-factor nonlinear enhancement.The results of this study can provide theoretical support for the optimization of territorial space patterns and the enhancement of carbon sequestration capacity in the Dongting Lake Ecological and Economic Zone.关键词
国土空间格局/演变特征/碳储量效应/驱动因素/洞庭湖生态经济区Key words
Territorial space pattern/evolutionary characteristics/carbon storage effect/driving factors/Dongting Lake Ecological and Economic Zone分类
资源环境引用本文复制引用
罗光浴,王志远..洞庭湖生态经济区国土空间格局演变的碳储量效应及驱动因素研究[J].生态环境学报,2024,33(11):1672-1685,14.基金项目
湖南省自然科学基金项目(2023JJ31012) （2023JJ31012）
湖南省教育厅科学研究项目优秀青年项目(23B0246) （23B0246）
