固碳服务供需视角下大别山水土保持生态功能区碳平衡研究  

Research on carbon balance in the soil conservation ecological function zone of dabie mountains and rivers from the perspective of carbon fixation service supply and demand

作　　者：刘瞳晖 郜彗 宋旭铭 张迁 LIU Tonghui;GAO Hui;SONG Xuming;ZHANG Qian(School of Geographic Sciences,Xinyang Normal University,Xinyang,Henan 464000,China;Henan Key Laboratory for Synergistic Prevention of Water and Soil Environmental Pollution,Xinyang Normal University,Xinyang,Henan 464000,China)

机构地区：[1]信阳师范大学地理科学学院,河南信阳464000 [2]信阳师范大学河南省水土环境污染协同防治重点实验室,河南信阳464000

出　　处：《内江师范学院学报》2024年第10期69-76,85,共9页Journal of Neijiang Normal University

基　　金：国家自然科学基金项目(41701637);河南省科技发展计划项目(242400411062);河南省教育厅人文社科项目(2023-ZDJH-134);信阳生态研究院开放基金项目(2023XYMS14);河南省高等学校青年骨干教师资助计划项目(2019GGJS161)。

摘　　要：以大别山水土保持生态功能区为例,运用InVEST模型、IPCC清单法和人口密度法分别计算碳供给量和需求量,探究2000-2020年区域碳平衡的时空变化特征.结果表明:研究时段内土地利用转移主要从耕地等碳密度较低的地类转移为林地等碳密度较高的地类;固碳服务总供给量高于总需求量,在空间存在错配关系,呈现出中东部盈余,西部赤字的态势,碳平衡表现为整体向好、局部恶化的空间格局.固碳服务供给与高程、降水相关性最强,固碳服务需求与人口密度、GDP相关性最强.研究结果可为研究区未来土地利用空间优化及“双碳”目标的实现提供参考.Using the Dabieshan Mountains and Soil Conservation Ecological Function Area as a case study,this research examines the spatio-temporal variations in regional carbon balance from 2000 to 2020.The InVEST model is employed to quantify carbon sequestration services,while the IPCC list method and population density method are utilized for assessment.The findings reveal that land use changes within the study area during the specified period exhibit significant local alterations but insignificant overall modifications.The total supply of carbon sequestration services exceeds the total demand,with woodland areas characterized by minimal human activities serving as high-value regions for carbon supply.Conversely,construction land associated with robust economic activities represents high-value areas for carbon demand.A spatial mismatch is observed in terms of carbon sequestration services,indicating surplus conditions in central and eastern regions alongside deficits in western regions.Carbon balance demonstrates an overall improvement pattern combined with localized deterioration tendencies.Elevation and precipitation display strong correlations with the provision of carbon sequestration services,whereas population density and GDP show close associations with demand levels.These outcomes provide valuable insights for future spatial optimization of land use practices and achieving dual-carbon goals within this specific study area.

关 键 词：固碳服务 碳平衡 生态系统服务供需关系 InVEST模型 大别山水土保持生态功能区 

分 类 号：X836[环境科学与工程—环境工程]