摘要
采矿活动破坏生态环境,导致土地资源固碳能力减弱或丧失.构建形成矿区损毁土地的生态修复与碳增汇协同技术模式,对于指导“双碳”目标下的采煤沉陷区生态修复工程具有重要意义.以李一矿采煤沉陷区为淮南典型资源枯竭研究矿区,采用样地清查,碳储、碳汇、碳收支模型构建的方法,旨在查明淮南李一矿典型采煤沉陷区生态系统碳储量特征、碳收支状况及碳增汇潜力,进而提出适合淮南典型采煤沉陷区生态系统碳增汇的生态修复模式.研究结果表明:淮南李一矿典型采煤沉陷区生态系统植被分布较单一、碳排放量较大、碳储量较低、碳汇能力较弱.现状下李一矿典型采煤沉陷区生态系统碳储量为2.4456万t,年碳排放量为30.32 t;若将用于重新利用的荒废耕地和建筑拆除场地(目前状态为草地)改造为林地,李一矿典型采煤沉陷区生态系统稳定后的碳储量将为3.9177万t,年碳排放量将为-5.14 t,产生碳吸收效应;若将其改造为耕地,则李一矿典型采煤沉陷区生态系统稳定后的碳储量为3.9177万t,年碳排放量将增加到62.83 t.对比分析发现林地在矿区生态系统碳汇功能的提升中尤为重要,不仅可降低矿区碳排放量,还能增加生态系统碳储量.“基于土地利用类型的整体规划协同生态系统要素碳汇功能提升”的“点—面协同增汇模式”对于分布范围广、土地碳库损毁严重的采煤沉陷区生态修复与碳增汇的协同治理具有重要指导意义.
Mining activities destroy the ecological environment and lead to the weakening or loss of carbon sequestration capacity of land resources.Therefore,it is of great significance to guide the ecological restoration project of coal mining subsidence area under the goal of“dual carbon”to construct the cooperative technology model of ecological restoration and carbon sink enhancement of damaged land in mining area.Taking the coal mining subsidence area of Liyi Coal Mine in Huainan as a typical resource depletion research area,this study adopts the method of sample plot inventory,carbon storage,carbon sink and carbon budget model construction,aiming to find out the characteristics of carbon storage,carbon budget and carbon sink potential of ecosystem in typical coal mining subsidence area of Liyi Coal Mine in Huainan,and then put forward the ecological restoration model suitable for carbon sink of ecosystem in typical coal mining subsidence area of Huainan.The research results indicate that the vegetation distribution in the typical coal mining subsidence area of Liyi Mine in Huainan is relatively single,characterized by high carbon emissions,low carbon storage,and a diminished capacity for carbon sequestration.Under the current situation,the ecological carbon storage in the typical coal mining subsidence area of Liyi Mine is 244.56 million tons,with annual carbon emissions amounting to 30.32 tons.If the abandoned farmland and building demolition sites(currently grassland)used for reuse are transformed into forest land,the stable carbon storage of the ecosystem in the typical coal mining subsidence area of Liyi Mine will be 391.77 million tons,and the annual carbon emissions will be-5.14 tons,generating a carbon absorption effect.If it is converted into farmland,the carbon storage of the typical coal mining subsidence area ecosystem in Liyi Mine will be 391.77 million tons after stabilization,and the annual carbon emissions will increase to 62.83 tons.Comparative analysis shows that forest land is particularly crucial in improving the carbon sequestration function of the mining area ecosystem.It can effectively reduce the carbon emissions of the mining area and simultaneously increase the carbon storage of the ecosystem.The study proposes a“point-to-point collaborative carbon sequestration mode”based on the overall planning of land use types and the enhancement of carbon sequestration functions of ecosystem elements.This mode is of importance to guide the collaborative governance of ecological restoration and carbon sequestration in coal mining subsidence areas that are extensively distributed and characterized by severe land carbon reservoir damage.
作者
郭玉良
刘世奇
桑树勋
陈伟伟
张芮
王庆刚
曹银南
滕鸿博
贠宇春
丁映红
GUO Yuliang;LIU Shiqi;SANG Shuxun;CHEN Weiwei;ZHANG Rui;WANG Qinggang;CAO Yinnan;TENG Hongbo;YUN Yuchun;DING Yinghong(Jiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization,Xuzhou 221008,China;Carbon Neutrality Institute,China University of Mining and Technology,Xuzhou 221008,China;School of Resources and Geosciences,China University of Mining and Technology,Xuzhou Jiangsu,221116;China Huainan Mining Industry(Group)Co.,Ltd.,Huainan 232001,China;State Key Laboratory of Deep Coal Mining&Environment Protection,Huainan 232001,China;National Engineering Laboratory for Protection of Coal Mine Eco-Environment,Huainan 232001,China)
出处
《西安建筑科技大学学报(自然科学版)》
北大核心
2025年第1期50-59,共10页
Journal of Xi'an University of Architecture & Technology(Natural Science Edition)
基金
国家自然科学基金(42141012)
江苏省卓越博士后计划(2023ZB693)
中央高校基本科研业务费专项资金(2023KYJD1001)
中央高校基本科研业务费专项资金(2023QN1070)。
关键词
淮南
采煤沉陷区
碳收支
碳储量
碳增汇
修复模式
Huainan
coal mining subsidence area
carbon balance
carbon storage
carbon sequestration
restoration mode
作者简介
第一作者:郭玉良(1992-),男,博士,博士后,主要研究碳中和地质技术.E-mail:guoyuliang@cumt.edu.cn;通信作者:刘世奇(1984-),男,博士,博士生导师,研究员,主要研究碳中和地质技术.E-mail:liushiqi@cumt.edu.cn。
