1980-2020年津冀滨海湿地碳储量演变特征及驱动因素  

Changes and driving forces analysis of carbon storage in coastal wetland of the Tianjin-Hebei region during 40 years

作　　者：蔡雅静 刘瑞志[1,2] 王丽平 徐秀丽[3] 刘任红 CAI Yajing;LIU Ruizhi;WANG Liping;XU Xiuli;LIU Renhong(Chinese Research Academy of Environmental Sciences,the State Key Laboratory for Estuarine and Costal Environmental Protection,Beijing 100012,China;Guangxi Field Scientific Observation and Research Station of Marine Ecological Environment,Guangxi Zhuang Autonomous Region 535011,China;China University of Geosciences,Beijing 100083,China)

机构地区：[1]中国环境科学研究院国家环境保护河口与海岸带环境重点实验室,北京100012 [2]北部湾海洋生态环境广西野外科学观测研究站,北海535011 [3]中国地质大学海洋学院,北京100083

出　　处：《环境工程学报》2024年第10期2697-2707,共11页Chinese Journal of Environmental Engineering

基　　金：中央级公益性科研院所基本科研业务费(2022YSKY-16);北部湾海洋生态环境广西野外科学观测研究站(科研能力建设)(桂科23-026-271)。

摘　　要：津冀地区处于环渤海的中心位置,滨海湿地资源丰富,具有高固碳能力。随着津冀地区经济规模发展,滨海湿地退化显著,明晰滨海湿地碳储量演化模式和驱动因素对实现该地区“碳中和”与经济社会可持续发展共赢具有重大意义。本研究基于近40年津冀土地利用、社会经济等数据,利用GIS、InVEST模型等方法分析津冀地区1980—2020年土地利用的变化情况及滨海湿地碳储量时空演变规律;评估土地利用变化对碳储量的影响;辨析碳储量演变的关键驱动因素。结果表明,1980—2020年津冀滨海湿地面积减少31%,变化最大区域为天津市滨海新区;滨海湿地碳储量减少46.5%,其中盐沼的碳储量由6.274 Tg下降至3.796 Tg,滩涂碳储量由0.714 Tg下降至0.335 Tg。从碳储量变化贡献率角度分析可得水域格局的演变对滨海湿地碳储量变化的影响最大,水域对滨海实地碳储量变化贡献率为10.2;滨海湿地碳储量受自然与人为因素共同驱动,人为因素中第一产业是影响碳储量的主要驱动因素,地区产业结构调整对碳储量的影响重大。本研究明确环渤海滨海湿地一体化生态系统内部因产业结构调整和土地利用功能转型后土壤、植被及湿地碳储量变化,表明合理规划水域格局及调整产业结构对碳储量增长具有重大意义,津冀地区应重点关注天津滨海新区重点岸线和盐沼滩涂湿地等生态资源的保护修复,同时推进海洋科技渔业的转型发展。The Tianjin-Hebei region is located at the heart of the Bohai Rim.The area is rich in coastal wetland resources and possesses a significant capacity for carbon sequestration.As the Tianjin-Hebei region undergoes economic development,coastal wetlands have faced a significant degradation.Clarifying the evolution model and driving factors of carbon storage in coastal wetlands is of great significance to achieve a win-win situation between“carbon neutrality”and sustainable economic and social development in the region.This research was based in data covering the past 40 years of land use,socioeconomic factors,and other relevant data from the Tianjin and Hebei regions.GIS,the InVEST model,and numerous analytical methods were utilized to investigate the land use changes striking in the Tianjin and Hebei areas from 1980 to 2020,also the spatiotemporal evolution of coastal wetland carbon storage.Furthermore,the impact of land use changes on carbon stocks and identifies basic factors driving the evolution of carbon stocks was evaluated.Results showed that the area of coastal wetlands in Tianjin and Hebei decreased by 31%between 1980 and 2020,with the major change occurring in the Tianjin Binhai New Area.Additionally,the carbon storage of coastal wetlands dropped by 46.5%,notably with the carbon storage of salt marshes decreasing from 6.274 Tg to 3.796 Tg,and the carbon storage of tidal flats declining by 31%.Reserves dropped from 0.714 Tg to 0.335 Tg.Investigating the carbon storage change contribution rate,the evolution of water area patterns poses significant impact on changes in coastal wetland carbon storage.Particularly,the contribution rate of water areas to coastal on-site carbon storage change is 10.2.In addition,coastal wetland carbon storage was affected by human and natural factors.Among human factors,China’s primary industry emerged as the main factor affecting carbon reserves.Furthermore,the adjustment of regional industrial structure revealed a significant impact on carbon reserves.This study clarified

关 键 词：滨海湿地 土地利用演变 InVEST模型 碳储量 驱动因素 

分 类 号：X21[环境科学与工程—环境科学]