Changes and driving forces analysis of carbon storage in coastal wetland of the Tianjin-Hebei region during 40 years
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 the changes in soil,vegetation,and wetland carbon storage within the Bohai Wetland Integrated Ecosystem due to industrial development and land use function transformation.This study showed that rational planning of water area patterns and adjustment of industrial structure are of great significance to the growth of carbon storage.Tianjin and Hebei regions should focus on the protection and restoration of ecological resources such as key coastlines and salt marsh tidal wetlands in Tianjin Binhai New Area,while promoting the marine related industries.
costal wetlandland use evolutionInVEST modelcarbon storagedriving forces
国家科技期刊平台
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