Coastal wetlands are of paramount importance as major reservoirs of blue carbon(C),playing a crucial role in providing nature-based solutions to mitigate climatic changes.This research aimed to analyse the dynamics of...Coastal wetlands are of paramount importance as major reservoirs of blue carbon(C),playing a crucial role in providing nature-based solutions to mitigate climatic changes.This research aimed to analyse the dynamics of total blue C(TBC)and its components;viz.soil organic C(SOC),below ground C,and above ground C;as well how they are influenced by land use/land cover(LULC)categories and wetland situations.Subsequently,study were identified as one restored wetland and another degraded wetland in the Medinipur Coastal Plain,India.The LULC categories were analyzed using Pleiades 1A and 1B satellite imagery,corresponding to the restored and degraded wetland,respectively.The quantification of SOC was based on point-specific sample data collected from both wetlands(nr=250;nd=84).Above ground biomass(AGB)was appraised employing allometric relationships involving field-measured dendrometric variables.Below ground biomass values were calculated using indirect allometric equations that take into account the AGB values.Integrating all the components,TBC stock of the restored and degraded wetlands were estimated at 246710.91 Mg and 7865.49 Mg,respectively.In the restored wetland,dense mangrove and open mangrove exhibited higher concentrations of blue C components,while other LULC categories demonstrated moderate to low densities.In the degraded wetland,the open mangrove category rechigh densities of C pools,whereas herbaceous vegetation,bare earth and sand,and waterbody exhibited lower concentrations.The results portrayed significant disparities(P<0.05)in blue C pools among different LULC categories in both wetlands.Furthermore,it was evident that wetland type and LULC category had notable(P<0.001)impacts on TBC dynamics,both individually and in combination.Overall,this research may aid in effective management of coastal wetlands as blue C sinks,emphasizing their significance as essential elements of climate mitigation strategies.展开更多
法国中央高原是该国最大的山区,它具有欧洲各个类型山区的共同特点,即中等海拔(低于2000m),过去的经济仅依靠农业,而目前的旅游潜力非常有限。这些山区受到人口减少的严重影响,人口减少对当前景观转变的影响已超过了气候因素。日益增加...法国中央高原是该国最大的山区,它具有欧洲各个类型山区的共同特点,即中等海拔(低于2000m),过去的经济仅依靠农业,而目前的旅游潜力非常有限。这些山区受到人口减少的严重影响,人口减少对当前景观转变的影响已超过了气候因素。日益增加的森林和休闲地带来的负效应与目前的经济发展趋势相结合,正使这些山区成为边缘地带,并将这些地区重新带回到"野蛮的中世纪"。在欧洲中部的花岗岩地区,这种现象特别明显,因为在这里人们的生活和活动正受到越来越多的限制。相反,一些城市周围和更多的风景区,如中央高原的火山和Chaine des puys山的自然公园正吸引人们来旅游,从而限制了人口的减少。但是,对有吸引力的景观地区的保护面临两个问题:农业人口的减少和农业环境措施的费用。展开更多
基金The Early Career Research Award(ECR/2017/003380)The Project of Science and Engineering Research Board,Department of Science and Technology,Government of India(DST-SERB).
文摘Coastal wetlands are of paramount importance as major reservoirs of blue carbon(C),playing a crucial role in providing nature-based solutions to mitigate climatic changes.This research aimed to analyse the dynamics of total blue C(TBC)and its components;viz.soil organic C(SOC),below ground C,and above ground C;as well how they are influenced by land use/land cover(LULC)categories and wetland situations.Subsequently,study were identified as one restored wetland and another degraded wetland in the Medinipur Coastal Plain,India.The LULC categories were analyzed using Pleiades 1A and 1B satellite imagery,corresponding to the restored and degraded wetland,respectively.The quantification of SOC was based on point-specific sample data collected from both wetlands(nr=250;nd=84).Above ground biomass(AGB)was appraised employing allometric relationships involving field-measured dendrometric variables.Below ground biomass values were calculated using indirect allometric equations that take into account the AGB values.Integrating all the components,TBC stock of the restored and degraded wetlands were estimated at 246710.91 Mg and 7865.49 Mg,respectively.In the restored wetland,dense mangrove and open mangrove exhibited higher concentrations of blue C components,while other LULC categories demonstrated moderate to low densities.In the degraded wetland,the open mangrove category rechigh densities of C pools,whereas herbaceous vegetation,bare earth and sand,and waterbody exhibited lower concentrations.The results portrayed significant disparities(P<0.05)in blue C pools among different LULC categories in both wetlands.Furthermore,it was evident that wetland type and LULC category had notable(P<0.001)impacts on TBC dynamics,both individually and in combination.Overall,this research may aid in effective management of coastal wetlands as blue C sinks,emphasizing their significance as essential elements of climate mitigation strategies.
文摘法国中央高原是该国最大的山区,它具有欧洲各个类型山区的共同特点,即中等海拔(低于2000m),过去的经济仅依靠农业,而目前的旅游潜力非常有限。这些山区受到人口减少的严重影响,人口减少对当前景观转变的影响已超过了气候因素。日益增加的森林和休闲地带来的负效应与目前的经济发展趋势相结合,正使这些山区成为边缘地带,并将这些地区重新带回到"野蛮的中世纪"。在欧洲中部的花岗岩地区,这种现象特别明显,因为在这里人们的生活和活动正受到越来越多的限制。相反,一些城市周围和更多的风景区,如中央高原的火山和Chaine des puys山的自然公园正吸引人们来旅游,从而限制了人口的减少。但是,对有吸引力的景观地区的保护面临两个问题:农业人口的减少和农业环境措施的费用。
