Vegetation Carbon Sequestration Mapping in Herbaceous Wetlands by Using a MODIS EVI Time-Series Data Set: A Case in Poyang Lake Wetland, China

Abstract

The carbon sequestration capacity of wetland vegetation determines carbon stocks and changes in wetlands. However, modeling vegetation carbon sequestration of herbaceous wetlands is still problematic due to complex hydroecological processes and rapidly changing biomass carbon stocks. Theoretically, a vegetation index (VI) time series can retrieve the dynamic of biomass carbon stocks and could be used to calculate the cumulative composite of biomass carbon stocks during a given interval, i.e., vegetation carbon sequestration. Hence, we explored the potential for mapping vegetation carbon sequestration in herbaceous wetlands in this study by using a combination of remotely sensed VI time series and field observation data. This method was exemplarily applied for Poyang Lake wetland in 2016 by using a 16-day Moderate Resolution Imaging Spectroradiometer (MODIS) enhanced vegetation index (EVI) time series. Results show that the vegetation carbon sequestration in this area was in the range of 193–1221 g C m−2 year−1 with a mean of 401 g C m−2 year−1 and a standard deviation of 172 g C m−2 year−1 in 2016. The approach has wider spatial applicability in wetlands than the currently used global map of vegetation production (MOD17A3) because our carbon estimation in areas depicted by ‘no data’ in the MOD17A3 product is considerable, which accounts for 91.2–91.5% of the total vegetation carbon sequestration of the wetland. Thus, we determined that VI time series data shows great potential for estimating vegetation carbon sequestration in herbaceous wetlands, especially with the continuously improving quality and frequency of satellite VI images.

Estimation of the Carbon Sequestration Dynamics of Senegal’s Great Green Wall Based on Land Cover over the Past Three Decades

“…The results of the organic carbon storage estimation in GGW Senegalese soils show an upward dynamic in carbon sequestration for the reforested sites of Syer, Tessekere (Louga), Loughere-Thioly (Matam) and a loss capacity to store carbon on non-reforested sites (case of Ballou in Tambacounda region) over the period 1992-2020. Other works ( [17] [50]) had shown a positive dynamic of reforested sites based on vegetation indices (NDVI and VHI). The results of these studies reinforce ours on the positive dynamics of carbon sequestration observed in the different reforested soils of the GGW.…”

Land Use/Cover Dynamics and Associated Impacts on Eutrophication, Land Surface Temperature, and Ecosystem Service Values: An Eco-Climatological Investigation of Chilika Lake, India.

“…Carbon sequestration is observed as the process of determining the amount of carbon released as it indicates the changes reflected in the ecosystem. With the help of vegetation indices, it will help find the vegetation carbon sequestration (Dai et al 2020).…”

Estimation of aboveground biomass and carbon in palustrine wetland using bands and multispectral indices derived from optical satellite imageries PlanetScope and Sentinel-2A

“…About 10 VIs (Table 2) were analyzed as predictor variables for AGB and Corg. Among the VIs, NDVI is often used to estimate vegetation biomass in wetlands 33,67 and in studies related to photosynthesis, carbon stocks, water balance, and other plant-related processes. This VI is sensitive to green leaf vegetation and photosynthetically active radiation.…”