Paper Info
Title
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.
Year
DOI
Venue
2020
10.3390/rs12183000
REMOTE SENSING
Keywords
DocType
Volume
herbaceous wetlands,vegetation carbon sequestration,enhanced vegetation index time series,Poyang Lake wetland
Journal
12
Issue
Citations 
PageRank 
18
0
0.34
References 
Authors
0
4
Name
Order
Citations
PageRank
Xue Dai100.34
Guishan Yang200.34
Desheng Liu3244.82
Rongrong Wan400.68