AUTHOR=Wan Rongrong , Wang Peng , Wang Xiaolong , Yao Xin , Dai Xue 

TITLE=Mapping Aboveground Biomass of Four Typical Vegetation Types in the Poyang Lake Wetlands Based on Random Forest Modelling and Landsat Images

JOURNAL=Frontiers in Plant Science

VOLUME=10

YEAR=2019

URL=https://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2019.01281

DOI=10.3389/fpls.2019.01281

ISSN=1664-462X

ABSTRACT=<p>Wetland biomass is an important indicator of wetland ecosystem health. In this study, four dominant vegetation communities (<italic>Carex cinerascens</italic>, <italic>Phalaris arundinacea</italic>, <italic>Artemisia selengensis</italic>, and <italic>Miscanthus sacchariflorus</italic>) in the Poyang Lake wetland from 2010 to 2016 were classified from Landsat images using spectral information divergence (SID). We combined aboveground biomass (AGB) field measurements and remote sensing data to establish a suitable model for estimating wetland AGB in Poyang Lake, which is on the Ramsar Convention’s list of Wetlands of International Importance. The results showed that (1) overall, the classification accuracy for vegetation pixels across 5 years ranged from 59.1% to 73.7% and (2) the inter-annual and spatial variations in the AGB of the four vegetation types were clear. <italic>C. cinerascens</italic> had an average AGB density value of 1.28 kg m<sup>−2</sup> in Poyang Lake from 2010 to 2016; <italic>M. sacchariflorus </italic>had the highest AGB density with an average value of 1.39 kg m<sup>−2</sup>; <italic>A. selengensis</italic> had almost the same level at 1.26 kg m<sup>−2</sup>; and <italic>P. arundinacea</italic> had the lowest AGB density at 0.64 kg m<sup>−2</sup>. This study provides useful experience for estimating carbon sequestration of vegetation in freshwater wetlands.</p>