Estimation of Above-Ground Biomass Using HJ-1 Hyperspectral Images in Hangzhou Bay, China

This study demonstrates the potentials of HJ-1 hyperspectral sensor (110-128 bands)-based estimation of aboveground biomass in Hangzhou Bay Zhejiang Province, China. We coupled AGB values, calculated from field measurements of vegetation, with six different vegetation indices derived from HJ1 data through regression analyses to produce an initial biomass map. The results showed that above-ground biomass was strongly related to the soil adjusted vegetation index (SAVE; R = 0.909, p < 0.01). The mean value of estimated above-ground biomass in the study area is 34 Mg /ha, which was also validated using independent field measurements (R = 0.63, p < 0.01). This AGB maps can be used as baseline information for future landscape level studies such as quantifying the salt-marsh vegetation and monitoring management practices.