Remote sensing based estimation of Phragmites australis aboveground biomass in Shuangtai Estuary National Nature Reserve
LIANG Jianping1,2, MA Daxi1, MAO Dehua2, WANG Zongming2
1. Jiangxi University of Science and Technology, Ganzhou 341000, China;
2. Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
With the object-oriented classification method, the spatial distribution of Phragmites australis was obtained based on multi-temporal Landsat8 OLI data covering Shuangtai Estuary National Nature Reserve. By analyzing the sensitivity between different vegetation indexes and aboveground biomass (AGB) of Phragmites australis, the retrieval model of AGB for Phragmites australis was developed. Furthermore, the spatial pattern of AGB for Phragmites australis was observed. The results showed that the area of Phragmites australis was 4.39×104 hm2, accounting for 32.96% of the study area of the Shuangtai Estuary National Nature Reserve. Selecting NDVI as the variable for the power function, the authors formulated the optimal model for estimating AGB of Phragmites australis with an estimation accuracy of 79%. Average AGB of Phragmites australis was 4785.5 g/m2 and total AGB was 2.06×106 t. High values of AGB were observed in the northeast part, while low AGB values in the southwest. The results obtained in this study would provide data to support wetland ecosystem management and scientific guidance for Shuangtai Estuary National Nature Reserve.
梁建平, 马大喜, 毛德华, 王宗明. 双台河口国际重要湿地芦苇地上生物量遥感估算[J]. 国土资源遥感, 2016, 28(3): 60-66.
LIANG Jianping, MA Daxi, MAO Dehua, WANG Zongming. Remote sensing based estimation of Phragmites australis aboveground biomass in Shuangtai Estuary National Nature Reserve. REMOTE SENSING FOR LAND & RESOURCES, 2016, 28(3): 60-66.
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