High-resolution maps of above- and belowground woody biomass in China from 2003 to 2020,Earth System Science Data

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High-resolution maps of above- and belowground woody biomass in China from 2003 to 2020
Earth System Science Data ( IF 11.4 ) Pub Date : 2022-09-26 , DOI: 10.5194/essd-2022-286
Yongzhe Chen , Xiaoming Feng , Bojie Fu , Haozhi Ma , Constantin M. Zohner , Thomas W. Crowther , Yuanyuan Huang , Xutong Wu , Fangli Wei

Abstract. To quantify the ecological consequences of recent nation wide restoration efforts in China, spatially explicit information on woody biomass changes over the 21^st century is critical However, long term biomass tracking at the national scale remains challenging as it requires continuous and high resolution monitoring . Here, we mapped above and belowground biomass (AGB and BGB) for woody vegetation in China between 2003 and 2020 at 1 km spatial resolution by integrating multiple types of remote sensing observations with intensive field plot measurements through machine learning and mixed pixel decomposition methods On average, 11.0 ± 0.7 and 2.8 ± 0.2 PgC are stored in above and belowground live woody biomass in China. Over the last 18 years , the total woody biomass carbon in China has increased at a rate of 163.8 TgC yr^-1 (0.5 % yr^-1). T he most pronounced biomass gains occurred in central to south ern China, including the southern Loess Plateau, Qinling Mountains, southwest karst and southeast forest s . T he combined use of low frequency (L-band , microwaves and laser remote sensing data provides a powerful tool to minimize under or overestimation of biomass variation in space and time Future research is needed to explore the drivers of the observed woody biomass trends , and to evaluate the degree to which biomass gains will translate into biodiverse, healthy ecosystems and thus are sustainable.

更新日期：2022-09-26

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