Updated estimation of forest biomass carbon pools in China, 1977–2018
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Published:2022-06-21
Issue:12
Volume:19
Page:2989-2999
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ISSN:1726-4189
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Container-title:Biogeosciences
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language:en
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Short-container-title:Biogeosciences
Author:
Yang ChenORCID, Shi Yue, Sun Wenjuan, Zhu Jiangling, Ji Chengjun, Feng Yuhao, Ma Suhui, Guo Zhaodi, Fang Jingyun
Abstract
Abstract. China is one of the major forest countries in the world,
and the accurate estimation of its forest biomass carbon (C) pool is
critical for evaluating the country's C budget and ecosystem services of
forests. Although several studies have estimated China's forest biomass
using national forest inventory data, most of them were limited to the
period of 2004–2008. In this study, we extended our estimation to the most
recent period of 2014–2018. Using datasets of eight inventory periods from
1977 to 2018 and the continuous biomass expansion factor method, we
estimated that the total biomass C pool and average biomass C density in
Chinese forests increased from 4717 Tg C (1 Tg = 1012 g) in the
period of 1977–1981 to 7975 Tg C in the period of 2014–2018 and 38.2 Mg C ha−1 to 45.8 Mg C ha−1 (1 Mg = 106 g), respectively, with a
net increase of 3258 Tg C and an annual sink of 88.0 Tg C yr−1. Over
the most recent 10 years (2009–2018), the average national forest biomass C
density and C sink were 44.6 Mg C ha−1 and 154.8 Tg C yr−1,
respectively, much larger than those of 39.6 Mg C ha−1 and 63.3 Tg C yr−1 in the period 1977–2008. These pronounced increases were largely
attributed to afforestation practices, forest growth, and environmental
changes. Our results have documented the importance of ecological
restoration practices, provided an essential basis for assessing ecosystem
services, and helped to achieve China's C neutrality target.
Funder
National Natural Science Foundation of China
Publisher
Copernicus GmbH
Subject
Earth-Surface Processes,Ecology, Evolution, Behavior and Systematics
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