A large carbon sink induced by the implementation of the largest afforestation program on Earth
作者机构：Qingyuan Forest CERN CAS Key Laboratory of Forest Ecology and Management Institute of Applied Ecology Chinese Academy of Sciences Key Laboratory of Ecology and Management of Non-Commercial Forests Department of Forestry and Environmental Conservation Clemson University Academy of Forestry-Grassland Inventory and Planning
出 版 物：《Ecological Processes》 (生态过程(英文))
年 卷 期：2023年第12卷第3期
页 面：162-171页
核心收录：
学科分类：0907[农学-林学] 07[理学] 09[农学] 0903[农学-农业资源与环境] 0901[农学-作物学] 0713[理学-生态学]
基 金：supported by grants from National Key R&D Program of China (2020YFA0608100) CAS Key Research Program of Frontier Sciences (QYZDJ-SSW-DQC027) National Natural Science Foundation of China (31025007) the Knowledge Innovation Program of Chinese Academy of Sciences (KZCX1-YW-08-02) the Consultation Project supported by Divisions of the Chinese Academy of Sciences (2019-ZW09-A-032)
主 题：Three-North Afforestation Program Carbon sequestration Ecological restoration Carbon sequestration benefited from the ecological effects
摘 要：Background Three-North Afforestation Program（TNAP） in China is the largest ecological restoration project on Earth（ongoing from 1978 to 2050）, harboring a huge area of newly planted forests, which provides a wealth of goods and ecosystem services that benefit society at levels ranging from region to East Asia. This project-induced carbon（C） sink has been expected to be large, but its size and location remain *** In this study, we investigated the changes in the C stocks of biomass, soil C and the C accumulation benefited from the ecological effects in the project areas from 1978 to 2017 within the Three-North regions（4.069 × 10～6 km2）, and evaluated its project-induced C sequestration. Using a combination of remote sensing images, field observations and national forest inventory data, we estimated a total ecosystem sink of 47.06 Tg C per year(1 Tg = 1012g) increased by the TNAP implementation. Importantly, we first found that the C sink via the ecological effects of this project could contribute to a high proportion up to 15.94%, indicating a critical role of ecological effects in shaping the distribution of C stocks in the protective forests. This finding suggests that it is necessary to explicitly consider carbon sequestration benefited from the ecological effects when estimating C sink and parameterizing C models of the restoration projects in China and *** Our results update the estimates of C pools in the world s largest ecological restoration project area, demonstrating that this project has substantially contributed to mitigating the climate change.
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