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Increased harvested carbon of cropland in China

Environmental research letters, 2024-05, Vol.19 (5), p.054036 [Peer Reviewed Journal]

2024 The Author(s). Published by IOP Publishing Ltd. This work is published under http://creativecommons.org/licenses/by/4.0 (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;EISSN: 1748-9326 ;DOI: 10.1088/1748-9326/ad3b20

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  • Title:
    Increased harvested carbon of cropland in China
  • Author: Ren, Peiyang ; Wang, Daju ; Xia, Xiaosheng ; Chen, Xiuzhi ; Qin, Zhangcai ; Wei, Jing ; Liu, Shuguang ; Mike O’Sullivan ; Yuan, Wenping
  • Subjects: Agricultural land ; Carbon budget ; Carbon cycle ; Carbon sequestration ; Carbon sinks ; Crop production ; cropland ; Crops ; Data comparison ; Datasets ; Ecosystem models ; Ecosystems ; Environment models ; Estimation ; harvested carbon ; Harvesting ; Statistics ; Temporal variations ; terrestrial ecosystem models ; Terrestrial ecosystems
  • Is Part Of: Environmental research letters, 2024-05, Vol.19 (5), p.054036
  • Description: Crop harvested carbon (HC) is one of the most important components of the carbon cycle in cropland ecosystems, with a significant impact on the carbon budget of croplands. China is one of the most important crop producers, however, it is still unknown on the spatial and temporal variations of HC. This study collected statistical data on crop production at the province and county levels in China for all ten crop types from 1981 to 2020 and analyzed the magnitude and long-term trend of harvested crop carbon. Our results found a substantial increase of HC in cropland from 0.185 Gt C yr−1 in 1981 to 0.423 Gt C yr−1 in 2020 at a rate of 0.006 Gt C yr−1. The results also highlighted that the average annual carbon sink removal from crop harvesting in China from 1981 to 2020 was 0.32 Gt C yr−1, which was comparable to the net carbon sink of the entire terrestrial ecosystems in China. This study further generated a gridded dataset of HC from 2001 to 2019 in China by using jointly the statistical crop production and distribution maps of cropland. In addition, a model-data comparison was carried out using the dataset and results from seven state-of-the-art terrestrial ecosystem models, revealing substantial disparities in HC simulations in China compared to the dataset generated in the study. This study emphasized the increased importance of HC for estimating cropland carbon budget, and the produced dataset is expected to contribute to carbon budget estimation for cropland ecosystems and the entire China.
  • Publisher: Bristol: IOP Publishing
  • Language: English
  • Identifier: EISSN: 1748-9326
    DOI: 10.1088/1748-9326/ad3b20
  • Source: Geneva Foundation Free Medical Journals at publisher websites
    Institute of Physics IOP eJournals Open Access
    ROAD: Directory of Open Access Scholarly Resources
    ProQuest Central
    DOAJ Directory of Open Access Journals
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