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Carbonate loss and resulting CO 2 emission from croplands: From incorrect calculations to overestimated predictions
Author(s) -
Guo Jingheng,
Chen Jingsheng
Publication year - 2021
Publication title -
global change biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 4.146
H-Index - 255
eISSN - 1365-2486
pISSN - 1354-1013
DOI - 10.1111/gcb.15477
Subject(s) - carbonate , environmental science , nitrogen , soil science , environmental chemistry , atmospheric sciences , chemistry , geology , organic chemistry
Based on a series of calculations, Raza et al. ( Global Change Biology , 26 , 3738–3751; 2020) predicted the acidification‐induced soil carbonate loss and subsequent CO 2 emission from Chinese croplands. We argue that their predictions may be substantially overestimated due to three reasons: (1) incorrect calculation of ( H N + ; i.e., N‐induced proton production) and thereby overestimated soil carbonate loss; (2) extended area of calcareous soil; and (3) overestimated proportion of CO 2 emission in carbonate loss from calcareous soil.