Significant loss of soil inorganic carbon at the continental scale  

作　　者：Xiao-Dong Song Fei Yang Hua-Yong Wu Jing Zhang De-Cheng Li Feng Liu Yu-Guo Zhao Jin-Ling Yang Bing Ju Chong-Fa Cai Biao Huang Huai-Yu Long Ying Lu Yue-Yu Sui Qiu-Bing Wang Ke-Ning Wu Feng-Rong Zhang Ming-Kui Zhang Zhou Shi Wan-Zhu Ma Gang Xin Zhi-Ping Qi Qing-Rui Chang En Ci Da-Gang Yuan Yang-Zhu Zhang Jun-Ping Bai Jia-Ying Chen Jie Chen Yin-Jun Chen Yun-Zhong Dong Chun-Lan Han Ling Li Li-Ming Liu Jian-Jun Pan Fu-Peng Song Fu-Jun Sun Deng-Feng Wang Tian-Wei Wang Xiang-Hua Wei Hong-Qi Wu Xia Zhao Qing Zhou Gan-Lin Zhang 

机构地区：[1]State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Sciences,Nanjing 210008,China [2]College of Advanced Agricultural Sciences,University of Chinese Academy of Sciences,Beijing 100049,China [3]College of Resources and Environment,Huazhong Agricultural University,Wuhan 430070,China [4]Institute of Agricultural Resources and Regional Planning,Chinese Academy of Agricultural Sciences,Beijing 100081,China [5]College of Natural Resources and Environment,South China Agricultural University,Guangzhou 510642,China [6]Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences,Harbin 150081,China [7]College of Land and Environment,Shenyang Agricultural University,Shenyang 110161,China [8]School of Land Science and Technology,China University of Geosciences,Beijing 100083,China [9]College of Land Science and Technology,China Agricultural University,Beijing 100193,China [10]College of Environmental and Resource Sciences,Zhejiang University,Hangzhou 310058,China [11]Institute of Digital Agriculture,Zhejiang Academy of Agricultural Sciences,Hangzhou 310021,China [12]College of Agriculture,Heilongjiang Bayi Agricultural University,Daqing 163319,China [13]Tropical Crops Genetic Resources Institute,Chinese Academy of Tropical Agricultural Sciences,Haikou 571101,China [14]College of Natural Resources and Environment,Northwest A&F University,Yangling 712100,China [15]College of Resources and Environment,Southwest University,Chongqing 400715,China [16]College of Resources,Sichuan Agricultural University,Chengdu 611130,China [17]College of Resources and Environment,Hunan Agricultural University,Changsha 410128,China [18]Institute of Agricultural Product Quality Standard and Testing Research,Tibet Academy of Agricultural and Animal Husbandry Sciences,Lhasa 850032,China [19]School of Agricultural Sciences,Zhengzhou University,Zhengzhou 450001,China [20]Institute of Agriculture Environment and Resources Research,Shanxi Academy of Agricultural Sciences,Taiyuan 030006,

出　　处：《National Science Review》2022年第2期8-15,共8页国家科学评论（英文版）

基　　金：supported by the Second Tibetan Plateau Scientific Expedition and Research Program (2019QZKK0306);the National Key Research and Development Program of China(2018YFE0107000 and 2017YFA0603002);the S&T Basic Work Program of Ministry of Science and Technology of China(2008FY110600 and 2014FY110200);the National Natural Science Foundation of China (41771251)

摘　　要：Widespread soil acidification due to atmospheric acid deposition and agricultural fertilization may greatly accelerate soil carbonate dissolution and CO_(2) release.However,to date,few studies have addressed these processes.Here,we use meta-analysis and nationwide-survey datasets to investigate changes in soil inorganic carbon(SIC)stocks in China.We observe an overall decrease in SIC stocks in topsoil(0-30 cm)(11.33 g C m^(-2)yr^(-1))from the 1980s to the 2010s.Total SIC stocks have decreased by∼8.99±2.24%(1.37±0.37 Pg C).The average SIC losses across China(0.046 Pg C yr^(-1))and in cropland(0.016 Pg C yr^(-1))account for∼17.6%-24.0%of the terrestrial C sink and 57.1%of the soil organic carbon sink in cropland,respectively.Nitrogen deposition and climate change have profound influences on SIC cycling.We estimate that∼19.12%-19.47%of SIC stocks will be further lost by 2100.The consumption of SIC may offset a large portion of global efforts aimed at ecosystem carbon sequestration,which emphasizes the importance of achieving a better understanding of the indirect coupling mechanisms of nitrogen and carbon cycling and of effective countermeasures to minimize SIC loss.

关 键 词：China soil inorganic carbon stocks global change CARBONATE soil acidification 

分 类 号：S153.6[农业科学—土壤学]