caa a22 4500 606219935 CHVBK 20210128101121.0 cr unu---uuuuu 210128e20150901xx s 000 0 eng 10.1007/s11104-015-2508-3 doi (NATIONALLICENCE)springer-10.1007/s11104-015-2508-3 Quantifying carbon input for targeted soil organic carbon sequestration in China's croplands [Elektronische Daten] [Guocheng Wang, Yao Huang, Wen Zhang, Yongqiang Yu, Wenjuan Sun] Background and aims: Increasing the soil organic carbon (SOC) pool in croplands can not only promote crop production but also mitigate climate change. The objective of this work was to quantify the needed C input rates for both maintaining China's cropland SOC and improving it to global average level. Methods: By using a biogeophysical model (Agro-C), we performed simulations with a high spatial resolution (10 × 10km) across China's croplands to quantify the C input rate under given scenarios. Results: The model simulations showed that an average C input of 2.1Mg C ha−1year−1 is required to stop soil C loss and that SOC density could approach the global mean of 55Mg C ha−1 by 2050 when 5.1Mg C ha−1year−1 is incorporated into the soils. Conclusions: The quantified C inputs showed a large spatial disparity, depending on the existing SOC level, mean annual temperature and precipitation. The existing SOC level in Heilongjiang Province, where the cropland area accounts for 9.2% of the national total, is much higher but the current C input is much lower than it is elsewhere. Increasing the organic C input should be given priority in this province. Springer International Publishing Switzerland, 2015 Agro-C model nationallicence Croplands nationallicence Soil organic carbon nationallicence Carbon sequestration nationallicence China nationallicence Wang Guocheng LAPC, Institute of Atmospheric Physics, Chinese Academy of Sciences, 100029, Beijing, People's Republic of China aut Huang Yao State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, 100093, Beijing, People's Republic of China aut Zhang Wen LAPC, Institute of Atmospheric Physics, Chinese Academy of Sciences, 100029, Beijing, People's Republic of China aut Yu Yongqiang LAPC, Institute of Atmospheric Physics, Chinese Academy of Sciences, 100029, Beijing, People's Republic of China aut Sun Wenjuan State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, 100093, Beijing, People's Republic of China aut Plant and Soil Springer International Publishing 394/1-2(2015-09-01), 57-71 0032-079X 394:1-2<57 2015 394 11104 https://doi.org/10.1007/s11104-015-2508-3 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11104-015-2508-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wang Guocheng LAPC, Institute of Atmospheric Physics, Chinese Academy of Sciences, 100029, Beijing, People's Republic of China aut NATIONALLICENCE 700 1- Huang Yao State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, 100093, Beijing, People's Republic of China aut NATIONALLICENCE 700 1- Zhang Wen LAPC, Institute of Atmospheric Physics, Chinese Academy of Sciences, 100029, Beijing, People's Republic of China aut NATIONALLICENCE 700 1- Yu Yongqiang LAPC, Institute of Atmospheric Physics, Chinese Academy of Sciences, 100029, Beijing, People's Republic of China aut NATIONALLICENCE 700 1- Sun Wenjuan State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, 100093, Beijing, People's Republic of China aut NATIONALLICENCE 773 0- Plant and Soil Springer International Publishing 394/1-2(2015-09-01), 57-71 0032-079X 394:1-2<57 2015 394 11104