Comparing carbon and nitrogen stocks in paddy and upland soils: Accumulation, stabilization mechanisms, and environmental drivers

doi:10.1016/j.geoderma.2021.115121

	Comparing carbon and nitrogen stocks in paddy and upland soils: Accumulation, stabilization mechanisms, and environmental drivers
	Wei, Liang 1,2; Ge, Tida 1,3; Zhu, Zhenke 1; Luo, Yu 4; Yang, Yuanhe5 ; Xiao, Mouliang 1; Yan, Zhifeng 6; Li, Yuhong 1; Wu, Jinshui 1,2; Kuzyakov, Yakov 1,7,8
	2021
发表期刊	GEODERMA
ISSN	0016-7061
卷号	398
摘要	Paddy soils, a type of Hydragric Anthrosol, have much greater soil organic C (SOC) and total N (TN) contents than that in upland soils. However, this fact has never been generalized or mechanistically explained. We conducted a global meta-analysis on the organic C and total N contents and their stocks in continuous paddy soils (578 sites) and compared them with those in adjacent upland soils. Average C stocks up to depths of 35 cm in upland and paddy soils were 31 and 47 Mg C ha(-1), respectively. The N stocks in upland and paddy soils were 2.2 and 3.2 Mg N ha(-1), respectively. The combined effects of mean annual temperature and precipitation showed that C and N stocks in paddy and upland soils are generally the largest under cool and humid conditions and the smallest in warm and dry climates. Quantitative analysis of climatic, and soil physical and chemical factors showed that 1) climate effects are weakened by management such as puddling and flooding, thereby increasing the importance of soil physico-chemical properties, which control soil organic matter (SOM) stabilization, and 2) climate (e.g., mean annual precipitation) mainly affects C and N stocks in upland soils; the chemical properties (such as pH), on the other hand, primarily affect C and N stocks in paddy soils. Greater C and N stocks in paddy soils are the result of 1) a larger input of organic C by rice than by most upland cereals, 2) slower decomposition of plant residues and SOM under anoxic conditions, and 3) a greater importance of sesquioxides in the biochemical stabilization of SOM. We conclude that these man-made paddy soils store more organic C and N than their upland neighbors despite long-term and intensive management.
关键词	C and N stocks Carbon sequestration Paddy soils Upland soils Land-use change Microbial turnover
学科领域	Soil Science
DOI	10.1016/j.geoderma.2021.115121
收录类别	SCI
语种	英语
WOS关键词	DISSOLVED ORGANIC-CARBON ; MICROBIAL BIOMASS CARBON ; TEMPERATURE SENSITIVITY ; MATTER FRACTIONS ; CROPPING SYSTEMS ; ENZYME-ACTIVITY ; FLOODED RICE ; LAND-USE ; MANAGEMENT ; DYNAMICS
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000656899400011
出版者	ELSEVIER
文献子类	Article
出版地	AMSTERDAM
EISSN	1872-6259
资助机构	National Natural Science Foundation of China [41977093, 41877104] ; Natural Science Foundation of Hunan Province [2019JJ10003, 2019JJ30028] ; Hunan Province Base for Scientific and Technological Innovation Cooperation - K.C. Wong Magna Fund in Ningbo University [2018WK4012] ; Youth Innovation Team Project of Institute of Subtropical Agriculture, Chinese Academy of Sciences [2017QNCXTD_GTD] ; RUDN University program 5-100
作者邮箱	gtd@isa.ac.cn
引用统计	被引频次：77[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/26791
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg, Changsha 410125, Hunan, Peoples R China 2.Chinese Acad Sci, Inst Subtrop Agr, Changsha Res Stn Agr & Environm Monitoring, Changsha 410125, Hunan, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Ningbo Univ, Inst Plant Virol, State Key Lab Managing Biot & Chem Threats Qual &, Key Lab Biotechnol Plant Protect Minist Agr & Zhe, Ningbo 315211, Peoples R China 5.Zhejiang Univ, Inst Soil & Water Resources & Environm Sci, Zhejiang Prov Key Lab Agr Resources & Environm, Hangzhou 310058, Peoples R China 6.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 7.Tianjin Univ, Sch Earth Syst Sci, Inst Surface Earth Syst Sci, Tianjin, Peoples R China 8.Univ Goettingen, Dept Soil Sci Temperate Ecosyst, Dept Agr Soil Sci, D-37077 Gottingen, Germany 9.RUDN Univ, Agrotechnol Inst, Moscow 117198, Russia
推荐引用方式 GB/T 7714	Wei, Liang,Ge, Tida,Zhu, Zhenke,et al. Comparing carbon and nitrogen stocks in paddy and upland soils: Accumulation, stabilization mechanisms, and environmental drivers[J]. GEODERMA,2021,398.
APA	Wei, Liang.,Ge, Tida.,Zhu, Zhenke.,Luo, Yu.,Yang, Yuanhe.,...&Kuzyakov, Yakov.(2021).Comparing carbon and nitrogen stocks in paddy and upland soils: Accumulation, stabilization mechanisms, and environmental drivers.GEODERMA,398.
MLA	Wei, Liang,et al."Comparing carbon and nitrogen stocks in paddy and upland soils: Accumulation, stabilization mechanisms, and environmental drivers".GEODERMA 398(2021).

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