干旱区生态环境知识资源中心(Arid): Dynamics of pedogenic carbonate in the cropland of the North China Plain: Influences of intensive cropping and salinization

Arid

DOI	10.1016/j.agee.2020.106820
	Dynamics of pedogenic carbonate in the cropland of the North China Plain: Influences of intensive cropping and salinization
	Lu, Tongping 1; Wang, Xiujun 1; Xu, Minggang 2; Yu, Zhitong 3; Luo, Yongming 4; Smith, Pete 5
通讯作者	Wang, Xiujun
来源期刊	AGRICULTURE ECOSYSTEMS & ENVIRONMENT
ISSN	0167-8809
EISSN	1873-2305
出版年	2020
卷号	292
英文摘要	There is evidence of higher levels of pedogenic carbonate (PIC) than soil organic carbon (SOC) in cropland, and a positive relationship between PIC and SOC in salt-affected soils of arid and semi-arid regions. This study is designed to test the hypothesis that PIC is influenced by intensive cropping and salinization in semi-humid regions, in which soil carbonate (SIC) often exceeds SOC. We select a typical cropland with a maize-wheat rotation in the North China Plain, which covers two distinct regions, i.e. the Hebei Plain (HBP) under intensive cropping and the Yellow River Delta (YRD) under soil salinization. Our data show large variations in soil carbon stocks, with slightly higher values for PIC (3.9-14.5 kg C m(-2)) relative to those of SOC (2.2-9.2 kg C m(-2)) in the top 1 m. On average, SOC stock is 5.65 kg C m(-2) in the YRD, which is slightly lower than in the HBP (6.21 kg C m(-2)); SIC is significantly higher in the YRD (16.9 kg C m(-2)) relative to the HBP (13.7 kg C m(-2)). However, PIC stock is smaller in the YRD (8.67 kg C m(-2)) relative to the HBP (9.41 kg C m(-2)). Despite no clear SIC-SOC relationship, there exists a significant positive correlation (P < 0.01) between PIC and SOC stocks in the study area. The PIC:SOC ratio is generally greater than one over a 0-100 cm layer in the majority of croplands in the north China, with larger ratios in the salt-affected soils. Our analyses suggest that the formation and storage of PIC are regulated by levels of SOC and Ca2+/Mg2+ in soil profiles, and there is large potential for enhancing carbon sequestration as carbonate under intensive cropping through sound management in the cropland of arid, semi-arid and semi-humid regions.
英文关键词	Pedogenic carbonate Soil organic carbon Cropland Salts North China Plain Carbon isotope
类型	Article
语种	英语
国家	Peoples R China ; Scotland
开放获取类型	Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000514931700016
WOS关键词	SOIL ORGANIC-CARBON ; STABLE ISOTOPIC COMPOSITION ; YELLOW-RIVER DELTA ; INORGANIC CARBON ; LAND-USE ; SEQUESTRATION ; BACTERIAL ; MATTER ; FERTILIZATION ; ACCUMULATION
WOS类目	Agriculture, Multidisciplinary ; Ecology ; Environmental Sciences
WOS研究方向	Agriculture ; Environmental Sciences & Ecology
来源机构	北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/313976
作者单位	1.Beijing Normal Univ, Coll Global Change & Earth Syst Sci, Beijing 100875, Peoples R China; 2.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Beijing 100081, Peoples R China; 3.China Acad Space Technol, Qian Xuesen Lab Space Technol, Beijing 100094, Peoples R China; 4.Chinese Acad Sci, Inst Soil Sci, Nanjing 210008, Peoples R China; 5.Univ Aberdeen, Inst Biol & Environm Sci, Aberdeen AB24 3UU, Scotland
推荐引用方式 GB/T 7714	Lu, Tongping,Wang, Xiujun,Xu, Minggang,et al. Dynamics of pedogenic carbonate in the cropland of the North China Plain: Influences of intensive cropping and salinization[J]. 北京师范大学,2020,292.
APA	Lu, Tongping,Wang, Xiujun,Xu, Minggang,Yu, Zhitong,Luo, Yongming,&Smith, Pete.(2020).Dynamics of pedogenic carbonate in the cropland of the North China Plain: Influences of intensive cropping and salinization.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,292.
MLA	Lu, Tongping,et al."Dynamics of pedogenic carbonate in the cropland of the North China Plain: Influences of intensive cropping and salinization".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 292(2020).