干旱区生态环境知识资源中心(Arid): Profile storage and vertical distribution (0-150 cm) of soil inorganic carbon in croplands in northeast China

Arid

DOI	10.1016/j.catena.2019.104302
	Profile storage and vertical distribution (0-150 cm) of soil inorganic carbon in croplands in northeast China
	You, Mengyang 1,2; Han, Xiaozeng 1; Hu, Ning 3; Du, Shuli 1; Doane, Timothy A.4; Li, Lu-Jun 1,2
通讯作者	Li, Lu-Jun
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2020
卷号	185
英文摘要	In addition to soil organic carbon (SOC), soil inorganic carbon (SIC) is also an important reservoir of carbon (C) in arid and semiarid areas, and often contributes a large amount to total soil C. Despite carbonate soils distributed in some regions of northeast China, few data are available on SIC stock, especially in deep soils, resulting underestimation of total soil C. Based on 25 soil profiles (> 150 cm) sampled from cropping lands of Lindian County, a typical region of carbonate soils in northeast China, we calculated SIC stock and its distribution in soil profiles and explored their relationship with soil physical and chemical properties. Results showed that SIC density (SICD) within 0-150 cm depth ranged from 109.0 to 331.7 Mg ha(-1), with an average of 259.0 Mg ha(-1), accounting for 68% of total soil C stock. The ratio of SIC to SOC ranged from 0.1 to 8.0 across soil profiles and was less than 1.0 on average in the upper 40 cm. The SICD in soil profiles were 55.6, 114.4, and 88.9 Mg ha(-1) in the 0-40, 40-100, and 100-150 cm, respectively. The stocks of SIC and SOC in the 100-150 cm depth accounted for 23% and 6%, respectively, of the total soil C stock across soil profile. The SIC/SOC ratio was negatively correlated with total nitrogen, available phosphorus and potassium. A structural equation model analysis showed that soil depth combined with soil physical and chemical properties significantly affected the SIC/SOC ratio. Our study highlights the importance of SIC in total C stocks, and indicates SIC stock below 40 cm dominates the total C in soil profile, and SIC stock in deep layers (100-150 cm) can contribute one third to the total stock in the profile (0-150 cm). The distribution of soil C components throughout soil profiles as influenced by soil properties depends on soil layers.
英文关键词	Soil profile Carbon storage Cropping land Northeast China
类型	Article
语种	英语
国家	Peoples R China ; USA
收录类别	SCI-E
WOS记录号	WOS:000504504500004
WOS关键词	ORGANIC-CARBON ; SEQUESTRATION ; NITROGEN ; STOCKS ; FERTILIZATION ; GRASSLANDS ; DYNAMICS ; PATTERN ; FOREST ; AREA
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
EI主题词	2020-02-01
来源机构	University of California, Davis
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/312753
作者单位	1.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Key Lab Mollisols Agroecol, Natl Field Observat & Res Stn Halton Agroecosyst, Harbin 150081, Heilongjiang, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 3.Univ Oklahoma, Inst Environm Genom, Norman, OK 73019 USA; 4.Univ Calif Davis, Dept Land Air & Water Resources, Davis, CA 95616 USA
推荐引用方式 GB/T 7714	You, Mengyang,Han, Xiaozeng,Hu, Ning,et al. Profile storage and vertical distribution (0-150 cm) of soil inorganic carbon in croplands in northeast China[J]. University of California, Davis,2020,185.
APA	You, Mengyang,Han, Xiaozeng,Hu, Ning,Du, Shuli,Doane, Timothy A.,&Li, Lu-Jun.(2020).Profile storage and vertical distribution (0-150 cm) of soil inorganic carbon in croplands in northeast China.CATENA,185.
MLA	You, Mengyang,et al."Profile storage and vertical distribution (0-150 cm) of soil inorganic carbon in croplands in northeast China".CATENA 185(2020).