干旱区生态环境知识资源中心(Arid): Changes in soil carbon and nitrogen content, associated with aggregate fractions, after conversion of sandy desert to irrigation farmland, northwest China

Arid

DOI	10.1111/sum.12743
	Changes in soil carbon and nitrogen content, associated with aggregate fractions, after conversion of sandy desert to irrigation farmland, northwest China
	Niu, Ziru; Su, Yongzhong; An, Fangjiao; Liu, Tingna
通讯作者	Su, YZ (corresponding author), Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Ecohydrol Inland River Basin, Linze Inlan River Basin Res Stn,Chinese Ecosyst R, Lanzhou 730000, Peoples R China.
来源期刊	SOIL USE AND MANAGEMENT
ISSN	0266-0032
EISSN	1475-2743
出版年	2022
英文摘要	Soil organic carbon (SOC), soil inorganic carbon (SIC) and silt and clay are the main cementing substances formed by soil aggregates in arid areas. In this study, SOC, SIC and total nitrogen (TN) contents were analysed for different soil aggregate fractions that were reclaimed from different times (5, 15, 20, 35, 40, 50 and 60 years), in northwest China. Our results show that, as cultivation time increased from 0 to 60 years, the number of >2, 2-0.25 and 0.25-0.053 mm aggregates increased from 2.76%, 7.23% and 1.40% to 12.44%, 18.32% and 7.88%, respectively, and the stability of aggregates gradually increased from 0 to 0.43. We also found that the OC in the >2, 2-0.25 and 0.25-0.053 mm aggregates increased from 4.97, 3.81 and 2.63 g kg(-2) to 9.45, 7.16 and 4.22 g kg(-2), and the TN content increased from 0.70, 0.54 and 0.37 g kg(-2) to 1.05, 0.90 and 0.70 g kg(-2), while the IC in the >2 mm aggregates decreased from 7.22 to 6.22 g kg(-2), and the IC content of the 2-0.25 mm aggregates increased from 5.16 to 7.3 g kg(-2). Increasing the silt and clay particle content of soil may be an effective means to achieve continuous improvements in agricultural productivity for newly reclaimed land in the ecologically fragile marginal oasis area.
英文关键词	aeolian sandy soil cultivation ages soil aggregates soil inorganic carbon soil organic carbon total nitrogen
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000717713900001
WOS关键词	LONG-TERM FERTILIZATION ; HEXI CORRIDOR REGION ; ORGANIC-MATTER ; AGRICULTURAL SOILS ; CROPPING SYSTEM ; NO-TILLAGE ; SEQUESTRATION ; STABILITY ; CULTIVATION ; VEGETATION
WOS类目	Soil Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/367667
作者单位	[Niu, Ziru; Su, Yongzhong; An, Fangjiao; Liu, Tingna] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Ecohydrol Inland River Basin, Linze Inlan River Basin Res Stn,Chinese Ecosyst R, Lanzhou 730000, Peoples R China; [Niu, Ziru; Su, Yongzhong; An, Fangjiao] Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Niu, Ziru,Su, Yongzhong,An, Fangjiao,et al. Changes in soil carbon and nitrogen content, associated with aggregate fractions, after conversion of sandy desert to irrigation farmland, northwest China[J],2022.
APA	Niu, Ziru,Su, Yongzhong,An, Fangjiao,&Liu, Tingna.(2022).Changes in soil carbon and nitrogen content, associated with aggregate fractions, after conversion of sandy desert to irrigation farmland, northwest China.SOIL USE AND MANAGEMENT.
MLA	Niu, Ziru,et al."Changes in soil carbon and nitrogen content, associated with aggregate fractions, after conversion of sandy desert to irrigation farmland, northwest China".SOIL USE AND MANAGEMENT (2022).