气候变化领域集成服务门户(CCPortal): Changes in soil carbon and nitrogen content, associated with aggregate fractions, after conversion of sandy desert to irrigation farmland, northwest China

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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 (通讯作者)，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.
发表日期	2022
ISSN	0266-0032
EISSN	1475-2743
起始页码	396
结束页码	410
卷号	38 期号:1
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.
关键词	LONG-TERM FERTILIZATION HEXI CORRIDOR REGION ORGANIC-MATTER AGRICULTURAL SOILS CROPPING SYSTEM NO-TILLAGE SEQUESTRATION STABILITY CULTIVATION VEGETATION
英文关键词	aeolian sandy soil; cultivation ages; soil aggregates; soil inorganic carbon; soil organic carbon; total nitrogen
语种	英语
WOS研究方向	Agriculture
WOS类目	Soil Science
WOS记录号	WOS:000717713900001
来源期刊	SOIL USE AND MANAGEMENT
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254026
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]. 中国科学院西北生态环境资源研究院,2022,38(1).
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,38(1).
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 38.1(2022).