Dust deposition and its significance to soil nutrients in the Otindag Desert, China

doi:10.1016/j.jaridenv.2021.104612

	Dust deposition and its significance to soil nutrients in the Otindag Desert, China
	Wang, Xunming 1,2; Cai, Diwen 1; Li, Danfeng 1; Lou, Junpeng 1; Zheng, Yang 1; Hu, Shi 1; Liu, Fa 1
刊名	JOURNAL OF ARID ENVIRONMENTS
	2021-11-01
卷号	194 页码:8
关键词	Dust deposition Topsoil Nutrient Arid and semiarid region Otindag desert
ISSN号	0140-1963
DOI	10.1016/j.jaridenv.2021.104612
通讯作者	Li, Danfeng(lidf@igsnrr.ac.cn)
英文摘要	Quantification of fine fraction and nutrient inputs by dust deposition is vital to understand the biogeochemical cycling and its effect on vegetation succession in arid and semiarid regions. The Otindag Desert of China is usually regarded as a dust source area, and little is known about its sink function by dust deposition. Dust and topsoil sampling and nutrient analyses were conducted to determine the contributions of dust deposition (fractions <50 mu m in diameter) on topsoil heterogeneity across the Otindag Desert. Mean dust deposition intensity from field investigation was 19.69 +/- 7.77 g/m(2) from August 2018 to July 2019. There were significant spatial differences in dust deposition, and the Otindag Desert received more dust deposition from external sources. Inputs of available phosphorus, total phosphorus, total nitrogen and soil organic carbon were 0.45 +/- 0.083 mg/m(2), 0.011 +/- 0.007 g/m(2), 0.027 +/- 0.018 g/m(2), and 0.331 +/- 0.224 g/m(2), respectively. The nutrient contents within dust deposition fractions were higher on average by 104% than topsoil, and the co-occurrence of dust emission and deposition contributes to the heterogeneity of topsoil. The results of this study are essential for taking efficient measures to restore degraded land in the Otindag Desert and other similar regions.
资助项目	National Natural Science Foundation of China[41930640] ; National Natural Science Foundation of China[41771012] ; National Key Research and Development Program of China[2016YFA0601900] ; Key Frontier Program of Chinese Academy of Sciences[QYZDJ-SSW-DQC043]
WOS关键词	EPHEMERAL RIVER VALLEYS ; WIND EROSION ; AEOLIAN DUST ; ATMOSPHERIC DEPOSITION ; ASIAN DUST ; SAHARAN DUST ; NEW-MEXICO ; ECOSYSTEM ; IRON ; FLUX
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
WOS记录号	WOS:000691565800004
资助机构	National Natural Science Foundation of China ; National Key Research and Development Program of China ; Key Frontier Program of Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/165200]
专题	中国科学院地理科学与资源研究所
通讯作者	Li, Danfeng
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xunming,Cai, Diwen,Li, Danfeng,et al. Dust deposition and its significance to soil nutrients in the Otindag Desert, China[J]. JOURNAL OF ARID ENVIRONMENTS,2021,194:8.
APA	Wang, Xunming.,Cai, Diwen.,Li, Danfeng.,Lou, Junpeng.,Zheng, Yang.,...&Liu, Fa.(2021).Dust deposition and its significance to soil nutrients in the Otindag Desert, China.JOURNAL OF ARID ENVIRONMENTS,194,8.
MLA	Wang, Xunming,et al."Dust deposition and its significance to soil nutrients in the Otindag Desert, China".JOURNAL OF ARID ENVIRONMENTS 194(2021):8.