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

文献类型：期刊论文

作者Wang, Xunming1,2; Cai, Diwen2; Li, Danfeng2; Lou, Junpeng2; Zheng, Yang2; Hu, Shi2; Liu, Fa2
刊名JOURNAL OF ARID ENVIRONMENTS
出版日期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
DOI10.1016/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.
WOS关键词EPHEMERAL RIVER VALLEYS ; WIND EROSION ; AEOLIAN DUST ; ATMOSPHERIC DEPOSITION ; ASIAN DUST ; SAHARAN DUST ; NEW-MEXICO ; ECOSYSTEM ; IRON ; FLUX
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研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000691565800004
出版者ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
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
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.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, 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.

入库方式： OAI收割

来源：地理科学与资源研究所

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