Variation in dustfall on the western Chinese Loess Plateau

被引：1

作者：

Wang, Xunming ^{[1
,2
]}

Cai, Diwen ^{[1
,2
]}

Lou, Junpeng ^{[1
,3
]}

Tao, Zhenghua ^{[1
]}

Li, Hui ^{[4
]}

Zhang, Caixia ^{[4
]}

机构：

[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

[3] Tsinghua Univ, Dept Hydraul Engn, Beijing 10084, Peoples R China

[4] Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Key Lab Desert & Desertificat, Lanzhou 730000, Peoples R China

来源：

ARABIAN JOURNAL OF GEOSCIENCES | 2020年 / 13卷 / 21期

基金：

中国国家自然科学基金;

关键词：

Dustfall; Pollutant; Loess; Source; Chinese Loess Plateau; PAST; 8; MA; TIBETAN PLATEAU; EOLIAN DEPOSITS; YELLOW-RIVER; PROVENANCE; ELEMENT; TRACE; ACCUMULATION; MINERALOGY; CLIMATE;

D O I：

10.1007/s12517-020-06133-9

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Dustfall samples from the western Chinese Loess Plateau (CLP) were collected from 2013 to 2016 at Jiuzhoutai for dustfall variation analysis. Results showed that the seasonal dustfall variations were non-significant in the region, indicating dustfall sources with inconsistent patterns largely contributed to the modern loess formation. The average rate of loess accumulation was approximately 0.34 mm/year, which is much higher compared to the other periods of the Holocene. In addition, the lack of regular patterns of dustfall contents in the coarse fraction (> 50 mu m in diameter) indicates a proximal source with crustal origins, which is a dominant source for the modern loess. From 2013 to 2016, the dustfall from crustal origins increased by approximately 19%, and among those collected dustfall, approximately 24% came from pollutants, indicating that anthropogenic activities such as industrial pollutants and vehicle emissions played an important role in modern loess accumulation.

引用

页数：9

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