Arid
DOI10.1002/jgrf.20043
Potential dust emissions from the southern Kalahari’s dunelands
Bhattachan, Abinash1; D’Odorico, Paolo1; Okin, Gregory S.2; Dintwe, Kebonyethata2
通讯作者Bhattachan, Abinash
来源期刊JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
ISSN0148-0227
出版年2013
卷号118期号:1页码:307-314
英文摘要

The Southern Hemisphere shows relatively low levels of atmospheric dust concentrations. Dust concentrations could, however, increase as a result of losses of vegetation cover in the southern Kalahari. There is some evidence of an ongoing remobilization of stabilized dunefields in the southern Kalahari where dune crests with sparse vegetation cover are reactivated during dry and windy periods, a phenomenon that is predicted to intensify with increased land degradation, overgrazing, and droughts. Despite the potentially important climatic and biogeochemical implications of dust emissions from the Kalahari, it is still unclear whether the predicted remobilization of the Kalahari dunes could be associated with increased dust emissions from this region. The dependence of sediment fluxes and dust emissions on vegetation cover in the Kalahari dunelands remains poorly understood, which prevents a quantitative assessment of possible changes in aeolian activity in this region under different land use and land cover scenarios. In this study, we report the results of an aeolian sediment sampling campaign over a variety of land covers in the southern Kalahari. We use these results to quantify the potential rate of dust emissions and its dependence on vegetation cover and to make an estimate of dust fluxes from a portion of the southern Kalahari. The results show that the loss of vegetation could lead to substantial increases in dust emission and nutrient loss.


类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000318271200022
WOS关键词WIND EROSION ; DESERT DUST ; VEGETATION COVER ; SOUTHWESTERN KALAHARI ; LAND DEGRADATION ; CLIMATE ; AEROSOLS ; BIOGEOCHEMISTRY ; THRESHOLD ; DESERTIFICATION
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
来源机构University of California, Los Angeles
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/178435
作者单位1.Univ Virginia, Dept Environm Sci, Charlottesville, VA 22904 USA;
2.Univ Calif Los Angeles, Dept Geog, Los Angeles, CA 90095 USA
推荐引用方式
GB/T 7714
Bhattachan, Abinash,D’Odorico, Paolo,Okin, Gregory S.,等. Potential dust emissions from the southern Kalahari’s dunelands[J]. University of California, Los Angeles,2013,118(1):307-314.
APA Bhattachan, Abinash,D’Odorico, Paolo,Okin, Gregory S.,&Dintwe, Kebonyethata.(2013).Potential dust emissions from the southern Kalahari’s dunelands.JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE,118(1),307-314.
MLA Bhattachan, Abinash,et al."Potential dust emissions from the southern Kalahari’s dunelands".JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE 118.1(2013):307-314.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Bhattachan, Abinash]的文章
[D’Odorico, Paolo]的文章
[Okin, Gregory S.]的文章
百度学术
百度学术中相似的文章
[Bhattachan, Abinash]的文章
[D’Odorico, Paolo]的文章
[Okin, Gregory S.]的文章
必应学术
必应学术中相似的文章
[Bhattachan, Abinash]的文章
[D’Odorico, Paolo]的文章
[Okin, Gregory S.]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。