Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.aeolia.2011.08.001 |
Geomorphic and land cover characteristics of aeolian dust sources in West Texas and eastern New Mexico, USA | |
Lee, Jeffrey A.1; Baddock, Matthew C.2; Mbuh, Mbongowo J.3; Gill, Thomas E.4 | |
通讯作者 | Lee, Jeffrey A. |
会议名称 | 7th International Conference on Aeolian Research (ICAR) |
会议日期 | JUL 05-09, 2010 |
会议地点 | Santa Rosa, ARGENTINA |
英文摘要 | Wind erosion in West Texas and eastern New Mexico typically happens in localized source areas while most of the landscape is not eroding. Dust source areas were located and characterized according to type of geomorphological surface and land cover. For 2001-09, 27 erosion event days were identified where dust plumes were visible on MODIS satellite images. From these images, 625 point sources were located. Geomorphology and land use (land cover) were mapped and overlaid on the dust source point map. In terms of geomorphology, 79% of sources occurred on sand sheets, which comprise 50% of the region. Other geomorphic surfaces were sand dunes (5% sources from 12% area), loess (4%/24%), playa (3%/1%), high relief alluvial (3%/6%) and low relief alluvial (6%/5%). Sand sheets (here, anthropogenically disturbed) produce more sources than other geomorphic categories, with playas producing the most sources per unit area. Results for land use and land cover reflected cultivated cropland (57%/33%), shrubland (17%/32%), grassland (20%/31%) and urban (4%/4%). Cropped land produces proportionately more dust than rangeland or other land uses. With dust emission dominated by relatively uniform geomorphology, the data highlight the strong anthropogenic influence on the spatial pattern of observed dust sources in the region. (C) 2011 Elsevier B.V. All rights reserved. |
英文关键词 | Blowing dust Land cover Geomorphology Great plains MODIS |
来源出版物 | AEOLIAN RESEARCH |
ISSN | 1875-9637 |
EISSN | 2212-1684 |
出版年 | 2012 |
卷号 | 3 |
期号 | 4 |
页码 | 459-466 |
出版者 | ELSEVIER SCI LTD |
类型 | Article;Proceedings Paper |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E ; CPCI-S |
WOS记录号 | WOS:000300537800010 |
WOS关键词 | SOUTHERN HIGH-PLAINS ; WIND EROSION ; BLOWING DUST ; CHIHUAHUAN DESERT ; SOIL ; FREQUENCY ; SENSITIVITY ; SIMULATION ; DATABASE ; CLIMATE |
WOS类目 | Geography, Physical |
WOS研究方向 | Physical Geography |
资源类型 | 会议论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/300736 |
作者单位 | 1.Texas Tech Univ, Dept Geosci, Lubbock, TX 79409 USA; 2.USDA ARS, Wind Eros & Water Conservat Res Unit, Lubbock, TX 79415 USA; 3.Missouri State Univ, Dept Geog Geol & Planning, Springfield, MO 65897 USA; 4.Univ Texas El Paso, Dept Geol Sci, El Paso, TX 79968 USA |
推荐引用方式 GB/T 7714 | Lee, Jeffrey A.,Baddock, Matthew C.,Mbuh, Mbongowo J.,et al. Geomorphic and land cover characteristics of aeolian dust sources in West Texas and eastern New Mexico, USA[C]:ELSEVIER SCI LTD,2012:459-466. |
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