Arid
DOI10.1016/j.aeolia.2014.04.007
Consistency of wind erosion assessments across land use and land cover types: A critical analysis
Li, Junran1; Okin, Gregory S.2; Tatarko, John3; Webb, Nicholas P.4; Herrick, Jeffrey E.4
通讯作者Li, Junran
来源期刊AEOLIAN RESEARCH
ISSN1875-9637
EISSN2212-1684
出版年2014
卷号15页码:253-260
英文摘要

In recent decades, large areas of rangeland have been converted to cropland or vice versa in the western United States and elsewhere in the world, driven largely by increased crop prices, loss of access to irrigation water, and agricultural expansion/contraction. Wind erosion and dust emissions are key processes that have not been well studied during land use and associated land cover changes. This assessment is challenging because currently no model is available that can provide field-to landscape-scale estimates of wind erosion on both rangeland and cropland, and account for soil, vegetation and management changes. In this paper, we compare aeolian sediment transport estimates from available cropland models and a number of mass flux equations developed for rangelands, for a bare soil surface with different levels of crust and surface roughness under different wind speeds. Our results show that the simulated horizontal sediment mass fluxes are similar for cropland and rangeland models at large surface crust coverage and aerodynamic roughness. In situations of small to moderate crust cover and soil roughness, horizontal mass fluxes varied by over three orders of magnitude among the tested models. A correlation analysis shows that horizontal mass fluxes simulated by cropland and rangeland models are correlated, with correlation R-2 of 0.37-0.99 across different models. Finally, we propose an approach to estimate changes in aeolian transport with changes in land use. Although this approach may be limited to situations of unvegetated surfaces, it provides a preliminary method for land managers and policymakers to estimate potential wind erosion changes in response to land use change. (C) 2014 Elsevier B.V. All rights reserved.


英文关键词Wind erosion modeling Model comparison Horizontal mass flux WEPS SWEEP RWEQ
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000344423300021
WOS关键词ATMOSPHERIC DUST CYCLE ; COLUMBIA PLATEAU ; DESERT GRASSLAND ; SOIL ; MODEL ; PREDICTION ; WEPS ; VALIDATION ; VEGETATION ; TRANSPORT
WOS类目Geography, Physical
WOS研究方向Physical Geography
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/2XILL650/180444
作者单位1.Univ Tulsa, Dept Geosci, Tulsa, OK 74104 USA;
2.Univ Calif Los Angeles, Dept Geog, Los Angeles, CA 90095 USA;
3.USDA ARS, Engn & Wind Eros Res Unit, Manhattan, KS 66502 USA;
4.USDA ARS, Las Cruces, NM 88003 USA
推荐引用方式
GB/T 7714
Li, Junran,Okin, Gregory S.,Tatarko, John,et al. Consistency of wind erosion assessments across land use and land cover types: A critical analysis[J]. University of California, Los Angeles,2014,15:253-260.
APA Li, Junran,Okin, Gregory S.,Tatarko, John,Webb, Nicholas P.,&Herrick, Jeffrey E..(2014).Consistency of wind erosion assessments across land use and land cover types: A critical analysis.AEOLIAN RESEARCH,15,253-260.
MLA Li, Junran,et al."Consistency of wind erosion assessments across land use and land cover types: A critical analysis".AEOLIAN RESEARCH 15(2014):253-260.
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