Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/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
![]() |
ISSN | 1875-9637 |
EISSN | 2212-1684 |
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. |
条目包含的文件 | 条目无相关文件。 |
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。