Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1029/2006WR004895 |
Enhancement of wind erosion by fire-induced water repellency | |
Ravi, Sujith; D’Odorico, Paolo; Herbert, Bruce; Zobeck, Ted; Over, Thomas M. | |
通讯作者 | Ravi, Sujith |
来源期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
出版年 | 2006 |
卷号 | 42期号:11 |
英文摘要 | [ 1] The occurrence of fire and the subsequent increase in wind erosion are known to affect vegetation dynamics in dryland landscapes. Fires act as a disturbance on shrubs and trees and expose the soil surface to the erosive action of wind, thereby affecting the loss and redistribution of soil nutrients. Despite the relevance of wind erosion and fires to the dynamics of arid ecosystems, the interactions between these two processes remain poorly understood. We have investigated how a representative water repellent organic compound released by burning biomass and absorbed in the soil may enhance soil erodibility. To this end, we carried out a series of wind tunnel experiments, laboratory tests, and theoretical analyses to assess the effect of fire-induced water repellency on the soil susceptibility to wind erosion. The experiments were carried out using clean, well-sorted sand which was artificially coated with palmitic acid, a common water repellency inducing fatty acid found in most plants. The results indicate that fire-induced water repellency enhances soil erodibility, causing a drop in wind erosion threshold velocity. The results are explained by the effect of water repellent compounds on soil-water contact angle and on the strength of interparticle wet-bonding forces. |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000242748200002 |
WOS关键词 | AIR-DRY SOILS ; MANAGEMENT ; HUMIDITY ; VELOCITY ; SAVANNAS ; TEMPERATURE ; ENTRAINMENT ; COEXISTENCE ; VEGETATION ; SEDIMENT |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/153204 |
作者单位 | (1)Univ Virginia, Dept Environm Sci, Charlottesville, VA 22903 USA;(2)Texas A&M Univ, Dept Geol & Geophys, College Stn, TX 77843 USA;(3)ARS, Wind Eros & Water Conservat Serv, USDA, Lubbock, TX 79415 USA;(4)Eastern Illinois Univ, Dept Geol & Geog, Charleston, IL 61920 USA |
推荐引用方式 GB/T 7714 | Ravi, Sujith,D’Odorico, Paolo,Herbert, Bruce,et al. Enhancement of wind erosion by fire-induced water repellency[J],2006,42(11). |
APA | Ravi, Sujith,D’Odorico, Paolo,Herbert, Bruce,Zobeck, Ted,&Over, Thomas M..(2006).Enhancement of wind erosion by fire-induced water repellency.WATER RESOURCES RESEARCH,42(11). |
MLA | Ravi, Sujith,et al."Enhancement of wind erosion by fire-induced water repellency".WATER RESOURCES RESEARCH 42.11(2006). |
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