Arid
DOI10.1016/j.aeolia.2014.12.005
Grazing impacts on the susceptibility of rangelands to wind erosion: The effects of stocking rate, stocking strategy and land condition
Aubault, Helene1; Webb, Nicholas P.2; Strong, Craig L.3; McTainsh, Grant H.1; Leys, John F.4; Scanlan, Joe C.5
通讯作者Aubault, Helene
来源期刊AEOLIAN RESEARCH
ISSN1875-9637
EISSN2212-1684
出版年2015
卷号17页码:89-99
英文摘要

An estimated 110 Mt of dust is eroded by wind from the Australian land surface each year, most of which originates from the arid and semi-arid rangelands. Livestock production is thought to increase the susceptibility of the rangelands to wind erosion by reducing vegetation cover and modifying surface soil stability. However, research is yet to quantify the impacts of grazing land management on the erodibility of the Australian rangelands, or determine how these impacts vary among land types and over time. We present a simulation analysis that links a pasture growth and animal production model (GRASP) to the Australian Land Erodibility Model (AUSLEM) to evaluate the impacts of stocking rate, stocking strategy and land condition on the erodibility of four land types in western Queensland, Australia. Our results show that declining land condition, over stocking, and using inflexible stocking strategies have potential to increase land erodibility and amplify accelerated soil erosion. However, land erodibility responses to grazing are complex and influenced by land type sensitivities to different grazing strategies and local climate characteristics. Our simulations show that land types which are more resilient to livestock grazing tend to be least susceptible to accelerated wind erosion. Increases in land erodibility are found to occur most often during climatic transitions when vegetation cover is most sensitive to grazing pressure. However, grazing effects are limited during extreme wet and dry periods when the influence of climate on vegetation cover is strongest. Our research provides the opportunity to estimate the effects of different land management practices across a range of land types, and provides a better understanding of the mechanisms of accelerated erosion resulting from pastoral activities. The approach could help further assessment of land erodibility at a broader scale notably if combined with wind erosion models. (C) 2015 Elsevier B.V. All rights reserved.


英文关键词Aeolian Dust Soil erodibility Rangeland management Stocking rates Land degradation
类型Article
语种英语
国家Australia ; USA
收录类别SCI-E
WOS记录号WOS:000357146700007
WOS关键词BIOLOGICAL SOIL CRUSTS ; RAINFALL VARIABILITY ; NORTHERN AUSTRALIA ; ARID RANGELAND ; INNER-MONGOLIA ; CLIMATE-CHANGE ; CROP RESIDUES ; DUST ; MANAGEMENT ; MODEL
WOS类目Geography, Physical
WOS研究方向Physical Geography
来源机构New Mexico State University
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/185488
作者单位1.Griffith Univ, Griffith Sch Environm, Brisbane, Qld 4111, Australia;
2.New Mexico State Univ, MSC JER 3, USDA ARS Jornada Expt Range, Las Cruces, NM 88003 USA;
3.Australian Natl Univ, Fenner Sch Environm & Soc, Canberra, ACT 0200, Australia;
4.NSW Off Environm & Heritage, Sci Serv Div, Gunnedah, NSW 2380, Australia;
5.Dept Agr Fisheries & Forestry, Wilsonton, Qld 4350, Australia
推荐引用方式
GB/T 7714
Aubault, Helene,Webb, Nicholas P.,Strong, Craig L.,et al. Grazing impacts on the susceptibility of rangelands to wind erosion: The effects of stocking rate, stocking strategy and land condition[J]. New Mexico State University,2015,17:89-99.
APA Aubault, Helene,Webb, Nicholas P.,Strong, Craig L.,McTainsh, Grant H.,Leys, John F.,&Scanlan, Joe C..(2015).Grazing impacts on the susceptibility of rangelands to wind erosion: The effects of stocking rate, stocking strategy and land condition.AEOLIAN RESEARCH,17,89-99.
MLA Aubault, Helene,et al."Grazing impacts on the susceptibility of rangelands to wind erosion: The effects of stocking rate, stocking strategy and land condition".AEOLIAN RESEARCH 17(2015):89-99.
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