Arid
DOI10.1002/ldr.1145
DEGRADATION AND RECOVERY PROCESSES IN SEMI-ARID PATCHY RANGELANDS OF NORTHERN PATAGONIA, ARGENTINA
Kroepfl, A. I.1; Cecchi, G. A.2; Villasuso, N. M.1; Distel, R. A.3,4,5
通讯作者Distel, R. A.
来源期刊LAND DEGRADATION & DEVELOPMENT
ISSN1085-3278
出版年2013
卷号24期号:4页码:393-399
英文摘要

Vegetation in many arid and semi-arid shrublands frequently occurs in patches with high plant cover (shrub patches) interspersed in a low-cover herbaceous matrix (inter-shrub areas). We hypothesized that (a) livestock grazing is an important determinant of such spatial patterns of vegetation, and (b) redistribution of soil resources associated with shrub patches helps in the recovery of vegetation in inter-shrub areas. To test these hypotheses, we (a) used line transects to compare spatial variations in vegetation, soil microtopography, and soil physicochemical properties in grazed areas and areas protected from grazing since 1970, (b) added sediment and seeds to inter-shrub areas, and (c) measured resource redistribution after a wildfire. Results were consistent with the hypotheses. They indicated greater spatial heterogeneity in vegetation, soil microtopography and soil physicochemical properties in grazed areas than in protected areas, and that addition of sediment and seeds or redistribution of soil resources from shrub patches after a wildfire enhanced re-establishment of vegetation in degraded inter-shrub areas. As a synthesis, a conceptual model of degradation and recovery processes in semi-arid shrublands of Northern Patagonia is presented. Copyright (c) 2011 John Wiley & Sons, Ltd.


英文关键词semi-arid shrublands vegetation spatial pattern soil spatial pattern livestock grazing land degradation vegetation recovery Patagonia
类型Article
语种英语
国家Argentina
收录类别SCI-E
WOS记录号WOS:000321871000009
WOS关键词NORTHEASTERN PATAGONIA ; LAND DEGRADATION ; ARID ECOSYSTEMS ; VEGETATION ; MONTE ; SHRUBLANDS ; DYNAMICS ; DESERTIFICATION ; ESTABLISHMENT ; FEEDBACKS
WOS类目Environmental Sciences ; Soil Science
WOS研究方向Environmental Sciences & Ecology ; Agriculture
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/178783
作者单位1.Univ Nacl Comahue, CURZA, RA-8500 Viedma, Argentina;
2.INTA, Estn Expt Valle Inferior Rio Negro, RA-8500 Viedma, Argentina;
3.Univ Nacl Sur, Dept Agron, RA-8000 Bahia Blanca, Buenos Aires, Argentina;
4.Univ Nacl Sur, Ctr Recursos Nat Renovables Zona Semiarida CERZOS, RA-8000 Bahia Blanca, Buenos Aires, Argentina;
5.Consejo Nacl Invest Cient & Tecn, RA-8000 Bahia Blanca, Buenos Aires, Argentina
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Kroepfl, A. I.,Cecchi, G. A.,Villasuso, N. M.,et al. DEGRADATION AND RECOVERY PROCESSES IN SEMI-ARID PATCHY RANGELANDS OF NORTHERN PATAGONIA, ARGENTINA[J],2013,24(4):393-399.
APA Kroepfl, A. I.,Cecchi, G. A.,Villasuso, N. M.,&Distel, R. A..(2013).DEGRADATION AND RECOVERY PROCESSES IN SEMI-ARID PATCHY RANGELANDS OF NORTHERN PATAGONIA, ARGENTINA.LAND DEGRADATION & DEVELOPMENT,24(4),393-399.
MLA Kroepfl, A. I.,et al."DEGRADATION AND RECOVERY PROCESSES IN SEMI-ARID PATCHY RANGELANDS OF NORTHERN PATAGONIA, ARGENTINA".LAND DEGRADATION & DEVELOPMENT 24.4(2013):393-399.
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