Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1002/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
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ISSN | 1085-3278 |
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 |
推荐引用方式 GB/T 7714 | 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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文件名称/大小 | 资源类型 | 版本类型 | 开放类型 | 使用许可 | ||
DEGRADATION AND RECO(169KB) | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 |
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