Arid
DOI10.1046/j.1365-2699.1999.00131.x
The impacts of people and livestock on topographically diverse open wood- and shrub-lands in arid north-west Namibia
Sullivan, S
通讯作者Sullivan, S
会议名称Workshop on Tropical Open Woodlands
会议日期DEC 10, 1997
会议地点LEEDS, ENGLAND
英文摘要

1. It is generally considered that the open woodlands of north-west Namibia are experiencing widespread degradation due to over-use of resources by local herders.


2. Data are presented regarding community floristics, diversity, density, cover and population structure for woody vegetation. These are analysed in relation to abiotic factors of topography and substrate, and to settlement impacts represented indirectly by distance from settlement and directly by measures of branch cutting and browsing.


3. None of the vegetation indices upheld predicted patterns of degradation except on a small scale, confined to within settlements. Moreover, in nearly all cases, local settlement effects were within the range of variability observed at larger scales.


4. It is concluded that continuing perceptions and fears of degradation in this area relate more to ideology than evidence. In particular, it is argued that factors conferring resilience and persistence on both the environment and the regional herding economy are obscured by: (1) disregard for the implications of spatial and temporal scale in interpretations of ecological data; (2) a conceptual adherence to equilibrium dynamics that stresses density-dependent impacts of people and livestock over and above the role of abiotic factors in constraining and driving primary productivity; and (3) remnants of a colonial ideology, which tends to view 'traditional communal farming' practices as environmentally degrading.


英文关键词open woodland degradation desertification pastoralism policy scale biotic and abiotic factors traditional communal farming Namibia
来源出版物GLOBAL ECOLOGY AND BIOGEOGRAPHY
ISSN0960-7447
出版年1999
卷号8
期号3-4
页码257-277
出版者BLACKWELL SCIENCE LTD
类型Article;Proceedings Paper
语种英语
国家England
收录类别CPCI-S ; SCI-E
WOS记录号WOS:000084868000008
WOS关键词DESERT ; VEGETATION ; ECOLOGY ; REGION ; EQUILIBRIUM ; DEGRADATION ; CATCHMENT ; STABILITY ; COMMUNITY ; PATTERNS
WOS类目Ecology ; Geography, Physical
WOS研究方向Environmental Sciences & Ecology ; Physical Geography
资源类型会议论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/292642
作者单位(1)Univ London Sch Oriental & African Studies, Dept Anthropol & Sociol, London WC1H 0XG, England;(2)Univ London Sch Oriental & African Studies, Dept Geog, London WC1H 0XG, England
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Sullivan, S. The impacts of people and livestock on topographically diverse open wood- and shrub-lands in arid north-west Namibia[C]:BLACKWELL SCIENCE LTD,1999:257-277.
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