Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1002/ldr.2176 |
RECONSTRUCTING RECENT LAND DEGRADATION IN THE SEMI-ARID KAROO OF SOUTH AFRICA: A PALAEOECOLOGICAL STUDY AT COMPASSBERG, EASTERN CAPE | |
Mighall, T. M.1; Foster, I. D. L.2,3; Rowntree, K. M.3; Boardman, J.4,5 | |
通讯作者 | Mighall, T. M. |
来源期刊 | LAND DEGRADATION & DEVELOPMENT
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ISSN | 1085-3278 |
出版年 | 2012 |
卷号 | 23期号:6页码:523-533 |
英文摘要 | This paper forms part of an ongoing, multidisciplinary study of land degradation in the Eastern Cape, South Africa. A series of studies of erosion, runoff and the development of gullies, badlands and sediment delivery to small farm reservoirs in the Sneeuberg uplands have shown that the semi-arid Karoo is vulnerable to soil erosion. Cereal cultivation and increased livestock numbers are thought to have played a major role in triggering erosion over the last 200?years. To test this assumption, we analysed pollen, non-pollen palynomorphs and microscopic charcoal from sediments that have infilled one farm dam since the 1930s and which is located in the Sneeuberg uplands of the Eastern Cape. The results, supported by sediment source tracing, indicate that soil erosion was closely associated with agricultural activity. The reconstructions appear to be in agreement with historical documentary records. However, records of livestock stocking densities were found to be insufficiently detailed to enable direct matching against microfossil proxies for grazing, especially the coprophilous fungal spore, Sporormiella type. This study demonstrates the importance of combining sediment tracing techniques with palynological analyses to provide a more informed interpretation of land use changes as recorded by lake and reservoir sediments. Copyright (c) 2012 John Wiley & Sons, Ltd. |
英文关键词 | Karoo pollen non-pollen palynomorphs soil erosion cultivation grazing coprophilous fungi |
类型 | Article |
语种 | 英语 |
国家 | Scotland ; England ; South Africa |
收录类别 | SCI-E |
WOS记录号 | WOS:000312541100003 |
WOS关键词 | NON-POLLEN PALYNOMORPHS ; SOIL-EROSION ; VEGETATION CHANGES ; LAKE-SEDIMENTS ; DEGRADED LAND ; SPORES ; SNEEUBERG ; DESERTIFICATION ; NETHERLANDS ; SURFACE |
WOS类目 | Environmental Sciences ; Soil Science |
WOS研究方向 | Environmental Sciences & Ecology ; Agriculture |
来源机构 | University of Oxford |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/173975 |
作者单位 | 1.Univ Aberdeen, Dept Geog & Environm, Sch Geosci, Aberdeen AB24 3UF, Scotland; 2.Univ Northampton, Sch Sci & Technol, Northampton NN2 6JD, England; 3.Rhodes Univ, Dept Geog, ZA-6140 Grahamstown, Eastern Cape, South Africa; 4.Univ Oxford, Ctr Environm, Environm Change Inst, Oxford OX1 3QY, England; 5.Univ Cape Town, Dept Environm & Geog Sci, ZA-7700 Rondebosch, South Africa |
推荐引用方式 GB/T 7714 | Mighall, T. M.,Foster, I. D. L.,Rowntree, K. M.,et al. RECONSTRUCTING RECENT LAND DEGRADATION IN THE SEMI-ARID KAROO OF SOUTH AFRICA: A PALAEOECOLOGICAL STUDY AT COMPASSBERG, EASTERN CAPE[J]. University of Oxford,2012,23(6):523-533. |
APA | Mighall, T. M.,Foster, I. D. L.,Rowntree, K. M.,&Boardman, J..(2012).RECONSTRUCTING RECENT LAND DEGRADATION IN THE SEMI-ARID KAROO OF SOUTH AFRICA: A PALAEOECOLOGICAL STUDY AT COMPASSBERG, EASTERN CAPE.LAND DEGRADATION & DEVELOPMENT,23(6),523-533. |
MLA | Mighall, T. M.,et al."RECONSTRUCTING RECENT LAND DEGRADATION IN THE SEMI-ARID KAROO OF SOUTH AFRICA: A PALAEOECOLOGICAL STUDY AT COMPASSBERG, EASTERN CAPE".LAND DEGRADATION & DEVELOPMENT 23.6(2012):523-533. |
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