Arid
DOI10.1016/j.jaridenv.2013.07.004
Rangeland management impacts on the properties of clayey soils along grazing gradients in the semi-arid grassland biome of South Africa
Kotze, E.1; Sandhage-Hofmann, A.2; Meinel, J. -A.2; du Preez, C. C.1; Amelung, W.2
通讯作者Sandhage-Hofmann, A.
来源期刊JOURNAL OF ARID ENVIRONMENTS
ISSN0140-1963
EISSN1095-922X
出版年2013
卷号97页码:220-229
英文摘要

The grassland biome of South Africa is a major resource for livestock farming; yet the soils of these rangelands are stressed differently by various management systems. The aim of this study was to investigate how basic soil properties respond to different management systems. For this purpose we sampled rangeland management systems under communal (continuous grazing), commercial (rotational grazing) and land reform (mixture of grazing systems) farming. Within each of these systems a grazing gradient was identified with decreasing grazing pressure with increasing distance to the water points. Results showed that communal farms with continuous grazing were generally depleted in the respective nutrient stocks. The depletion increased with rising grazing pressure. Along that line there was a breakdown of macroaggregates with losses of the C and N stored therein. However, the commercial farms also exhibited a decline of macroaggregates and their associated C content nearby the water points. Aggregate fractionation is a sensitive indicator for detecting the beginning of soil degradation in this biome; yet, degradation was less pronounced under the rotational grazing of the commercial farms than under communal property right conditions. Hence, soil analyses confirm that fences and appropriate grazing periods are needed to manage these rangelands sustainably. (C) 2013 Elsevier Ltd. All rights reserved.


英文关键词Continuous grazing Piosphere Rangeland management systems Rotational grazing Soil aggregates Soil organic matter
类型Article
语种英语
国家South Africa ; Germany
收录类别SCI-E
WOS记录号WOS:000326361800027
WOS关键词AGGREGATE STABILITY ; PHYSICAL-PROPERTIES ; LAND DEGRADATION ; WATERING POINTS ; NORTHERN CHINA ; INNER-MONGOLIA ; LOESS PLATEAU ; CARBON ; QUALITY ; NITROGEN
WOS类目Ecology ; Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/178084
作者单位1.Univ Orange Free State, Dept Soil Crop & Climate Sci, ZA-9300 Bloemfontein, South Africa;
2.Univ Bonn, Inst Crop Sci & Resource Conservat Soil Sci & Soi, D-53115 Bonn, Germany
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Kotze, E.,Sandhage-Hofmann, A.,Meinel, J. -A.,et al. Rangeland management impacts on the properties of clayey soils along grazing gradients in the semi-arid grassland biome of South Africa[J],2013,97:220-229.
APA Kotze, E.,Sandhage-Hofmann, A.,Meinel, J. -A.,du Preez, C. C.,&Amelung, W..(2013).Rangeland management impacts on the properties of clayey soils along grazing gradients in the semi-arid grassland biome of South Africa.JOURNAL OF ARID ENVIRONMENTS,97,220-229.
MLA Kotze, E.,et al."Rangeland management impacts on the properties of clayey soils along grazing gradients in the semi-arid grassland biome of South Africa".JOURNAL OF ARID ENVIRONMENTS 97(2013):220-229.
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