Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.2989/10220119.2013.772539 |
Rangeland degradation in semi-arid Swaziland: effects of dip-tanks on herbaceous vegetation and soil properties | |
Tefera, Solomon | |
通讯作者 | Tefera, Solomon |
来源期刊 | AFRICAN JOURNAL OF RANGE & FORAGE SCIENCE
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ISSN | 1022-0119 |
EISSN | 1727-9380 |
出版年 | 2013 |
卷号 | 30期号:3页码:127-140 |
英文摘要 | This study investigated dip-tank use effects on herbaceous vegetation and soil, and relationships between environmental and species variables. Eight dip-tanks, three each in sandy (DPBS) and loamy (DYRL) soils, and two in stony (ROSG) soils were used. Data were collected at 50, 100, 150, 300, 500, 700 and 900 m from each dip-tank. In DPBS, phosphorus and potassium contents were highest (P < 0.05) on approaching dip-tanks. In all soils, forb and perennial grass abundances showed significant differences but there were no significant trends with distance. These variables are not sufficiently sensitive to form gradients or the gradient is diminished with heavy grazing. In DPBS, the canonical correspondence analysis showed negative correlation of distance with bareness, the abundance of Aristida rhiniochloa and Cynodon dactylon, which may suggest these variables may respond to grazing gradients around dip-tanks, but this pattern was not established on the other soil types. Therefore, caution is required in drawing conclusions of the piosphere effect around focal points. The abundance of highly palatable species was low except for Panicum maximum in DPBS. It is concluded that vegetation and soil changes are driven by abiotic (site and soil) and biotic (livestock) factors that have different influences at different scales. Therefore, any rangeland utilisation and management program should consider these drivers. |
英文关键词 | bare patch forbs grass highly palatable Lowveld |
类型 | Article |
语种 | 英语 |
国家 | South Africa |
收录类别 | SCI-E |
WOS记录号 | WOS:000327079500002 |
WOS关键词 | LAND-USE ; MANAGEMENT-SYSTEMS ; CHIHUAHUAN DESERT ; SOUTH-AFRICA ; GRADIENTS ; BOTSWANA ; WATER ; NONEQUILIBRIUM ; WATERPOINTS ; SHRUBLANDS |
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/2XILL650/175541 |
作者单位 | (1)Univ Ft Hare, Dept Livestock & Pasture Sci, ZA-5700 Alice, South Africa |
推荐引用方式 GB/T 7714 | Tefera, Solomon. Rangeland degradation in semi-arid Swaziland: effects of dip-tanks on herbaceous vegetation and soil properties[J],2013,30(3):127-140. |
APA | Tefera, Solomon.(2013).Rangeland degradation in semi-arid Swaziland: effects of dip-tanks on herbaceous vegetation and soil properties.AFRICAN JOURNAL OF RANGE & FORAGE SCIENCE,30(3),127-140. |
MLA | Tefera, Solomon."Rangeland degradation in semi-arid Swaziland: effects of dip-tanks on herbaceous vegetation and soil properties".AFRICAN JOURNAL OF RANGE & FORAGE SCIENCE 30.3(2013):127-140. |
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