干旱区生态环境知识资源中心(Arid): Herbaceous vegetation changes along a bush encroachment intensity gradient in a montane area

Arid

DOI	10.1111/aje.13192
	Herbaceous vegetation changes along a bush encroachment intensity gradient in a montane area
	Stephen, Retselisitsoe J.; Chatanga, Peter; Seleteng-Kose, Lerato; Mapeshoane, Botle; Marake, Makoala V.
通讯作者	Chatanga, P
来源期刊	AFRICAN JOURNAL OF ECOLOGY
ISSN	0141-6707
EISSN	1365-2028
出版年	2023
卷号	61 期号:4 页码:907-918
英文摘要	Although bush encroachment in rangelands is a widely reported phenomenon, particularly in the arid and semi-arid regions of southern Africa, the knowledge of the impact of bush encroachment in montane rangelands is inadequate to support the sustainable management of these important ecosystems. This study assessed how herbaceous vegetation changes along a bush encroachment intensity gradient in the montane rangelands of Sehlabathebe in the Qacha's Nek District of Lesotho. Fifty 16 m(2) vegetation plots were randomly selected on a bush-encroached rangeland area. In each plot, bush species data, including canopy cover, richness, density and height, were recorded. The Braun-Blanquet method was used to assess herbaceous vegetation. The data were analysed using regression analysis, correlation analysis and ordination. Forb and graminoids attributes (Shannon-Wiener diversity, species richness, evenness and percentage cover) together with bush attributes (height, density, diversity, evenness, richness and cover %) were subjected to regression and ordination. Results revealed that bush cover was negatively correlated with both forb and graminoids vegetation cover. While forb species richness, evenness and Shannon-Wiener diversity increased with an increase in bush encroachment intensity, graminoid species abundance and diversity decreased. Overall, bush encroachment negatively impacted the structure and composition of graminoids. This implies that bush encroachment compromises the condition of montane rangelands because graminoids contribute to grazable forage more than forbs in these montane ecosystems.
英文关键词	biodiversity bush encroachment forb graminoid herbaceous vegetation montane rangeland
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001029004900001
WOS关键词	SHRUB ENCROACHMENT ; DIVERSITY ; GRASSLANDS ; MANAGEMENT ; RANGELANDS ; GRASSES ; AFRICA ; BORANA
WOS类目	Ecology
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/2XILL650/394990
推荐引用方式 GB/T 7714	Stephen, Retselisitsoe J.,Chatanga, Peter,Seleteng-Kose, Lerato,et al. Herbaceous vegetation changes along a bush encroachment intensity gradient in a montane area[J],2023,61(4):907-918.
APA	Stephen, Retselisitsoe J.,Chatanga, Peter,Seleteng-Kose, Lerato,Mapeshoane, Botle,&Marake, Makoala V..(2023).Herbaceous vegetation changes along a bush encroachment intensity gradient in a montane area.AFRICAN JOURNAL OF ECOLOGY,61(4),907-918.
MLA	Stephen, Retselisitsoe J.,et al."Herbaceous vegetation changes along a bush encroachment intensity gradient in a montane area".AFRICAN JOURNAL OF ECOLOGY 61.4(2023):907-918.