干旱区生态环境知识资源中心(Arid): Woody vegetation change over more than 30 years in the interior duneveld of the Kalahari Gemsbok National Park

Arid

DOI	10.38201/btha.abc.v50.i1.2
	Woody vegetation change over more than 30 years in the interior duneveld of the Kalahari Gemsbok National Park
	van der Merwe, H.; van Rooyen, N.; Bezuidenhout, H.; Bothma, J. du P.; van Rooyen, M. W.
通讯作者	van der Merwe, H (corresponding author), South African Environm Observat Network SAEON, Arid Lands Node, Kimberley, South Africa. ; van der Merwe, H (corresponding author), Univ Cape Town, Dept Biol Sci, Cape Town, South Africa.
来源期刊	BOTHALIA
ISSN	0006-8241
EISSN	2311-9284
出版年	2020
卷号	50 期号:1
英文摘要	Background and objectives: Long-term studies of woody plants in South Africa are scarce. This study, initiated in the late 1970s, therefore aids understanding of vegetation dynamics in the southern Kalahari by investigating woody vegetation change at and away from a watering point. Methods: At three sites, all woody individuals were counted by species in plots 0.5 or 1 ha in size. Seedlings were noted separately from the >0.2 m group of individuals. Results: Vachellia erioloba and shrub density decreased over time whereas dwarf shrub species' numbers fluctuated markedly. Additionally, no increase in density of known bush encroaching species (e.g. Grewia flava, Rhigozum trichotomum and Senegalia mellifera) was found in this large conservation area. Discussion and conclusion: The changes in density of the woody species seem to point to the importance of particular rainfall patterns or sequences of events over different years that are responsible for these changes in the southern Kalahari, and the evident lack of bush encroachment in this conservation area supports the notion that bush encroachment in arid savannas is driven primarily by land-use practices and not by elevated carbon dioxide levels that are sometimes provided as cause for encroachment.
英文关键词	bush encroachment conservation area Kgalagadi Transfrontier Park southern Kalahari Vachellia erioloba vegetation dynamics watering point
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000648570200010
WOS关键词	ACACIA-ERIOLOBA ; ESTABLISHMENT ; ENCROACHMENT ; GERMINATION ; HERBIVORES ; PREDATION ; RAINFALL
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/369183
作者单位	[van der Merwe, H.; van Rooyen, N.; van Rooyen, M. W.] South African Environm Observat Network SAEON, Arid Lands Node, Kimberley, South Africa; [van der Merwe, H.] Univ Cape Town, Dept Biol Sci, Cape Town, South Africa; [Bezuidenhout, H.] South African Natl Pk SANPk, Sci Serv, Kimberley, South Africa; [Bezuidenhout, H.] Univ South Africa, Appl Behav Ecol & Ecosyst Res Unit, Pretoria, South Africa; [Bothma, J. du P.] Univ Pretoria, Ctr Wildlife Management, Pretoria, South Africa; [van Rooyen, M. W.] Univ Pretoria, Dept Plant & Soil Sci, Pretoria, South Africa
推荐引用方式 GB/T 7714	van der Merwe, H.,van Rooyen, N.,Bezuidenhout, H.,et al. Woody vegetation change over more than 30 years in the interior duneveld of the Kalahari Gemsbok National Park[J],2020,50(1).
APA	van der Merwe, H.,van Rooyen, N.,Bezuidenhout, H.,Bothma, J. du P.,&van Rooyen, M. W..(2020).Woody vegetation change over more than 30 years in the interior duneveld of the Kalahari Gemsbok National Park.BOTHALIA,50(1).
MLA	van der Merwe, H.,et al."Woody vegetation change over more than 30 years in the interior duneveld of the Kalahari Gemsbok National Park".BOTHALIA 50.1(2020).