干旱区生态环境知识资源中心(Arid): Seasonal Herbaceous Structure and Biomass Production Response to Rainfall Reduction and Resting Period in the Semi-Arid Grassland Area of South Africa

Arid

DOI	10.3390/agronomy10111807
	Seasonal Herbaceous Structure and Biomass Production Response to Rainfall Reduction and Resting Period in the Semi-Arid Grassland Area of South Africa
	Magandana, Thabo Patrick; Hassen, Abubeker; Tesfamariam, Eyob Habte
通讯作者	Hassen, A
来源期刊	AGRONOMY-BASEL
EISSN	2073-4395
出版年	2020
卷号	10 期号:11
英文摘要	Reduction in rainfall is amongst the major climate change manifestation phenomena, and will have a significant impact on grassland ecosystems. A split plot experimental design was used to investigate the interactive effect of rainfall reduction and resting period (RP) (70 and 90 days) on herbaceous biomass production and rainwater use efficiency in semi-arid grasslands of South Africa. Different levels of rainfall reduction (RD) were setup as main plot treatments while resting periods were set as sub-plot treatments. Four 0.5 m x 0.5 m quadrats were harvested in spring, summer and autumn of 2016/17 and 2017/18 from each sub-plot to determine herbaceous species structure, aboveground biomass production and rainwater use efficiency (RUE). Grasses were most affected by rainfall reduction than forbs at the 30% and 60% RD levels. In contrast, the forbs were more affected at 15% RD while the grasses showed resilience up to 15% reduction in rainfall. The RUE was higher at 30% RD and 70 days RP in almost all three seasons, except in spring 2016/17. Our results show that herbaceous above ground biomass showed resilience up to 15% reduction but were affected more as the rainfall reduction exceeded 30%. The future predicted reduction in rainfall may result in domination of forbs and increaser grass species in the grassland.
英文关键词	forbs grass decreasers rainwater use efficiency
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000592710100001
WOS关键词	DESERT GRASSLAND ; CLIMATE-CHANGE ; SOIL-WATER ; DROUGHT ; PRECIPITATION ; ECOSYSTEM ; DEFOLIATION ; GRASSES ; COMMUNITIES ; VARIABILITY
WOS类目	Agronomy ; Plant Sciences
WOS研究方向	Agriculture ; Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327661
作者单位	[Magandana, Thabo Patrick; Hassen, Abubeker] Univ Pretoria, Dept Anim Sci, Fac Nat & Agr Sci, P Bag X 20, ZA-0028 Pretoria, South Africa; [Tesfamariam, Eyob Habte] Univ Pretoria, Dept Plant & Soil Sci, Fac Nat & Agr Sci, P Bag X 20, ZA-0028 Pretoria, South Africa
推荐引用方式 GB/T 7714	Magandana, Thabo Patrick,Hassen, Abubeker,Tesfamariam, Eyob Habte. Seasonal Herbaceous Structure and Biomass Production Response to Rainfall Reduction and Resting Period in the Semi-Arid Grassland Area of South Africa[J],2020,10(11).
APA	Magandana, Thabo Patrick,Hassen, Abubeker,&Tesfamariam, Eyob Habte.(2020).Seasonal Herbaceous Structure and Biomass Production Response to Rainfall Reduction and Resting Period in the Semi-Arid Grassland Area of South Africa.AGRONOMY-BASEL,10(11).
MLA	Magandana, Thabo Patrick,et al."Seasonal Herbaceous Structure and Biomass Production Response to Rainfall Reduction and Resting Period in the Semi-Arid Grassland Area of South Africa".AGRONOMY-BASEL 10.11(2020).