干旱区生态环境知识资源中心(Arid): The effects of Acacia mearnsii (black wattle) on soil chemistry and grass biomass production in a South African semi-arid rangeland: implications for rangeland rehabilitation

Arid

DOI	10.2989/10220119.2021.1875048
	The effects of Acacia mearnsii (black wattle) on soil chemistry and grass biomass production in a South African semi-arid rangeland: implications for rangeland rehabilitation
	Gwate, Onalenna; Mantel, Sukhmani K.; Gibson, Lesley A.; Munch, Zahn; Gusha, Bukho; Palmer, Anthony R.
通讯作者	Gwate, O (corresponding author), Rhodes Univ, Inst Water Res, Makhanda, South Africa. ; Gwate, O (corresponding author), Lupane State Univ, Lupane, Zimbabwe.
来源期刊	AFRICAN JOURNAL OF RANGE & FORAGE SCIENCE
ISSN	1022-0119
EISSN	1727-9380
出版年	2021-03
英文摘要	Globally, grasslands are under threat from woody encroachment by invasive alien plants and this undermines grass production. The study sought to determine the effects of Acacia mearnsii clearing on soil physico-chemical properties and grass production. Soil samples were collected from three A. mearnsii invasion statuses and analysed for representative physico-chemical variables. Using line transects and a disc pasture meter (DPM) approaches, equations were developed to predict annual grass dry matter production in areas cleared of A. mearnsii. A. mearnsii significantly (p < 0.05) altered most of the physico-chemical soil characteristics that affected grass production. Predicted grass dry matter production from sites cleared of A. mearnsii ranged from 284 to 362 g m(-2) y(-1). These production rates were similar to those from uninvaded landscapes, suggesting that background grass production can still be attained even if there is no active soil management. Autogenic recovery thresholds have not been surpassed despite a long history of landscape invasion in the area. Management of invaded grasslands should be informed by an appreciation of local soil background characteristics. The equations developed for grass dry matter prediction may enable farmers to non-destructively estimate forage availability and fuel loads.
英文关键词	dry matter production exclosure line transect principal components analysis soil properties
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000625674300001
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/2XILL650/367503
作者单位	[Gwate, Onalenna; Mantel, Sukhmani K.; Gusha, Bukho; Palmer, Anthony R.] Rhodes Univ, Inst Water Res, Makhanda, South Africa; [Gibson, Lesley A.] Univ Edinburgh, Sch Engn, Edinburgh, Midlothian, Scotland; [Munch, Zahn] Univ Stellenbosch, Dept Geog & Environm Studies, Matieland, South Africa; [Gusha, Bukho; Palmer, Anthony R.] Agr Res Council, Anim Prod Inst, Makhanda, South Africa; [Gwate, Onalenna] Lupane State Univ, Lupane, Zimbabwe
推荐引用方式 GB/T 7714	Gwate, Onalenna,Mantel, Sukhmani K.,Gibson, Lesley A.,et al. The effects of Acacia mearnsii (black wattle) on soil chemistry and grass biomass production in a South African semi-arid rangeland: implications for rangeland rehabilitation[J],2021.
APA	Gwate, Onalenna,Mantel, Sukhmani K.,Gibson, Lesley A.,Munch, Zahn,Gusha, Bukho,&Palmer, Anthony R..(2021).The effects of Acacia mearnsii (black wattle) on soil chemistry and grass biomass production in a South African semi-arid rangeland: implications for rangeland rehabilitation.AFRICAN JOURNAL OF RANGE & FORAGE SCIENCE.
MLA	Gwate, Onalenna,et al."The effects of Acacia mearnsii (black wattle) on soil chemistry and grass biomass production in a South African semi-arid rangeland: implications for rangeland rehabilitation".AFRICAN JOURNAL OF RANGE & FORAGE SCIENCE (2021).