干旱区生态环境知识资源中心(Arid): Do Woody Tree Thinning and Season Have Effect on Grass Species' Composition and Biomass in a Semi-Arid Savanna? The Case of a Semi-Arid Savanna, Southern Ethiopia

Arid

DOI	10.3389/fenvs.2021.692239
	Do Woody Tree Thinning and Season Have Effect on Grass Species' Composition and Biomass in a Semi-Arid Savanna? The Case of a Semi-Arid Savanna, Southern Ethiopia
	Hare, Malicha Loje; Xu, Xin Wen; Wang, Yong Dong; Yuan, You; Gedda, Abule Ebro
通讯作者	Hare, ML (corresponding author), Univ Chinese Acad Sci, Dept Ecol & Geog, Beijing, Peoples R China. ; Hare, ML ; Wang, YD (corresponding author), Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Urumqi, Peoples R China. ; Hare, ML ; Wang, YD (corresponding author), Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi, Peoples R China. ; Hare, ML (corresponding author), Pastoral Area Dev Commiss Oromia Reg State, Fed Democrat Republ Ethiopia, Finfine, Ethiopia.
来源期刊	FRONTIERS IN ENVIRONMENTAL SCIENCE
EISSN	2296-665X
出版年	2021
卷号	9
英文摘要	Encroachment of woody plants has negative effects on grass species and seriously challenging livestock production and pastoral livelihood in semi-arid savanna. The effect of thinning and season on grass species composition and biomass was investigated in lowland grazing area for three seasons. The study consisted of 15 plots (each 50 m x 50 m), thinned to differing intensities. The plots were located next to each other on a homogeneous area of 3.8 ha. Five thinning intensities (0, 25, 50, 75, and 100%) were allocated randomly to the plots and replicated three times. The 0% plot was left unthinned referred to as the control plot. The remaining plots were thinned to the equivalents of 25, 50, 75, and 100% of the tree density of that of the control plot. A two-way analysis of variance and Tukey Honest Significant Differences tests were used to compare responses of grass species. Ordination of variables was carried out by multivariate technique using correspondence analysis to explore the similarity relationship of plots, seasons and species. The differences in species composition and biomass in the control and the thinned plots were significant (p < 0.05). Higher grass species composition and biomass were documented in thinned plots than in the control plot. Species abundance in thinned plots ranged from 11 to 12, while that of the 0% plot was six species. Grass biomass (Kg ha-1) varied from 2,688.4 +/- 736.8 to 5,035.8 +/- 743.9 across thinned plots, whereas in the control plot the yield was 885.8 +/- 369.1. The result showed that grass species composition and biomass increased with the increasing intensity of thinning. Grass values appeared to be optimum at the heavy intensity of thinning woody plants. Seasons were also significant with the highest values recorded in the rainy season. Rainfall played an important role by interacting with thinning and influenced total grass values. Overall, thinning that combined improved soil moisture negatively influenced woody cover and enhanced grass species composition and biomass production. Thinning of bushes to the 75% of tree density would sustain the original savanna and maximize forage production for grazers.
英文关键词	thinning Acacia drepanobium grass species composition biomass
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:000683310600001
WOS关键词	BUSH ENCROACHMENT ; AFRICAN SAVANNAS ; LIVESTOCK PRODUCTION ; SHRUB ENCROACHMENT ; PLANT ENCROACHMENT ; RANGE CONDITION ; BORANA ; FIRE ; COVER ; CONSEQUENCES
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368611
作者单位	[Hare, Malicha Loje] Univ Chinese Acad Sci, Dept Ecol & Geog, Beijing, Peoples R China; [Hare, Malicha Loje; Xu, Xin Wen; Wang, Yong Dong; Yuan, You] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Urumqi, Peoples R China; [Hare, Malicha Loje; Xu, Xin Wen; Wang, Yong Dong; Yuan, You] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi, Peoples R China; [Hare, Malicha Loje] Pastoral Area Dev Commiss Oromia Reg State, Fed Democrat Republ Ethiopia, Finfine, Ethiopia; [Gedda, Abule Ebro] Wageningen Univ & Res SNV Ethiopia, Res & Innovat Dept, Finfine, Ethiopia
推荐引用方式 GB/T 7714	Hare, Malicha Loje,Xu, Xin Wen,Wang, Yong Dong,et al. Do Woody Tree Thinning and Season Have Effect on Grass Species' Composition and Biomass in a Semi-Arid Savanna? The Case of a Semi-Arid Savanna, Southern Ethiopia[J]. 中国科学院新疆生态与地理研究所,2021,9.
APA	Hare, Malicha Loje,Xu, Xin Wen,Wang, Yong Dong,Yuan, You,&Gedda, Abule Ebro.(2021).Do Woody Tree Thinning and Season Have Effect on Grass Species' Composition and Biomass in a Semi-Arid Savanna? The Case of a Semi-Arid Savanna, Southern Ethiopia.FRONTIERS IN ENVIRONMENTAL SCIENCE,9.
MLA	Hare, Malicha Loje,et al."Do Woody Tree Thinning and Season Have Effect on Grass Species' Composition and Biomass in a Semi-Arid Savanna? The Case of a Semi-Arid Savanna, Southern Ethiopia".FRONTIERS IN ENVIRONMENTAL SCIENCE 9(2021).