干旱区生态环境知识资源中心(Arid): Allometric models for estimating leaf biomass of sisal in a semi-arid environment in Kenya

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DOI	10.1016/j.biombioe.2021.106294
	Allometric models for estimating leaf biomass of sisal in a semi-arid environment in Kenya
	Vuorinne, Ilja; Heiskanen, Janne; Maghenda, Marianne; Mwangala, Lucas; Muukkonen, Petteri; Pellikka, Petri K. E.
通讯作者	Vuorinne, I (corresponding author), Univ Helsinki, Dept Geosci & Geog, Helsinki, Finland.
来源期刊	BIOMASS & BIOENERGY
ISSN	0961-9534
EISSN	1873-2909
出版年	2021
卷号	155
英文摘要	Biomass is a key variable for crop monitoring and for assessing carbon stocks and bioenergy potential. This study aimed to develop an allometric model for predicting the dry leaf biomass of sisal, an agave plant with crassulacean acid metabolism grown for fibre production in the tropics and subtropics and whose biomass can be utilised as a feedstock to produce biogas through anaerobic digestion. The allometric model was used to estimate leaf biomass and productivity across different stand ages in a sisal plantation in semi-arid region in south-east Kenya (annual rainfall 611 mm and temperature 24.9 degrees C). Based on a sample of 38 leaves, the best predictor for biomass was leaf maximum width and plant height used as a combined variable in a log-log regression model (cross-validated R2 = 0.96 and root-mean-square error = 7.69 g). The mean productivity in nine 26- to 36month-old plots was 11.1 Mg ha- 1 yr- 1, which could potentially yield approximately 3000 m3 CH4 ha- 1 yr- 1. The leaf biomass in 55 field plots (400 m2 in area) ranged from 2.7 to 42.7 Mg ha- 1, with mean at 13.5 Mg ha- 1, which equals to 6.3 Mg C ha- 1. The yielded allometric equations can be utilised for predicting the leaf biomass of sisal in similar agro-ecological zones. The estimates on plantation biomass can be used in assessing the role of sisal plantations as a regional carbon storage. In addition, the results provide reference on the productivity of agave and crassulacean acid metabolism in semi-arid regions of East Africa, where such reports are few.
英文关键词	Agave Crassulacean acid metabolism CAM Carbon Productivity Bioenergy
类型	Article
语种	英语
开放获取类型	hybrid, Green Published
收录类别	SCI-E
WOS记录号	WOS:000722111100002
WOS关键词	CAM PLANT ; ABOVEGROUND BIOMASS ; AGAVE ; PRODUCTIVITY ; CARBON ; FIBER ; VALIDATION ; FEEDSTOCKS ; NITROGEN ; SYSTEMS
WOS类目	Agricultural Engineering ; Biotechnology & Applied Microbiology ; Energy & Fuels
WOS研究方向	Agriculture ; Biotechnology & Applied Microbiology ; Energy & Fuels
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/374066
作者单位	[Vuorinne, Ilja; Heiskanen, Janne; Muukkonen, Petteri; Pellikka, Petri K. E.] Univ Helsinki, Dept Geosci & Geog, Helsinki, Finland; [Heiskanen, Janne] Univ Helsinki, Inst Atmospher & Earth Syst Res, Fac Sci, Helsinki, Finland; [Maghenda, Marianne; Mwangala, Lucas] Taita Taveta Univ, Sch Agr Earth Environm Sci, Voi, Kenya
推荐引用方式 GB/T 7714	Vuorinne, Ilja,Heiskanen, Janne,Maghenda, Marianne,et al. Allometric models for estimating leaf biomass of sisal in a semi-arid environment in Kenya[J],2021,155.
APA	Vuorinne, Ilja,Heiskanen, Janne,Maghenda, Marianne,Mwangala, Lucas,Muukkonen, Petteri,&Pellikka, Petri K. E..(2021).Allometric models for estimating leaf biomass of sisal in a semi-arid environment in Kenya.BIOMASS & BIOENERGY,155.
MLA	Vuorinne, Ilja,et al."Allometric models for estimating leaf biomass of sisal in a semi-arid environment in Kenya".BIOMASS & BIOENERGY 155(2021).