Alder trees enhance crop productivity and soil microbial biomass in tea plantations

doi:10.1016/j.apsoil.2015.05.012

	Alder trees enhance crop productivity and soil microbial biomass in tea plantations
	Mortimer,P. E.; Gui,H.; Xu,J.; Zhang,C.; Barrios,E.; Hyde,K. D.
	2015-11-01
发表期刊	APPLIED SOIL ECOLOGY
卷号	96 页码:25-32
摘要	Monoculture farming systems lead to soils depleted of nutrients and diminished microbial functional diversity, disrupting processes crucial to maintaining soil health. The planting of trees in these monoculture systems is one way to improve soil nutrition and biodiversity. Therefore, the objective was how planting the N-fixing tree Alnus nepalensis (7 years old), into monoculture tea (Camellia sinensis var., assamica) plantations (32 years old), influences the soil fungal and bacterial communities, and how this impacts on tea productivity. Soil samples (0-15, 15-30, 30-60 cm depths) were collected from plantations of monoculture tea and tea interplanted with A. nepalensis trees. The samples were analyzed for basic soil properties and nutrients. Phospholipid fatty-acid analyses were conducted on the soil samples to determine the microbial functional groups and biomass of bacterial and fungal communities. Biomass of soil fungi and bacteria were 41% and 10% higher in the tea + A. nepalensis sites than in the tea monoculture sites, respectively. These higher levels were recorded despite there being no changes in the diversity of the soil fungi and bacteria, or the soil nutrition, between the different sites. Tea productivity increased between 52% and 72%, and is attributed to the increases in the soil community biomass. Ectomycorrhizal biomass, as well as Gram-positive, Gram-negative, and actinomycetes bacterial biomass, all increased ranging from 10% to 83%. These groups of organisms have been shown to contain plant growth promoting characteristics, contributing toward increased crop productivity. We provide clear evidence that A. nepalensis in tea plantations promotes the growth and development of the soil microbial communities and that this impacts on above ground productivity. This study highlights the benefits of introducing N-fixing tree species, such as A. nepalensis, into monoculture systems, and how this relates to soil health and harvest yield. (C) 2015 Elsevier B.V. All rights reserved.
关键词	Agroforestry Alnus Nepalensis Crop Productivity Soil Bacteria Soil Fungi Tea Monoculture
DOI	10.1016/j.apsoil.2015.05.012
收录类别	SCI
语种	英语
WOS记录号	WOS:000361880400004
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/25171
专题	中国科学院东亚植物多样性与生物地理学重点实验室
推荐引用方式 GB/T 7714	Mortimer,P. E.,Gui,H.,Xu,J.,et al. Alder trees enhance crop productivity and soil microbial biomass in tea plantations[J]. APPLIED SOIL ECOLOGY,2015,96:25-32.
APA	Mortimer,P. E.,Gui,H.,Xu,J.,Zhang,C.,Barrios,E.,&Hyde,K. D..(2015).Alder trees enhance crop productivity and soil microbial biomass in tea plantations.APPLIED SOIL ECOLOGY,96,25-32.
MLA	Mortimer,P. E.,et al."Alder trees enhance crop productivity and soil microbial biomass in tea plantations".APPLIED SOIL ECOLOGY 96(2015):25-32.

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