干旱区生态环境知识资源中心(Arid): Root distribution and productivity in a poplar tree plus alfalfa silvopastoral system in northwest China's Xinjiang Province

Arid

DOI	10.1007/s10457-019-00466-5
	Root distribution and productivity in a poplar tree plus alfalfa silvopastoral system in northwest China's Xinjiang Province
	Yang, T.1; Zhu, Y.2; Duan, Z. P.1; Lu, W. H.3; Zhang, F. F.3; Wan, S. M.4; Xu, W. X.5; Zhang, W.1; Li, L. H.1
通讯作者	Zhang, W. ; Li, L. H.
来源期刊	AGROFORESTRY SYSTEMS
ISSN	0167-4366
EISSN	1572-9680
出版年	2020
卷号	94 期号:3 页码:997-1010
英文摘要	Silvopastoral systems have been a way to address issues related to land use and desertification on the fringe of cities, particularly in northwest China where fast-growing urban population and threat of desertification have become serious problems. A field experiment conducted in northwest China evaluated the root distribution and interspecific interaction between the poplar (Populus L.) and alfalfa (Medicago sativa L.) in a silvopastoral system. Roots were sampled once every 15 d using an auger sampling method in a seven-year-old poplar tree + three-year-old alfalfa silvopastoral system, a three-year-old sole alfalfa, and a seven-year-old sole poplar. The results showed that intercropping had a negative effect on the root length density (RLD) of alfalfa and reduced the average root diameter (ARD) of alfalfa at 20-60 cm soil depth. The specific root length (SRL) of alfalfa in silvopastoral system was higher compared to sole cropping. In contrast, intercropping with alfalfa had a positive effect on the RLD and ARD of poplar at the alfalfa grown areas at 0-20 cm soil depth, but less effect on the SRL of poplar. Intercropping caused the reduction of alfalfa yield, but had not significant effect on the yield of stem wood volume of poplar. Calculating the land equivalent ratio in a poplar tree + alfalfa silvopastoral system, it showed that this system was advantageous in the utilization of resources and had a higher productivity compared with sole cropping. In conclusion, root competition and interactions between two intercropped species affects yield of alfalfa and the root distribution of intercropped species in a poplar + alfalfa silvopastoral system.
英文关键词	Alfalfa yield Average root diameter (ARD) Land equivalent ratio (LER) Root length density (RLD) Intercropping Specific root length (SRL)
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000495287500002
WOS关键词	INTERSPECIFIC INTERACTIONS ; AGROFORESTRY SYSTEMS ; NITROGEN-FIXATION ; COMPETITION ; WATER ; INTERCROPS ; DYNAMICS ; RATIOS ; GROWTH ; LENGTH
WOS类目	Agronomy ; Forestry
WOS研究方向	Agriculture ; Forestry
EI主题词	2019-11-09
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310798
作者单位	1.Shihezi Univ, Coll Agr, Shihezi 832003, Xinjiang, Peoples R China; 2.Shihezi Univ, Coll Pharm, Shihezi 832002, Xinjiang, Peoples R China; 3.Shihezi Univ, Coll Anim Sci & Technol, Shihezi 832003, Xinjiang, Peoples R China; 4.Tarim Univ, Coll Plant Sci, Alaer 843300, Xinjiang, Peoples R China; 5.Xinjiang Agr Univ, Coll Agr, Urumqi 830052, Xinjiang, Peoples R China
推荐引用方式 GB/T 7714	Yang, T.,Zhu, Y.,Duan, Z. P.,et al. Root distribution and productivity in a poplar tree plus alfalfa silvopastoral system in northwest China's Xinjiang Province[J],2020,94(3):997-1010.
APA	Yang, T..,Zhu, Y..,Duan, Z. P..,Lu, W. H..,Zhang, F. F..,...&Li, L. H..(2020).Root distribution and productivity in a poplar tree plus alfalfa silvopastoral system in northwest China's Xinjiang Province.AGROFORESTRY SYSTEMS,94(3),997-1010.
MLA	Yang, T.,et al."Root distribution and productivity in a poplar tree plus alfalfa silvopastoral system in northwest China's Xinjiang Province".AGROFORESTRY SYSTEMS 94.3(2020):997-1010.