The influence of plant root system architectural properties upon the stability of loess hillslopes, Northeast Qinghai, China

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > Journal of Mountain Science > Journal of Mountain Science-2016 > Vol13 No.5

	The influence of plant root system architectural properties upon the stability of loess hillslopes, Northeast Qinghai, China
	FU Jiang-tao; HU Xia-song; BRIERLEY Gary; QIAO Na; YU Qin-qin; LU Hai-jing; LI Guo-rong; ZHU Hai-li
刊名	Journal of Mountain Science
	2016-05
卷号	13 期号:5 页码:785-801
关键词	Cold region Semiarid region Soil reinforcement Hillslope stability Root system architectural indices Plateau
ISSN号	1672-6316
通讯作者	HU Xia-song ; BRIERLEY Gary
英文摘要	To investigate the influence of root system architectural properties of three indigenous (cold-adapted) shrubs on the hillslope stability of loess deposits in the Xining Basin, northeast part of Qinghai-Tibet Plateau (QTP), indoor direct shear tests have been conducted on the remolded rooted soil of three shrubs. Test results show that root system architectural indices (root area ratio (RAR), root length density (RLD) and root density (RD)) of the shrubs decline with depth and the relationship between RAR, RD and depth is exponential, while a power relationship describes the relationship between RLD and depth. The cohesion force of remolded rooted soil for the shrubs initially increases with depth, but it then demonstrates a slightly decreasing trend, which can be described with a power relationship. Power relationships also describe relationships between cohesion force and RAR, RLD and RD for the shrubs. As the growth period increases from 10 to 17 months, the incremental increase in RAR is 48.32% ~ 210.25% for Caragana korshinskii Kom and 0.56% ~ 166.85% for Zygophyllum xanthoxylon (Bunge) Maxim. This proportional increase is notably larger than that for RLD and RD. The increment in RAR is marginally greater for C. korshinskii than it is forZ. xanthoxylon.Correspondingly, the cohesion force incremental rates of remolded rooted soil for C. korshinskii and Z. xanthoxylonare 12.41% ~ 25.22% and 3.45% ~ 17.33% respectively. Meanwhile, as root content increases, the contribution by roots to cohesion force increases markedly until a threshold condition is reached.
收录类别	SCI
语种	英语
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/15122]
专题	成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2016_Vol13 No.5
推荐引用方式 GB/T 7714	FU Jiang-tao,HU Xia-song,BRIERLEY Gary,et al. The influence of plant root system architectural properties upon the stability of loess hillslopes, Northeast Qinghai, China[J]. Journal of Mountain Science,2016,13(5):785-801.
APA	FU Jiang-tao.,HU Xia-song.,BRIERLEY Gary.,QIAO Na.,YU Qin-qin.,...&ZHU Hai-li.(2016).The influence of plant root system architectural properties upon the stability of loess hillslopes, Northeast Qinghai, China.Journal of Mountain Science,13(5),785-801.
MLA	FU Jiang-tao,et al."The influence of plant root system architectural properties upon the stability of loess hillslopes, Northeast Qinghai, China".Journal of Mountain Science 13.5(2016):785-801.