Effect of plant species on shrub fertile island at an oasis-desert ecotone in the South Junggar Basin, China

CORC > 新疆生态与地理研究所 > 中国科学院新疆生态与地理研究所 > 中国科学院新疆生态与地理研究所(2010年以前数据)

	Effect of plant species on shrub fertile island at an oasis-desert ecotone in the South Junggar Basin, China
	Li ; J. ; Zhao ; C. ; Zhu ; H. ; Y. ; Wang ; F.
刊名	JOURNAL OF ARID ENVIRONMENTS
	2007
卷号	71 期号:4 页码:350-361
关键词	SEMI-ARID SAVANNA SOIL PROPERTIES CHIHUAHUAN DESERT LARREA-TRIDENTATA SHORTGRASS STEPPE SPATIAL-PATTERNS NEGEV-DESERT ECOSYSTEM HETEROGENEITY NITROGEN
ISSN号	0140-1963
通讯作者	Li, J, Chinese Acad Sci, Xinjiang Inst Ecol & Geog, 40-3 S Beijng Rd, Urumqi 830011, Peoples R China
中文摘要	Shrub fertile islands are a common feature in arid ecosystems. To examine the effect of plant species on the spatial patterns of soil chemical and physical properties surrounding individual shrubs, two deciduous shrub species with different morphologies (Tamarix spp. and Haloxylon ammodendron Bge.) were studied at an oasis-desert ecotone in South Junggar Basin. Soil samples were collected under the shrub crown (canopy), at the vertically projected limit of shrub crown margin (periphery), and in the space between shrub crowns (interspace) at two depths, 0-10 and 10-20 cm, to analyze their physical and chemical properties. The results show that the fertile islands of ;Tamarix spp. are enriched with more soil nutrients (significantly higher, P<0.05; soil organic matter (SOM); total nitrogen (TN) and available nitrogen (AN); to a deeper depth (> 20 cm) and in a larger area (beyond the canopied area) compared to that of H. ammodendron (significantly higher, P < 0.05, soil nutrients detected only for AN; < 20 cm in depth; smaller than the canopied area). Soil texture patterns surrounding the shrubs of the two species are even more different, with more coarse particles under the Tamarix spp. canopies compared to the interspace between shrubs but fewer under the H. ammodendron canopies compared to the interspaces. These variations are attributed to the difference in morphology of the two studied species: the Y-shaped crowns of H. ammodendron are less capable of capturing and maintaining litter under them than the hemispheroidal crowns of Tamarix spp., which leads to the less well developed fertile islands surrounding H. ammodendron shrubs. (C) 2007 Elsevier Ltd. All rights reserved.
学科主题	植物生态学
收录类别	SCI
公开日期	2011-08-19
内容类型	期刊论文
源URL	[http://ir.xjlas.org/handle/365004/10308]
专题	新疆生态与地理研究所_中国科学院新疆生态与地理研究所(2010年以前数据)
推荐引用方式 GB/T 7714	Li,J.,Zhao,et al. Effect of plant species on shrub fertile island at an oasis-desert ecotone in the South Junggar Basin, China[J]. JOURNAL OF ARID ENVIRONMENTS,2007,71(4):350-361.
APA	Li.,J..,Zhao.,C..,Zhu.,...&F..(2007).Effect of plant species on shrub fertile island at an oasis-desert ecotone in the South Junggar Basin, China.JOURNAL OF ARID ENVIRONMENTS,71(4),350-361.
MLA	Li,et al."Effect of plant species on shrub fertile island at an oasis-desert ecotone in the South Junggar Basin, China".JOURNAL OF ARID ENVIRONMENTS 71.4(2007):350-361.