The influence of biological soil crusts on dew deposition in Gurbantunggut Desert, Northwestern 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)

	The influence of biological soil crusts on dew deposition in Gurbantunggut Desert, Northwestern China
	Zhang Jing ; Zhang Yuan-ming ; Downing ; Alison ; Cheng Jun-hui ; Zhou Xiao-bing ; Zhang Bing-chang
刊名	JOURNAL OF HYDROLOGY
	2009
卷号	379 期号:40606 页码:220-228
关键词	NEGEV DESERT MICROBIOTIC CRUSTS TORTULA-RURALIS DEPENDENT DEW WATER ISRAEL HIGHLANDS MOISTURE FOG PHOTOSYNTHESIS
ISSN号	0022-1694
通讯作者	Zhang, YM, Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Key Lab Biogeog & Bioresource Arid Land, Urumqi 830011, Peoples R China
中文摘要	Dew is an important source of moisture for plants, biological soil crusts, invertebrates and small vertebrates in desert environments. In this paper, measurements were taken to investigate the effects of three different types of biological soil crusts (cyanobacteria, lichen and moss) and bare sand on dew deposition in the Gurbantunggut Desert. Dew quantities were measured using micro-lysimeters with a diameter of 6 cm and a height of 3.5 cm. The results showed that the total amount of dew deposited increased with the development of soil crusts, from bare sand to cyanobacterial crust to lichen crust to moss crust. The average amount of dew deposited daily on the moss crust was the highest of all and it was significant higher than the other three soil surfaces (lichen crust, cyanobacterial crust and bare sand) (p < 0.05). During the period of the study, for each type of crust studied, the maximum amount of dew recorded was several times greater than the minimum. Moss crust was characterized by having the greatest amount of dew at dawn and also the maximum amount of dew deposited, whereas bare sand yielded the lowest amount of dew, with lichen crust and cyanobacterial crust exhibiting intermediate values. However, this was not the case for dew duration, as bare sand retained moisture for the longest period of time, followed by cyanobacterial crust, moss crust and finally lichen crust. Dew continued to condense even after sunrise. Furthermore, the differences in dew deposition may be partially attributed to an effect of the biological soil crusts on surface area. This study demonstrates the important effect of biological soil crusts upon dew deposition and may assist in evaluating the role of dew in and and semi-arid environments. (C) 2009 Elsevier B.V. All rights reserved.
学科主题	自然地理学
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/365004/10048]
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	Zhang Jing,Zhang Yuan-ming,Downing,et al. The influence of biological soil crusts on dew deposition in Gurbantunggut Desert, Northwestern China[J]. JOURNAL OF HYDROLOGY,2009,379(40606):220-228.
APA	Zhang Jing.,Zhang Yuan-ming.,Downing.,Alison.,Cheng Jun-hui.,...&Zhang Bing-chang.(2009).The influence of biological soil crusts on dew deposition in Gurbantunggut Desert, Northwestern China.JOURNAL OF HYDROLOGY,379(40606),220-228.
MLA	Zhang Jing,et al."The influence of biological soil crusts on dew deposition in Gurbantunggut Desert, Northwestern China".JOURNAL OF HYDROLOGY 379.40606(2009):220-228.