Effects of natural covers on soil evaporation of the shelterbelt along the Tarim Desert Highway

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)

	Effects of natural covers on soil evaporation of the shelterbelt along the Tarim Desert Highway
	Zhou HongWei ; Li ShengYu ; Sun ShuGuo ; Xu XinWen ; Lei JiaQiang ; Liu Shang ; Du WenYi ; Yan Zeng ; Wang YongChang
刊名	CHINESE SCIENCE BULLETIN
	2008
卷号	53 期号:s2 页码:137-145
关键词	IRRIGATION
ISSN号	1001-6538
通讯作者	Li, SY, Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Urumqi 830011, Peoples R China
中文摘要	The control of soil evaporation is one of important approaches to save water. The artificially simulated evaporation experiments have been conducted in the hinterland of the Taklimakan Desert to reveal the effects of the natural covers on the soil evaporation of the Tarim Desert Highway shelterbelt as well as provide some insights in the efficient utilization of water resources and optimization of irrigation systems. The results showed that (1) All the covers, including the sand deposit, the salt crust, the litter, the sand-litter mixed layer and so on, can significantly inhibit the soil water evaporation. Specifically, the daily evaporation, the total evaporation, and the evaporation rate in covered sands were much smaller than that of sands without cover. The cover inhibition effects increased with the cover thickness. Particularly, the soil evaporation of the covered sands was less affected by external and internal factors than that of the bare sands. Moreover, the variation of daily evaporation of covered sands was smaller than that of bare sands. The cumulative evaporation varied linearly with time in the covered sands whereas it varied logarithmically in the bare sands. In addition, the soil evaporation in the bare sands showed significantly different characteristics in the early and late stages of the evaporation. (2) All the covers exhibited the significant inhibiting effect on the soil evaporation, and the inhibition efficiency increased logarithmically with the cover thickness. However, as the cover thickness was above a certain value, the increase in the inhibition efficiency was slow. Particularly, at a cover thickness of 2 cm, there was no obvious difference in the inhibition efficiency among all kinds of covers. The maximum inhibition efficiency as calculated from the daily evaporation on the first day of irrigation was: sand-litter mixed layer (79.92%) > litter layer (78.96%) > salt crust (75.58%) > sand bed (74.11%), whereas the average inhibiting efficiency as calculated from the cumulative soil evaporation at the end of an irrigation cycle (the fourth day) was: salt crust (67.78%) > sand-litter mixed layer (66.72%) > sand deposit (63.28%) > litter layer (61.74%).
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/365004/10138]
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	Zhou HongWei,Li ShengYu,Sun ShuGuo,et al. Effects of natural covers on soil evaporation of the shelterbelt along the Tarim Desert Highway[J]. CHINESE SCIENCE BULLETIN,2008,53(s2):137-145.
APA	Zhou HongWei.,Li ShengYu.,Sun ShuGuo.,Xu XinWen.,Lei JiaQiang.,...&Wang YongChang.(2008).Effects of natural covers on soil evaporation of the shelterbelt along the Tarim Desert Highway.CHINESE SCIENCE BULLETIN,53(s2),137-145.
MLA	Zhou HongWei,et al."Effects of natural covers on soil evaporation of the shelterbelt along the Tarim Desert Highway".CHINESE SCIENCE BULLETIN 53.s2(2008):137-145.