干旱区生态环境知识资源中心(Arid): 咸水滴灌下林带的盐结皮时空分布规律

Arid

	咸水滴灌下林带的盐结皮时空分布规律
其他题名	Spatiotemporal Distribution of Salt Crust in a Shelter-forest Belt under Drip-irrigation with Salt Water
	王晓静 1; 成和平 2; 相建民 2; 李生宇1 ; 雷加强1 ; 徐新文1
ISSN	1001-4675
出版年	2006
卷号	23 期号:3 页码:399-404
中文摘要	通过对塔里木沙漠公路防护林带地表土壤的采样分析,研究了咸水滴灌条件下,土壤盐结皮的时空分布特征.厚度、电导率是盐结皮的主要特征参数,它们的时空变化可以表征盐结皮的分布.盐结皮的主要时空分布特征:①在水平方向上,电导率呈先增加后降低的变化趋势,厚度在距滴头40 cm处达最大,而在40 cm以外变化不明显;②在坡地上,滴头的上坡向盐结皮的厚度和电导率大于下坡向;③随着防护林种植年限的增长,盐结皮厚度逐渐增加,并最终保持在某一稳定厚度,而电导率则呈先增加后逐渐降低的趋势.
英文摘要	The Takilimakan Desert is the largest desert in China, and its area is 3.37 X 105 km2. In the desert it belongs to the extremely arid temperate continental climate, the annual temperature and precipitation are 12.4 *C and 11.1 mm respectively, but the annual evaporation is as high as 3 638.6 mm. The shelter-forests, 436 km in length and 72~78 m in width, are planted along the Takilimakan Desert Highway. By collecting and analyzing the soil samples, in this paper the spatiotemporal distribution of surface salt crust in the shelter forest belts under drip-irrigated with salt water in the hinterland of the Takilimakan Desert is lucubrated. Thickness and electric conductivity (EC) are the main characteristic parameters of salt crust, and their spatiotemporal change can be used to characterize the distribution of salt crust. The spatiotemporal distribution features of salt crust are as follows: (1) Horizontally, the EC of salt crust increases at first, and then decreases with the increase of distance away from drippers; the thickness of salt crust changes significantly within a range of 40 cm from drippers, but changes slightly further away from this range, and the maximum thickness of salt crust occurs at the place 40 cm away from drippers; (2) The micro-relief has a great effect on the spatial distribution of salt crust; on a slope, the thickness and EC of salt crust on upgrade of drippers are higher than that on downgrade; (3) The thickness of salt crust increases with the increase of age of shelter-forests at early stage, and then it tends gradually to a steady value; the EC of salt crust increases at the early stage of shelter-forests, and then it decreases gradually.
中文关键词	盐结皮 ; 时空分布 ; 咸水滴灌 ; 塔克拉玛干沙漠
英文关键词	salt crust spatiotemporal distribution drip-irrigation with salt water the Takilimakan Desert
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:2411620
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/219745
作者单位	1.国科学院,新疆生态与地理研究所, 乌鲁木齐, 新疆 830011, 中国; 2.中国石油天然气股份公司,塔里木石油分公司, 库尔勒, 新疆 841000, 中国
推荐引用方式 GB/T 7714	王晓静,成和平,相建民,等. 咸水滴灌下林带的盐结皮时空分布规律[J]. 中国科学院新疆生态与地理研究所,2006,23(3):399-404.
APA	王晓静,成和平,相建民,李生宇,雷加强,&徐新文.(2006).咸水滴灌下林带的盐结皮时空分布规律.,23(3),399-404.
MLA	王晓静,et al."咸水滴灌下林带的盐结皮时空分布规律".23.3(2006):399-404.