干旱区生态环境知识资源中心(Arid): 景电灌区次生盐渍化土壤冻融特征

Arid

	景电灌区次生盐渍化土壤冻融特征
其他题名	The freezing-thawing characteristics of salinized soil in Jingtai Irrigated area of china
	张立新 1; 徐学祖 2; 韩文玉 3
来源期刊	土壤学报
ISSN	0564-3929
出版年	2002
卷号	39 期号:4 页码:512-516
中文摘要	通过对景电灌区一个冻融周期的现场观测，发现盐渍化土壤冻结期缩短，冻结深度减小，冻结起始位置不是地表，而是位于地表以下某个深度，这导致在冻结发展期间有两个冻结锋面出现，使水热盐动态更为复杂。
英文摘要	The Jingtai Irrigation Zone with an acreage of 200km~2 is located alongside the upper reaches of the Yellow River, in Gansu Province, Northwest China. Under the control of arid and semiarid climate, besides the influence of strong evaporation it is subject to strong effects of seasonally freezing and thawing processes as well. The uneven distribution of salt and water makes the freezing point of soil different from one depth layer to another. It is found based on the field investigation that the frozen period of salinized soil was shorter and the maximum frozen depth shallower. The starting position of soil freezing is from a certain depth below the soil surface other than from the soil surface. The freezing characteristic makes the salt-water-heat dynamic more complex due to two freezing fronts occurring during freezing.
中文关键词	盐渍化 ; 土壤 ; 冻融过程
英文关键词	soil salinization soil freezing-thawing action
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:1069488
来源机构	中国科学院西北生态环境资源研究院 ; 北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/203495
作者单位	1.北京师范大学遥感与GIS研究中心，资源与环境科学系, 北京 100875, 中国; 2.中科院寒区旱区环境与工程研究所, 冻土工程国家重点实验室, 兰州, 甘肃 730000, 中国; 3.甘肃省景泰县水利局, 景泰, 730400
推荐引用方式 GB/T 7714	张立新,徐学祖,韩文玉. 景电灌区次生盐渍化土壤冻融特征[J]. 中国科学院西北生态环境资源研究院, 北京师范大学,2002,39(4):512-516.
APA	张立新,徐学祖,&韩文玉.(2002).景电灌区次生盐渍化土壤冻融特征.土壤学报,39(4),512-516.
MLA	张立新,et al."景电灌区次生盐渍化土壤冻融特征".土壤学报 39.4(2002):512-516.