干旱区生态环境知识资源中心(Arid): 塔克拉玛干沙漠边缘柽柳对土壤水盐分布的影响

Arid

	塔克拉玛干沙漠边缘柽柳对土壤水盐分布的影响
其他题名	Influence of tamarisk shrub on the distribution of soil salinity and moisture on the edge of Taklamakan desert
	尹传华 1; 冯固 1; 田长彦 2; 白灯莎 3; 张福锁 1
ISSN	1000-6923
出版年	2007
卷号	27 期号:5 页码:670-675
中文摘要	以塔克拉玛干沙漠边缘地区生长的柽柳为研究对象,测定了柽柳灌丛下及周围土壤中Na~+和K~+含量、电导率、pH值、水分以及柽柳营养枝Na~+和K~+含量等指标.结果表明,柽柳灌丛造成土壤盐分呈现斑块状分布,形成盐岛.柽柳体内较高的盐分含量可能是造成土壤盐分分布变化的重要因素之一(盐岛效应).相关分析表明,盐岛效应强弱与背景土壤水盐条件密切相关.在背景土水盐条件适中的冲积平原中部,盐岛效应最显著;而在背景土盐分最重的冲积平原中下部和水分含量最低的沙漠边缘,盐岛效应消失.在柽柳生长的适宜地下水位,盐岛效应最明显.柽柳还使冠下土壤Na/K发生改变,碱性增加,含水量降低.
英文摘要	Soil Na~+, K~+, electrical conductivity (EC), moisture content and pH value beneath and around tamarisk shrub on the northern edge of Taklamakan desert were analyzed in this study, as well as Na~+ and K~+ contents in tamarisk shoot. Tamarisk induced patchy distribution of soil salinity beneath its canopy, i.e. islands of salinity. Higher salt content in shoot may play an important role in the formation of the islands. The accumulation of salt in soil beneath tamarisk shrub showed a significant linear relationship with soil salinity and moisture content. The accumulating effect of salt in the island was the highest in middle alluvial plain where soil salinity and moisture content were medium among five landscape locations. However, such salt accumulating effects declined or disappeared in middle-lower alluvial plain where soil salinity content was the highest and on the edge of sandy desert where soil moisture content was the lowest among five landscape locations, indicating that the intensity of island of salinity was closely related to the groundwater table that influenced the growth of tamarisk. The tamarisk shrub also changed the ratio of Na/K, increased soil alkalinity and decreased soil moisture content beneath it.
中文关键词	荒漠化 ; 柽柳 ; 盐岛 ; 塔克拉玛干沙漠
英文关键词	desertification tamarisk island of salinity Taklamakan desert
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:2946468
来源机构	中国科学院新疆生态与地理研究所 ; 中国农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/221760
作者单位	1.中国农业大学资源与环境学院, 北京 100094, 中国; 2.中国科学院新疆生态与地理研究所, 乌鲁木齐, 新疆 830011, 中国; 3.新疆农业科学研究院核技术生物技术研究所, 乌鲁木齐, 新疆 830000, 中国
推荐引用方式 GB/T 7714	尹传华,冯固,田长彦,等. 塔克拉玛干沙漠边缘柽柳对土壤水盐分布的影响[J]. 中国科学院新疆生态与地理研究所, 中国农业大学,2007,27(5):670-675.
APA	尹传华,冯固,田长彦,白灯莎,&张福锁.(2007).塔克拉玛干沙漠边缘柽柳对土壤水盐分布的影响.,27(5),670-675.
MLA	尹传华,et al."塔克拉玛干沙漠边缘柽柳对土壤水盐分布的影响".27.5(2007):670-675.