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西鄂尔多斯地区土壤与四合木微量元素含量特征分析
引用本文:智颖飙,杨持,姚一萍,高天云,黄洁.西鄂尔多斯地区土壤与四合木微量元素含量特征分析[J].应用生态学报,2004,15(3):396-400.
作者姓名:智颖飙  杨持  姚一萍  高天云  黄洁
作者单位:1. 内蒙古大学生命科学学院,呼和浩特,010021
2. 内蒙古农业科学院,呼和浩特,010031
基金项目:国家自然科学基金资助项目 ( 3 0 160 0 2 0 )
摘    要:从西鄂尔多斯地区生境适宜性特征的角度,研究四合木(Tetraena mongolia)的生态适应性,探讨迁地保护不易成活的原因,对不同生境条件下四合木分布区土壤和植株微量元素含量的测定结果表明,四合木分布区土壤中Cu、Fe、Mn、Zn、B、Mo、Se、Co、CI9种微量元素中,除B的含量明显高于国内土壤平均含量水平和荒漠区土壤平均含量水平;其它元素都低于国内土壤的平均含量;迁地实验区土壤中除Cu的有效量略低于荒漠区土壤和四合木分布区土壤的含量外,Fe、Mn、Zn、B、Mo的有效量均略高于荒漠区土壤和四合木分布区土壤,四合木植株中Fe、Cu、Zn、B、Se、Co的含量远高于各种类型草原植物,而Mo含量高于植物体含量均值,但低于荒漠草原植物,仅为荒漠草原植物的50%,四合木分布区土壤与四合木成株、幼苗9种微量元素相关性不显著,而且植物体中9种元素含量远远大于土壤中的有效量,从四合木植株中各元素含量与各类型草原植物(包括荒漠草原植物)和土壤中含量比较表明,四合木在生长过程中对各种元素呈富集特征,可见土壤微量元素的含量不是四合木迁地种植的制约因子。

关 键 词:西鄂尔多斯地区  土壤  四合木  微量元素含量  生态适应性  草原植物
文章编号:1001-9332(2004)03-0396-05
修稿时间:2003年5月21日

Characteristics analysis of micro-element contents in western Erdos soil and in Tetraena mongolica plant
ZHI Yingbiao ,YANG Chi ,YAO Yiping ,GAO Tianyun ,HUANG Jie.Characteristics analysis of micro-element contents in western Erdos soil and in Tetraena mongolica plant[J].Chinese Journal of Applied Ecology,2004,15(3):396-400.
Authors:ZHI Yingbiao  YANG Chi  YAO Yiping  GAO Tianyun  HUANG Jie
Institution:Department of Ecology and Environment Science, Inner Mongolica University, Huhehaote 010021, China. zyb.china@163.com
Abstract:This paper studied why the ex-situ conservation of Tetraena mongolica isn't successful.Through measuring and analyzing the micro-element contents in the soil where Tetraena mongolica is naturally distributed and where Tetraena mongolica is introduced in western Erdos.The results showed that among the areas where Tetraena mongolica is native to and the ex situ protection area,the average contents of 9 micro-elements,except B,are not only obviously higher than the average values in China's soil, but also higher than the values in desert areas.The contents of all micro-elements,except Cu,in the ex situ protection area are higher than desert and the natural distribution areas of Tetraena mongolica. Among the contents of the micro-elements in Tetraena mongolica plant,Fe,Cu,Zn,B,Se and Co are quite higher than that in other plant species on steppes,and Mo is higher than that in other plant species but is only 50% to the desert plants. The correlation coefficient for the contents of micro-elements between soil and plants (including adults and seedlings) are not significant and the contents in Tetraena mongolica plant are much higher than available contents of the counterparts in soil.By comparing the contents of micro-elements in Tetraena mongolica,grassland plants on steppe and desert and the contents in soil,it can be seen that every micro-element was enriched by Tetraena mongolica during its growth.The results do not support the suggestion that the contents of micro-elements in soil is the factor restricting the growth of Tetraena mongolica in the ex situ protection area.
Keywords:Western Erdos  Soil  Tetraena mongolica  Micro-elements contents  
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