摘要
对喀喇昆仑、昆仑山地区８７种植物２１个元素含量及区域分异的研究表明，Ｃａ、Ｃｒ、Ｃｄ、Ｆｅ、Ｖ含量比高等植物含量偏高，Ｐｈ、Ｐ的含量偏低．同种植物在不同地点元素含量有差异．盐柴荒漠植物中Ｎａ、Ｋ、Ｍｇ、Ｐ含量较高；高山草甸、冰缘植被植物Ｂａ、Ｃａ、Ｆｅ、Ｖ、Ｔｉ含量较高．各植被类型植物元素含量Ｎａ／Ｋ差异最大，Ｃａ／Ｍｇ较小，Ｆｅ／Ａｌ差异最小．其变异系数分别为１５３．５、２０．５和１５．９．％
Studies on 21 elements contents of 87 plant species and their regional differentiation inKarakorum and Kunlun mountainous regions show that the Ca, Cr, Cd, Fe and V contents of them are higher than those of higher plants, while Pb and P contents are lower.The element contents of same plant species on various sites are different. Halophytic vegetations on desert have a higher content of Na, K, Mg and P, and the plants on alpinemeadow and glacial fringe have a higher content of Ba, Ca, Fe, V and Ti. For variousvegetation types, The variation of Na/K is maximum, that of Ca/Mg is less, and that ofFe/Al is minimum. Their variation coefficients are respectively 153. 5, 20. 5 and 15. 9%.
出处
《应用生态学报》
CAS
CSCD
1995年第2期143-148,共6页
Chinese Journal of Applied Ecology
基金
国家自然科学基金
关键词
喀喇昆仑和昆仑山
植物元素含量
区域分异
Karakorum and Kunlun Mountains, Element content in plant, Regional differentiation.
