五台山山地草甸自然保护区11种化学元素生物积累的研究

五台山山地草甸自然保护区可划分为亚高山草甸带、山地五花草甸带、常绿针叶林草甸带。本文研究了各生态带土壤和植被中１１种化学元素的含量、分布及生物积累特征。研究表明：（１）各带土壤中化学元素含量均在全国同类型土壤含量范围之内，就平均含量而言，Ｃｏ＇Ｎｉ含量较高，其它元素含量较低，整体属清洁理想水平，合乎自然保护区土壤环境标准。（２）各带植被中营养元素含量较高，营养丰富。尤其是亚高山草甸带是饲用价值很高

STUDY ON THE BIOLOGICAL ACCUMULATIONS OF ELEVEN CHEMICAL ELEMENTS IN THE MOUNTAIN MEADOW NATURAL RESERVE IN MT .WUTAL

study on the features of the contents,distributions and accumulations of 11 chemical elements in soils and vegetations was carried out in each of the subalpine meadow zone ,the mountain five-flowered herbosa meadow zone and the evergreen coniferous forest meadow of the Mountain Meadow Natural Reserve in Mt . Wutai. It was found that the contents of chemical elements in the soils in each of these zones are within the ranges of their own na-tional averages in the same kind of soils, with both Co and Ni at a higher level, other ele-ments at a lower level, and the overall at a clean and desirable level in compliance with theenvironmental standards for soil;in a natural reserve . The vegetations in each of these zones had higher contents of nutrient element such as Mn ,Co , Ni, K and Ca. Particularly, thevegetations in the subalpine meadow zone are the herbages of high quality which are highly valuable to feed animal . In the vegetations in each of these zones,both K and Ca had thehighest bioavailability and Co had the lowest bioavailability .