青海省黄土丘陵区土壤微量元素空间变异特征及有效性  

Spatial Variability and Its Effectiveness of Trace Elements in Soil of Loess Hilly Region of Qinghai Province

作　　者：赵串串[1] 宋枘泽 孟汉龙 赵巧玉[1] 安若兰 董旭 

机构地区：[1]陕西科技大学资源环境学院,陕西西安710021 [2]青海省林业调查规划院,青海西宁810008

出　　处：《水土保持通报》2014年第6期109-112,117,共5页Bulletin of Soil and Water Conservation

基　　金：青海公益林监测横向项目

摘　　要：对青海省黄土丘陵区土壤中主要微量元素的空间变异特征及动态变化进行了研究。结果表明,研究区域中的有效态微量元素铁、铜、锌、硼均属较高变异,有效锰属于中度或高度变异。从土系来看,黑褐土、黑钙土的各有效态微量元素含量均达到丰富级(高),灌淤土的有效态微量元素均远低于临界值。从土壤分层来看,其变异系数变化不大。灌木林地土壤微量元素相对缺乏,仅有效硼达丰富级,混交林地的有效态微量元素含量均达到中高水平。The spatial distribution and dynamic change of main trace elements in soil were studied in the loess hilly region of Qinghai Province. The result showed that the effective trace elements Fe, Cu, Zn, B had higher variability, Mn had higher or moderate variability. In view of soil series, the effective state of trace el- ements in the Dark Cinnamon and the Chernozem reached the rich level（high level）, while that in the irriga- ted soil was far below the threshold. From the view of the soil stratification, the coefficient of variation changed little. In the shrubbery forest lands, soil trace elements were lacking relatively expect available B which just reached to the rich level. However all the trace elements reached the high levels in the mix forest lands.

关 键 词：黄土丘陵区 微量元素 有效性评价 

分 类 号：S718.5[农业科学—林学]