三江平原泥炭中营养元素垂直分布特征应用生态学报.PDF

应 用 生 态 学 报 　2004 年 2 月 　第 15 卷 　第 2 期 　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 CHIN ESE J OU RNAL OF A PPL IED ECOL O GY ,Feb . 2004 ,15 (2) ∶265～268 三江平原泥炭中营养元素垂直分布特征 于君宝 　王金达 　刘景双 ( 中国科学院东北地理与农业生态研究所 ,长春 1300 12) 【摘要】　采用冬季采样 、现场分层的方法 ,系统地研究了三江平原河床河漫滩型泥炭地和谷底洼地型泥 炭地中常量营养元素 N 、P 、Mg 、Ca 、Fe 和微量营养元素 Cu 、Zn 、Mn 、B 的垂直分布特征. 结果表明 ,总 N 在 泥炭表层富集 ,总 P 在草根层富集 ,其含量随剖面深度的增加而降低 ,Zn 、Mn 、B 、Mg 、Fe 表现出草根层富 集和淤泥质亚粘土潜育层急剧积累 ,Ca 元素含量在剖面各层次中分布较均匀. 某些营养元素间具有显著 的相关性. 关键词 　三江平原 　泥炭 　营养元素 　分布特征 文章编号 　100 1 - 9332 (2004) 02 - 0265 - 04 　中图分类号 　X144 , S153 　文献标识码 　A Vertical distribution character of nutrient elements in peat of Sanj iang Plain. YU J unbao , WAN G J inda , L IU J ingshuang ( N ort heas t I ns tit ute of Geog rap hy an d A g ricult u ral Ecology , Chinese A cademy of S ciences , Changchun 1300 12 , China) . Chin . J . A pp l . Ecol . ,2004 ,15 (2) :265～268. Based on t he met hods of sampling in winter and dividing soil layer on t he site , t he vertical distribution character of normal amount nutrient element s N , P , Mg , Ca , Fe and nutrient trace element s Cu , Zn , Mn , B in p eat of river bedflood land and valley depression land in t he Sanjiang Plain was studied systematically . The result s showed t hat TN was accumulated in surface layer of p eat , and TP was accumulated in root layer . The content s of TN and TP were decreased wit h t he section dept h increasing. Zn , Mn , B , Mg and Fe were gat hered in root layer and accumulated sharply in gley horizon of silt subclay , and t he content of Ca was regular relatively in each layer of section . There were close correlations among some nutrient element s in p eat section . Key words 　San