森林与环境学报2018，Vol.38Issue(2)：149-155,7.DOI:10.13324/j.cnki.jfcf.2018.02.004
闽楠人工林生态系统微量元素积累与分布特征
Microelement storage and distribution in Phoebe bournei plantation ecosystem
摘要
Abstract
To provide scientific basis for the future application of Phoebe bournei for large-scale afforestation or adjustment of pure Chinese fir plantation,the content,storage and distribution of 7 microelements(Cu, Fe, Zn, Mn, Ni, Cd, Pb) in the 10-year-old P. bournei plantation ecosystem were examined in Jindong Forest Farm, Yongzhou, Hunan Provence. The results showed that the microelement content (mg?kg-1) of plantation was varied in different organs,Mn was the highest,and Ni and Pb was the lowest at arbor layer,in a order of following:Mn(291.35)>Fe(92.64)>Zn(13.94)>Cu(7.15)>Cd(2.00)>Pb(1.07)>Ni(0.77). Eexcluding Mn and Cd,the content of microelement in undergrowth vegetation was significantly higher than that at tree layer. The content of 7 microelements in the humus layer were the highest among the components in the vegetation layer.The microelement content(mg?kg-1) was in the following order:Fe(2 565.34)>Mn(109.84)>Ni(72.65)>Zn(30.79)>Pb(11.88)>Cu(8.23)>Cd(0.78)at 0-60 cm soil layer. The content of Cu, Fe, Zn, Ni increased, while Mn, Cd and Pb didn′t obviously change, with the soil depth. The accumulation of 7 microelement at vegetation layer suggested tree layer>humus layer>understory vegetation layer. The total microele-ment storage (kg?hm-2) of P. bournei plantation ecosystem was 20 811.09 and the order was Fe(19 053.91)>Mn(832.31)>Ni(539.495)>Zn(229.45)>Pb(88.372)>Cu(61.63)>Cd(5.923), soil microelement storage account for more than 99.88% of total forest ecosystem.关键词
森林生态系统/微量元素/含量/储量/分布特征Key words
forest ecosystem/microelement/content/storage/distribution characteristic分类
农业科技引用本文复制引用
杨丽丽,邢元军,文仕知,黄杨..闽楠人工林生态系统微量元素积累与分布特征[J].森林与环境学报,2018,38(2):149-155,7.基金项目
国家公益性行业专项重点项目"闽楠、青冈栎次生林提质增效关键技术研究与示范"(201504301) （201504301）
湖南省教育厅科学研究项目"闽楠幼林生态系统结构动态及其养分循环调节影响". （）
