title: [Element concentrations in Rheum palmatum and R. likiangense plants and soil in Tibet plateau].
abstract: The characteristics of element concentrations in Rheum palmatum and R. likiangense plants and soil were studied using ICP method. The results showed that the P concentrations in soil was significantly lower than that in leaves and rhizomes; Fe concentration was 50-100 times higher in soil than in rhizomes, and leaves, and without significant difference between rhizomes and leaves; Na, Mn and Cu concentrations appeared soil > leaves > rhizomes; and Ca concentration showed soil < leaves < rhizomes for R. palmatum, and soil > leaves > rhizomes for R. likiangense. Although K, Mg, Ca, Mn and Zn concentrations were obviously different between soils of the 2 species, K and Mg concentrations were consistent in their leaves or rhizomes, and the difference of Ca, Mn and Zn concentrations between their rhizomes was insignificant.
authors.affiliation: Laboratory of Quantitative Vegetation Ecology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093. xiezongq@public2.east.net.cn
authors.forename: Z
authors.initials: Z
authors.lastname: Xie
mesh_terms: D002118:Calcium / Q000032:analysis; D003300:Copper / Q000032:analysis; D007501:Iron / Q000032:analysis*; D008274:Magnesium / Q000032:analysis; D008345:Manganese / Q000032:analysis; D010758:Phosphorus / Q000032:analysis*; D018515:Plant Leaves / Q000737:chemistry; D018517:Plant Roots / Q000737:chemistry; D011188:Potassium / Q000032:analysis; D012250:Rheum / Q000502:physiology*; D012964:Sodium / Q000032:analysis; D012987:Soil / Q000032:analysis*; D018609:Tibet; D015032:Zinc / Q000032:analysis
chemical_list: D012987:Soil; D010758:Phosphorus; D008345:Manganese; D003300:Copper; D012964:Sodium; D007501:Iron; D008274:Magnesium; D015032:Zinc; D011188:Potassium; D002118:Calcium