title: [Characteristics of element contents and their influence factors in Codonopsis tangshen].
abstract: OBJECTIVE
  To study the characteristics of element contents and the influencing factors in Codonopsis tangshen.
  
  
  METHODS
  The contents of elements were determined and the data was statistically analyzed.
  
  
  RESULTS
  The variation coefficients of elements in C. tangshen were lower than those in soil, and variation coefficients of C. tangshen from different habitats were lower than 50%.
  
  
  CONCLUSIONS
  The absorption of nutritional elements in C. tangshen was related to content and condition of soil nutrients, and climate etc.
authors.affiliation: Chongqing Academy of Chinese Materia Medica, Chongqing 400065, China. rpeng5572@yahoo.com.cn
authors.forename: Rui
authors.initials: R
authors.lastname: Peng
authors.forename: Yingfang
authors.initials: Y
authors.lastname: Wei
authors.forename: Aiping
authors.initials: A
authors.lastname: Wang
authors.forename: Xiaoli
authors.initials: X
authors.lastname: Wu
authors.forename: Longyun
authors.initials: L
authors.lastname: Li
mesh_terms: D002681:China; D002980:Climate; D029745:Codonopsis / Q000737:chemistry* / Q000378:metabolism; D017753:Ecosystem; D004602:Elements; D010946:Plants, Medicinal / Q000737:chemistry* / Q000378:metabolism; D012987:Soil / Q000032:analysis
chemical_list: D004602:Elements; D012987:Soil