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FOREST RESOURCES WANAGEMENT ›› 2020, Vol. 0 ›› Issue (4): 58-65.doi: 10.13466/j.cnki.lyzygl.2020.04.009

• Scientific Research • Previous Articles     Next Articles

Eco-stoichiometric Characteristics-of N and P Elemeuts of Main Herbaceous Plants in Larix Principis-rupprechtii Mayr.Plantation —A Case Study in the North of Yanshan Mountain

XIE Han(), WAN Yifeng, CUI Hongna, ZHENG Yan, JIA Yanlong   

  1. College of Forestry,Hebei Agricultural University,Baoding,Hebei 071000,China
  • Received:2020-06-29 Revised:2020-07-10 Online:2020-08-28 Published:2020-10-10

Abstract:

Nitrogen(N) and phosphorus(P) elements are basic elements needed by organisms and ecosystems.Through the determination and comparative study on the contents of N and P in various organs of 22 main herbaceous plants in Larix principis-rupprechtii Mayr.plantation,it is concluded that:1)The content of N in whole plants of this region ranged from 18.10 to 42.87 mg/g,and the content of P was in the range of 1.87 to 4.92 mg/g.The content of N in organs of Astragalus was the highest and the content of P in leaves and stems of mustards was the highest.The N:P value of a whole plant ranged from 6.26 to 18.95.Except that the N:P value of nerba violue plant was more than 16,the N:P values of other plants were less than 14;2) The contents of N and P elements in leaves of herbaceous plants are significantly higher than those in stems and roots,and the elements in aboveground part is more than those in the underground part;3) Among the five families,the leguminous family had the highest content of N,the umbrella family had the highest content of P,and the N:P values of all the five families were less than 14.

Key words: Larix principis-rupprechtii Mayr.plantation, herbaceous plants, ecological stoichiometry, element

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