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当前位置: 首页 > 文章 > 秦岭山地华山松和锐齿栎典型林分化学计量特征分析 西南林业大学学报(自然科学) 2017 (3) 81-87
Position: Home > Articles > Stoichiometric Characteristics of Pinus armandii and Quercus aliena var. acuteserrata Stands in the Qinling Mountains Journal of Southwest Forestry University(Natural Sciences) 2017 (3) 81-87

秦岭山地华山松和锐齿栎典型林分化学计量特征分析

作  者：
董宁宁;李哲;侯琳;杨安定;岳亚军
单  位：
宝鸡市马头滩林业局;西北农林科技大学
关键词：
秦岭山地;华山松;锐齿栎;天然林;树种;龄组;化学计量
摘  要：
为了解树种和林龄对乔木叶片、枯落物和土壤化学计量特征的影响,以及N、P养分的限制特征,以秦岭山地典型林分华山松和锐齿栎4个龄组的天然林为研究对象,分析了各林分乔木叶片、枯落物和土壤的C、N、P化学计量特征。结果表明:C、N、P含量在2种林分各龄组中表现为叶片>枯落物>土壤,华山松针叶中C含量高于锐齿栎叶片,而N含量、P含量均低于锐齿栎叶片;树种对植物叶片生态化学计量特征、枯落物的C、N含量及C∶N和N∶P、土壤P含量和N:P有极显著影响,对枯落物和土壤的C∶P有显著影响;林龄对植物叶片和枯落物的C含量有显著影响,对土壤的P含量、C∶P和N∶P有极显著影响;该地区N∶P为7.47~12.50,N成为限制研究区林分正常生长的主要元素。
译  名：
Stoichiometric Characteristics of Pinus armandii and Quercus aliena var. acuteserrata Stands in the Qinling Mountains
作  者：
Dong Ningning;Li Zhe;Hou Lin;Yang Anding;Yue Yajun;Northwest A & F University;Matoutan Forestry Bureau of Baoji City;
关键词：
Qinling Mountains;;Pinus armandi;;Quercus aliena var.acuteserrata;;natural forests;;species;;stand age class;;stoichiometry
摘  要：
To understand how species and stand age affects stoichiometric characteristics of plant leaves,litter and soil,and the limiting status of N,P nutrients,Pinus armandi and Quercus aliena var. acuteserrata natural forests with 4 stand age groups located in the Qinling Mountains,were selected to test C,N and P stoichiometric characteristics. The results showed that the C,N and P concentrations in each age group of 2 forests were the highest in tree leaves and the lowest in soil. The C concentration in P. armandi leaves was higher than that in Q. aliena var.acuteserrata,while N and P concentrations were lower. Species have extremely significant effects on the stoichiometric characteristics of plant leaves,C content,N content,C ∶ N and C ∶ P of litters and P content and N ∶ P in the soil. Stand age significantly effected on C content of leaves and litters. Also,it has extremely significant affect on P content,C ∶ P,N ∶ P ratio in the soil. The N ∶ P ranges from 7. 47 to 12. 50,and the N played the dominant role in normal growth of plants.

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