马尾松人工林土壤氮含量变化分析  

Analysis of Soil Nitrogen Content Changes of Pinusmassoniana Plantation

作　　者：程建军 曹爱珍 陶席 潘娅 李俊 胡昌平 CHENG Jianjun;CAO Aizhen;TAO Xi;PAN Ya;LI Jun;HU Changping(Guanghan Natural Resources Bureau,Sichuan Province,Guanghan 618300;Shifang Agricultural and Rural Bureau,Sichuan Province,Shifang 618400;Yilong Natural Resources Bureau,Sichuan Province,Yilong 637600;Yuexi Natural Resources Bureau,Sichuan Province,Yuexi 616650)

机构地区：[1]四川省广汉市自然资源局,四川广汉618300 [2]四川省什邡市农业农村局,四川什邡618400 [3]四川省仪陇县自然资源局,四川仪陇637600 [4]四川省越西县农业农村局,四川越西616650

出　　处：《四川林业科技》2023年第2期111-115,共5页Journal of Sichuan Forestry Science and Technology

摘　　要：以不同林龄(8、20、32和50年生)马尾松人工林为研究对象,比较不同林龄、土层及月份林地土壤全氮和有效氮含量变化。结果表明:(1)土壤全氮和有效氮含量随林龄的增加而增加;(2)土壤全氮和有效氮含量随着土层深度增加而降低;(3)在一个生长周期内,土壤全氮和有效氮含量不同月份不同龄组间各不相同,总体呈现出升-降-升的变化趋势,随着土壤温度和含水量的升高而增加。Taking Pinus massoniana plantations with different forest ages(8 a,20 a,32 a,50 a)as the research object,the soil total nitrogen and available nitrogen contents in different forest ages,soil layers and different months were compared and analyzed.The results showed that:(1)Soil total nitrogen and available nitrogen content increased with the age of Pinus massoniana plantation;(2)Soil total nitrogen and available nitrogen cotent decreased with the increase of soil depth;(3)In one growth cycle of Pinus massoniana plantation,soil total nitrogen and available nitrogen content were different among different age groups in different months,and generally showed a rising-falling-rising trend,which increased with the increase of soil temperature and water content.

关 键 词：马尾松人工林 林龄 土层 全氮 有效氮 

分 类 号：S714.2[农业科学—林学]