水土保持通报2011，Vol.31Issue(4)：99-102,4.
祁连山东段青海云杉林土壤有效氮研究
Soil Available Nitrogen of Picea Crassifolia Forest in Eastern Qilian Mountains
摘要
Abstract
Soil available nitrogen of Picea crassifolia forest in the eastern Qilian Mountains was studied through field sampling and laboratory analysis.The results showed that：（1） soil total available nitrogen（NH^＋4—N and NO-3—N） in 0—40 cm of Picea crassifolia forest was 17.26-20.76 mg/kg,NH^＋4—N was the major existing forms of soil available nitrogen with content exceeding 66.72%;（2） Soil NH^＋4—N decreased with the increasing soil depth,and no significant change of NO-3—N occurred,but NO-3—N was more sensitive to soil microenvironment factor compared with NH^＋4—N;（3） The correlation between soil NH^＋4—N and organic matter was significant（p0.05）,while the relation between soil NO-3—N and organic matter was not significant.NH^＋4—N as the main forms of soil available nitrogen largely depended on the soil neutral pH,low temperature and high moisture content in the research area.关键词
祁连山/青海云杉林/有效氮/铵态氮/硝态氮Key words
Qilian Mountains/Picea crassifolia/available nitrogen/NH＋4—N/NO-3—N分类
农业科技引用本文复制引用
赵维俊,刘贤德,车宗玺,敬文茂,张学龙,马钰..祁连山东段青海云杉林土壤有效氮研究[J].水土保持通报,2011,31(4):99-102,4.基金项目
林业公益性行业科研专项“西北高寒山地针叶林碳氮水耦合观测、模拟与应用技术” （）
林业公益性行业科研专项 （）
