生态学报2001，Vol.21Issue(3)：492-497,6.
鼎湖山马尾松针阔叶混交林土壤有效氮动态的初步研究
A preliminary study on the dynamics of bio-available nitrogen in soils of pine-broadleaf mixed forest in Dinghuashan Biosphere Reserve
莫江明 1彭少麟 1方运霆 1郁梦德 1孔国辉 1张佑昌1
作者信息
- 1. 中国科学院鼎湖山森林生态系统定位研究站,
- 折叠
摘要
Abstract
The dynamics of bio-available nitrogen in soils of pine-broadleaf mixed forest in Dinghushan Biosphere Reserve were studied using the ion exchange resin bag method.The total available nitrogen (NO3--N+NH4--N) in different seasons ranged from 18.87 to 93.20μg/d*g dry resin and showed significantly seasonal variation depending on different components of available nitrogen and at different depth of soil.It was the highest in the spring season.The available nitrogen in soil was mostly composed of ammonium nitrogen (>90%).No significant differences in soil ammonium N concentrations between the two studied soil layers (0～10cm,10～20cm).However,there were significant differences in nitrate N concentrations in summer between the two layers.The positive correlation between ammonium N and nitrate N in this forest was significant only in one season.关键词
有效氮/离子交换树脂法/马尾松针阔叶混交林/鼎湖山分类
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莫江明,彭少麟,方运霆,郁梦德,孔国辉,张佑昌..鼎湖山马尾松针阔叶混交林土壤有效氮动态的初步研究[J].生态学报,2001,21(3):492-497,6.
