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清远市针叶林土壤氮含量研究
张亚男1, 李莹莹1, 康剑1, 张志辉2, 程长福2, 丁晓纲1, 魏　丹1
1.广东省林业科学研究院/广东省森林培育与保护利用重点实验室;2.清远市龙坪林场
摘要:
研究以清远市针叶林为研究对象，测定其土壤全氮含量，并用空间插值法分析其含量分布状 况。结果显示：清远市针叶林土壤同一土层不同区域为中部土壤全氮含量最高，西北部和东南部针叶 林土壤全氮含量较低；不同土层全氮含量不同，随着土层厚度的增加，全氮含量不断减小；0~20 cm、 20~40 cm、40~60 cm 土层土壤全氮处于Ⅲ级水平，60~80 cm 土层土壤全氮处于Ⅴ级水平。
关键词:  清远市  针叶林  土壤  全氮
DOI：
分类号:
基金项目:广东省林业科技计划项目（2021-KYXM-13），广东省省级财政专项资金“林地土壤调查”
Study on Soil Nitrogen Content of Coniferous Forest in Qingyuan City
zhangyanan1, Li Yingying1, Kang Jian1, Zhang Zhihui2, Cheng Changfu2, Ding Xiaogang1, Wei dan1
1.Guangdong Provincial Key Laboratory of Silviculture;2.1
Abstract:
This study took coniferous forest in Qingyuan city as the research object, the content of soil total nitrogen was measured and its distribution was analyzed by spatial interpolation method. The results showed that the soil total nitrogen content in different regions of the same soil layer of coniferous forest in Qingyuan city was the highest in the central coniferous forest, while the soil total nitrogen content in the northwest and southeast coniferous forest was relatively low. The total nitrogen content in different soil layers was different, and the total nitrogen content decreased with the increase of soil thickness. The soil total nitrogen in the 0-20 cm, 20-40 cm and 40-60 cm soil layers was at the high level of Ⅲ , and the soil total nitrogen in the 60-80 cm soil layer was at the low level of Ⅴ .
Key words:  Qingyuan city  coniferous forest  soil  total nitrogen