大兴安岭火烧迹地植被恢复过程中土壤氮素特征

被引：18

作者：

吴晞

赵雨森

辛颖

机构：

[1] 东北林业大学林学院

来源：

森林工程 | 2022年 / 38卷 / 02期

关键词：

土壤氮素; 火烧迹地; 植被恢复; 大兴安岭;

D O I：

10.16270/j.cnki.slgc.2022.02.003

中图分类号：

S714 [森林土壤学];

学科分类号：

090301 [土壤学];

摘要：

以大兴安岭重度火烧迹地不同恢复年限的林分土壤为研究对象，对各形态氮素含量进行测定。为了研究重度火烧迹地在植被恢复过程中土壤氮素特征，研究结果表明：(1)大兴安岭“5·6”大火造成的重度火烧迹地，在植被恢复过程中，恢复了29 a的人工林土壤全氮储量最高，为3.16 g/kg。分别是恢复18 a、8 a和23 a土壤全氮含量的1.79、2.82和3.43倍。(2) 0～10 cm土层，恢复29 a林分土壤铵态氮和硝态氮含量显著高于其他恢复年限。(3)土壤有机碳与全氮呈极显著正相关关系，与铵态氮和硝态氮呈显著正相关关系。C/N与pH呈负相关关系。土壤全氮与铵态氮和硝态氮呈显著正相关关系。研究结果可作为大兴安岭重度火烧迹地植被恢复的科学依据。

引用

页码：8 / 13+104 +104

页数：7

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