期刊论文

Characteristics of soluble organic nitrogen and soil enzyme activities in subtropical forest along a restoration gradient

中文

农业现代化研究

1000-0275

2021

42

3

570-578

10.13872/j.1000-0275.2021.0030

国家自然科学基金项目（31470629）； 中南林业科技大学研究生创新基金项目（CX20192079）~~；

本校为第一机构

森林演替中的土壤氮素转化是生态系统的关键过程,其相互关系的研究正受到愈来愈多的重视,探讨土壤可溶性有机氮(SON)和酶活性对维持森林生态系统氮循环及植被恢复、森林生态系统管理有重要的意义。在湖南省长沙县大山冲森林公园不同演替阶段三种林地(针叶林、落叶阔叶林和常绿阔叶林)的1 hm~2长期观测样地,采集表层土壤样品,测定SON和葡糖胺糖苷酶、葡萄糖苷酶和木糖苷酶酶活性,分析亚热带常绿阔叶林演替序列森林土壤SON和酶活性特征,探讨其特征及其与土壤理化性质的关系。结果表明:森林土壤SON表现为常绿阔叶林 >落叶阔叶林 >针叶林,且针叶林的铵态氮(NH_4~+ -N)、硝态氮(NO_3~- -N)、微生物生...

The transformation of soil nitrogen (N) along a forest succession is a key process of the ecosystem,and the study of its relationship is receiving more and more attention.Exploring the characteristics of the SON and enzyme activity is of great significance for maintaining the N cycling in forest ecosystem,vegetation restoration,and forest management.In order to study the characteristics of soil SON and enzyme activity at different succession stages of subtropical forests and their relationship with soil physical and chemical properties,one hectare long-term observation plot of three forests at...