期刊论文

中文

环境科学

0250-3301

2015

36

10

3809-3815

10.13227/j.hjkx.2015.10.033

31470629:国家自然科学基金 :湖南省环境科学重点学科建设项目 CX2014B22:中南林业科技大学研究生创新项目

本校为第一机构

为了解亚热带典型森林土壤氮素和有机氮素特征,采集大围山森林公园典型森林土壤剖面(0~100 cm),按每10 cm一层采集土壤样品,研究土壤氮素和有机氮变化规律及其与土壤理化性质的关系. 结果表明: ① 土壤全氮、 酸解性有机氮、 可溶性有机氮含量均随剖面深度增加而呈下降趋势,受海拔高度影响,高海拔山地花岗岩黄棕壤土壤全氮和有机氮组分含量较高; ② 土壤有机氮占全氮比平均97.39%±1.17%,酸解性有机氮占全氮比平均64.38%±10.68%,酸解性有机氮各组分均随剖面深度增加而降低; ③ 土壤可溶性有机氮含量范围为9.92~23.45 mg·kg~(-1),游离氨基酸氮(1.62~12.02 mg·kg~(-1))占可溶性有机氮比为27.36...

To clarify altitudinal gradient of subtropical forest soil total nitrogen and organic nitrogen, soil samples were collected per 10 cm on soil profile (0-100 cm) in Dawei Mountain, researched the variation of soil organic nitrogen and correlation with soil physical and chemical properties. The results showed that: (1) Total nitrogen, acid hydrolysable organic nitrogen and soluble organic nitrogen decreased with the increase of depth, content of each component in mountain granite yellow-brown soils was much higher affected by altitude; (2) The av...