生态学杂志2011，Vol.30Issue(10)：2149-2154,6.
哀牢山中山湿性常绿阔叶林土壤氮转化的海拔效应
Altitudinal effect of soil nitrogen transformation in a montane evergreen broadleaved forest in Ailao Mountains of Southwest China.
摘要
Abstract
By using resin core method, the intact soil in a high altitude montane evergreen broad-leaved forest in Ailao Mountains was transferred to and incubated in the medium altitude secondary forest and low altitude artificial forest in the Mountains, respectively, aimed to study the altitu-dinal effect of soil nitrogen transformation. Altitude had significant effects on the net mineralization rate, net nitrification rate, and leached amount of soil nitrogen (P<0. 01), being most obvious in early rain season. At high altitude, the soil nitrogen net mineralization and net nitrification rates were -5. 81 and -4. 18 mg N·kg-1·60d-1, respectively; while at medium and low altitudes, they were 20. 92 and 44. 15 mg N·kg-1·60d-1, and 17. 07 and 20. 38 mg N·kg-1· 60d-1, and the amount of leached nitrogen was increased by 0. 37 and 2. 77 times, respectively. Due to the increase of soil denitrification in mid and late rain seasons, the soil nitrogen net mineralization and net nitrification rates decreased, with the net mineralization rate peaked in mid rain season and decreased in late rain season. It was deduced that the future climate warming could accelerate the soil nitrogen transformation rate and cause the gaseous nitrogen losses in the montane evergreen broadleaved forest of Ailao Mountains.关键词
森林土壤/海拔/土壤氮矿化/树脂芯法Key words
forest soil/altitude/soil N mineralization/resin core method分类
农业科技引用本文复制引用
高建梅,董丽媛,胡古,沙丽清..哀牢山中山湿性常绿阔叶林土壤氮转化的海拔效应[J].生态学杂志,2011,30(10):2149-2154,6.基金项目
国家重点基础研究发展计划项目(2010CB833501-01-07)资助. （2010CB833501-01-07）
