NET NITROGEN MINERALIZATION AND NITRIFICATION IN ONE PURE PINE (PINUS TABULAEFORMIS) FOREST AND ONE PINE-OAK MIXED FOREST IN DONGLING MOUNTAINOUS REGION
东灵山油松（Pinus tabulaeformis）纯林和油松-辽东栎(Quercus wutaishanica)针阔混交林土壤氮素矿化/硝化作用研究

Keywords: Dongling Mountain,Pinus tabulaeformis,Coniferous/deciduous broad-leaved forest,Net N mineralization/nitrification,Seasonal variation
东灵山,油松,针阔混交林,矿化／硝化作用,季节动态,土壤,氮素

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Abstract:

利用PVC顶盖埋管原位培育法测定了北京东灵山地区一个油松纯林和一个油松-辽东栎落叶阔叶混交林生态系统土壤无机氮库、氮素净矿化/硝化速率的季节动态以及年度净矿化/硝化量。结果发现1）两个生态系统的土壤无机氮库和氮素净矿化/硝化速率都存在比较明显且比较一致的季节动态，但个别时期也存在较大差异；2）纯林与混交林土壤NH

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