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哀牢山木果柯林及其退化植被下土壤无机氮库的干季动态特征
引用本文:李贵才,韩兴国,黄建辉.哀牢山木果柯林及其退化植被下土壤无机氮库的干季动态特征[J].植物生态学报,2001,25(2):210-217.
作者姓名:李贵才  韩兴国  黄建辉
作者单位:中国科学院植物研究所植物数量生态学开放研究实验室, 北京 100093
摘    要:The dry-season dynamics of soil inorganic nitrogen pools were investigated under three types of vegetation (Primary Lithocarpus xylocarpus forest, secondary oak forest and tea plantation), which represent three different intensities of disturbance. Pools of inorganic nitrogen in soils (0-15 cm) showed strong differences between the three types of vegetation. Organic material, total nitrogen reduced and C/N ratio fell with increasing intensity of disturbance, while nitrate loss potential rose. These results suggest that disturbance does not favor the retention of soil nutrient elements. The dry-season dynamics of the inorganic nitrogen pools were similar under the three vegetation types while the dynamics of NH+-N differed from that of NO3--N’s. NH4+-N was the major form of inorganic nitrogen, and NO3-N content only was 1.16%-3.44%, 0.58%-2.09% and 2.02%- 7.37% of NH4+-N content in the primary Lithocatpus xylocarpus forests, secondary oak forests and tea plantations.

关 键 词:哀牢山  木果柯林  无机氮库  干季动态
修稿时间:2000年6月9日

DRY-SEASON DYNAMICS OF SOIL INORGANIC NITROGEN POOLS IN PRIMARY LITHOCARPUS XYLOCARPUS FOREST AND DEGRADED VEGETATIONS IN AILAO MOUNTAIN, YUNNAN PROVINCE
LI Gui-Cai ,HAN Xing-Guo and HUANG Jian-Hui.DRY-SEASON DYNAMICS OF SOIL INORGANIC NITROGEN POOLS IN PRIMARY LITHOCARPUS XYLOCARPUS FOREST AND DEGRADED VEGETATIONS IN AILAO MOUNTAIN, YUNNAN PROVINCE[J].Acta Phytoecologica Sinica,2001,25(2):210-217.
Authors:LI Gui-Cai  HAN Xing-Guo and HUANG Jian-Hui
Affiliation:LI Gui-Cai *,HAN Xing-Guo ** and HUANG Jian-Hui
Abstract:The dry-season dynamics of soil inorganic nitrogen pools were investigated under three types of vegetation (Primary Lithocarpus xylocarpus forest, secondary oak forest and tea plantation), which represent three different intensities of disturbance. Pools of inorganic nitrogen in soils (0-15 cm) showed strong differences between the three types of vegetation. Organic material, total nitrogen reduced and C/N ratio fell with increasing intensity of disturbance, while nitrate loss potential rose. These results suggest that disturbance does not favor the retention of soil nutrient elements. The dry-season dynamics of the inorganic nitrogen pools were similar under the three vegetation types while the dynamics of NH 4-N differed from that of NO - 3-N's. NH 4-N was the major form of inorganic nitrogen, and NO - 3-N content only was 1.16%-3.44%, 0.58%-2.09% and 2.02%-7 37% of NH 4-N content in the primary Lithocatpus xylocarpus forests, secondary oak forests and tea plantations.
Keywords:Ailao Mountain  Primary  Lithocarpus xylocarpus  Forest  Inorganic nitrogen pools  Dry-season dynamics  
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