| 原始红松林及其次生林土壤游离氨基酸季节动态变化 |
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| 引用本文： | 鞠敏睿,郝敬梅,崔晓阳.原始红松林及其次生林土壤游离氨基酸季节动态变化[J].东北林业大学学报,2010,38(9). |
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| 作者姓名： | 鞠敏睿 郝敬梅 崔晓阳 |
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| 作者单位： | 东北林业大学,哈尔滨,150040;东北林业大学,哈尔滨,150040;东北林业大学,哈尔滨,150040 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 以凉水国家自然保护区内原始红松林及其次生林土壤为研究对象,测定了土壤游离氨基酸(TFAA)的质量分数,并分析了其与土壤铵态氮NH4+—N、硝态氮NO3-—N、有机质、全氮、水解氮的质量分数及含水率的关系。结果表明:原始红松林及其次生林的游离氨基酸质量分数都在7、8、9月呈现"V"型变化趋势;在同一月份中,TFAA、NH4+—N、NO3-—N之间具有相同的差异性关系,不同月份差异性不同。对土壤A层各形态氮素的质量分数及土壤基本性质指标进行相关分析可知:土壤游离氨基酸的质量分数与铵态氮、硝态氮、有机质、全氮、水解氮质量分数及含水率之间均不相关。对土壤A0及A层各指标进行相关分析可知:土壤游离氨基酸质量分数与铵态氮、硝态氮、全氮、水解氮质量分数以及含水率均相关性极显著(p0.01),与有机质质量分数不相关。
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| 关 键 词： | 原始红松林 次生林 游离氨基酸 季节动态 |
Seasonal Dynamics of Soil Free Amino Acids in Virgin Forest and Secondary Forest of Korean Pine in Xiaoxing'an Mountains |
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| Ju Minrui,Hao Jingmei,Cui Xiaoyang.Seasonal Dynamics of Soil Free Amino Acids in Virgin Forest and Secondary Forest of Korean Pine in Xiaoxing'an Mountains[J].Journal of Northeast Forestry University,2010,38(9). |
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| Authors: | Ju Minrui Hao Jingmei Cui Xiaoyang |
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| Institution: | Ju Minrui,Hao Jingmei,Cui Xiaoyang(School of Forestry,Northeast Forestry University,Harbin 150040,P.R.China) |
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| Abstract: | Content of soil total free amino acids (TFAA) was measured in virgin forest and secondary forest of Korean pine in Liangshui National Nature Reserve.The relationships between TFAA and soil ammonium nitrogen,nitrate nitrogen,moisture content,organic matter,total nitrogen and hydrolysable nitrogen were also analysed.The variation in TFAA content in both the virgin forest and the secondary forest of Korean pine could be described as a V-shaped curve from July to September.TFAA,NH+4-N,NO-3-N in the virgin fores... |
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| Keywords: | Korean pine virgin forests Secondary forests Free amino acid contents Seasonal dynamics |
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