陈思路;蔡劲松;杨柳明;郑裕雄;李艳;林成芳;

• 1:福建师范大学地理科学学院
• 2:福建师范大学湿润亚热带山地生态国家重点实验室培育基地
• 3:福建省三明市郊国有林场

摘要(Abstract)：

以亚热带地区杉木人工幼林为研究对象,利用土壤埋设电缆增温实验平台,设置增温(5±0. 5)℃和对照两个处理,探讨杉木幼林成熟叶氮、磷含量及其不同形态组分对增温的响应.经过为时1. 5 a土壤增温,对成熟叶中氮、磷及其各组分含量分别进行测定.研究结果表明:增温处理未改变成熟叶总氮及其各形态组分含量,却显著降低了成熟叶中无机磷、糖磷、不溶磷组分含量;相关分析表明成熟叶总磷含量与无机磷组分含量极显著正相关(P=0. 000),与不溶磷组分含量显著正相关(P <0. 05).增温引起成熟叶总磷显著下降及总氮/总磷的显著增加,主要是由于成熟叶中无机磷和不溶磷组分含量显著下降导致.

关键词(KeyWords)： 增温;杉木成熟叶;氮磷组分;氮磷比

Abstract:

Keywords:

基金项目(Foundation): 福建省自然科学基金资助项目(2018J01718)

作者(Authors): 陈思路;蔡劲松;杨柳明;郑裕雄;李艳;林成芳;

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