鼎湖山地区马尾松年轮元素含量与酸雨的关系

被引:24
作者
侯爱敏
彭少麟
周国逸
机构
[1] 苏州科技大学资源与城市科学系,中国科学院华南植物研究所,中国科学院华南植物研究所苏州,广州,广州
基金
广东省自然科学基金;
关键词
马尾松; 年轮; 元素; 酸雨;
D O I
暂无
中图分类号
S718.5 [森林生态学];
学科分类号
071012 ; 0713 ;
摘要
分析了鼎湖山马尾松年轮中几种化学元素含量的历史变化 ,并探讨了区域酸雨的影响。结果表明 ,酸雨有可能导致马尾松年轮中 N、K和 Al的含量在近 3 0 a中的上升趋势 ,和 Ca、Mg和 Mn明显的下降趋势。马尾松幼年期年轮部分元素含量异常地偏高 ,可能是幼年期生理机制不完善、对元素的选择性吸收和排斥能力较低所致 ,因此 ,以马尾松幼苗为对象进行的模拟酸雨试验结果 ,在推广至成熟的马尾松林地时可能会出现较大的偏差。
引用
收藏
页码:1552 / 1559
页数:8
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