亚热带常绿阔叶林和杉木人工林茎流与穿透雨的养分特征

生态学杂志 ›› 2003, Vol. ›› Issue (6): 7-11.

亚热带常绿阔叶林和杉木人工林茎流与穿透雨的养分特征

于小军, 汪思龙, 邓仕坚, 张秀永

中国科学院会同森林生态实验站, 沈阳, 110016

收稿日期:2002-09-12 修回日期:2002-11-06 出版日期:2003-12-10
基金资助:
中国科学院知识创新重要方向项目(KZCX2-405);(KZCX3-Sw-418)

Nutrient characteristics of stemflow and throughfall in evergreen broad-leaved forest and Cunninghamia lanceolata plantation forest

YU Xiaojun, WANG Silong, DENG Shijian, ZHANG Xiuyong

Huitong Experimental Station of Forest Ecology, Chinese Academy of Sciences, Shenyang 110016, China

Received:2002-09-12 Revised:2002-11-06 Online:2003-12-10

摘要/Abstract

摘要： 亚热带常绿阔叶林和杉木人工林树干茎流和穿透雨养分含量均表现季节动态变化.养分含量中,K⁺、Ca²⁺、NO₃^-浓度高,Na⁺、Mg²⁺居中,HPO₄^2-含量低,相对于林外雨,养分均出现富集化,但树干茎流养分富集化高于穿透雨.树干茎流出现强烈的酸化,而穿透雨酸化现象不明显.树种之间的茎流养分特征表现不一样,樟树和枫香总的养分浓度较高,其次为刨花楠,最后为青冈和红栲.

关键词: 常绿阔叶树种, 落叶阔叶树种, 氮, 磷, 季节变化, 养分转移

Abstract: Concentrations of major nutrients in stemflow and throughfall in evergreen broad-leaved forest and Cunninghamia lanceolata plantation forest were analysed. The results showed that concentrations of the nutrients in both stemflow and throughfall changed seasonally. The nutrients were enriched in stemflow and throughfall, and the enrichment of nutrients in stemflow was higher than that in throughfall. Among all analsyed nutrients, the concentration was found highest for K⁺,Ca²⁺ and NO₃^-, middle for Na⁺ and Mg²⁺, and lowest for HPO₄^2-. Compared with throughfall, stemflow was significantly acidified. In addition, the nutrient characteristics of stemflow for different tree species differed significantly. The total concentration of nutrients in stemflow was found highest in Cinnamomum camphora and Liquidambar formosana, middle in Machilus pauhoi, and lowest in Cyclobalanopsis glauca and Castanopsis hystrix.

Key words: Evergreen broadleaved tree, Deciduous broadleaved tree, Nitrogen, Phosphorus, Seasonal change, Nutrient retranslocation

中图分类号:

Q945

于小军, 汪思龙, 邓仕坚, 张秀永. 亚热带常绿阔叶林和杉木人工林茎流与穿透雨的养分特征[J]. 生态学杂志, 2003, (6): 7-11.

YU Xiaojun, WANG Silong, DENG Shijian, ZHANG Xiuyong. Nutrient characteristics of stemflow and throughfall in evergreen broad-leaved forest and Cunninghamia lanceolata plantation forest[J]. cje, 2003, (6): 7-11.

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