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应用生态学报 ›› 1993, Vol. 4 ›› Issue (3): 246-249.

• 研究论文 • 上一篇    下一篇

秋茄落叶分解中营养元素释放的季节动态

范航清2, 林鹏1   

  1. 1. 厦门大学生物系, 厦门 361005;
    2. 广西红树林研究中心 北海 536000
  • 收稿日期:1991-09-11 修回日期:1992-08-13 出版日期:1993-07-25 发布日期:1993-07-25
  • 基金资助:

    国家自然科学基金资助项目

Seasonal dynamics of nutrient release from decomposing Kandelia candel fallen leaves

Fan Hangqing2, Lin Peng1   

  1. Department of Biology, Xiamen University, Xiamen 361005
  • Received:1991-09-11 Revised:1992-08-13 Online:1993-07-25 Published:1993-07-25

摘要: 研究了福建九龙江口林地红树植物秋茄落叶分解过程中K、Ca、Mg和P营养元素释放速率的季节动态.结果表明,腐解中叶片元素组成因不同营养元素损失率而变化较大.元素的损失总是快于干重损失,且损失速率为K>Mg>Ca和K>P.冬季P的损失快于Mg和Ca(P>Mg>Ca),夏季则相反(Mg>Ca>P),其余两季节差别不大.4个季节分解56天后,K、Ca、Mg、P分别损失达初始量的72—97%,51—88%,60—90%和64—79%.

关键词: 红树林, 秋茄落叶, 分解作用, 营养元素释放

Abstract: Seasonal dynamics of K,Ca,Mg and Preleases from decomposing Kandelia candel fallen leaves at Jiuiongjiang River estuary of Fujian province are studied. The results show that the element composition of decaying leaves is varied significantly with different loss rates of nutrient elements. Their loss rate is larger than dry matters' and in the order of K>Mg>Ca and K>P. p loss is faster than Mg and Ca in winter, but in contrast in summer, and no difference in other two seasons. The loss amount of K, Ca, Mg and Pin decomposing leaves after 56 days is respectively 72—97, 51-88,60—90 and 64—79% of their initial amount.

Key words: Mangrove, Kandelia candel fallen leaf, Decomposition, Release of nutrient elements