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作 者 ：项文化 田大伦 蔡宝玉 钟建德

期 刊 ：林业科学 1997年 33卷 zk2期 页码：175-180

关键词：湿地松；凋落物；养分归还；林分密度；

Keywords:Slash pine, Litter, Nutrient return, Density,

摘 要 ：对不同密度湿地松林的年凋落物量、林地凋落物现存量及其元素含量和养分归还量进行分析测定，结果表明：湿地松林的年凋落物量为6191.5—7123.9kg/hm²·a，林地凋落物现存量为9.75—17.4 t/hm²，年凋落物养分归还量为90.43—105.09kg/hm²·a，它们均随密度的增大而增加。林地凋落物养分的总贮量为191.16—281.89kg/hm²，在密度为300株/hm²左右其总贮量最高。这说明森林凋落物是一个庞大的养分贮存库，并受林分结构的控制，对它进行科学管理，对于维护林地地力，提高森林生产力具有重要的意义。

Abstract:The annual amount of litter and nutrient return in different density Slash pine plan-tations，the existing storage of the litter，and the content of elements in the litter were measured and analysed．The results show that the annual amount of litter is 6191.5—7123.9kg/hm²·a．the existing storage of the litter on the stands is 9.75—17.4t/hm²．The annual return amount of litter nutrient is 90.43—105.09kg/hm²·a，and the total amount of nutrient stored in the litter is 191.16—281.89kg/hm²，in which the highest storage was occurred at the density of 3000 stems/hm²．The data above proves that forest litter forms a huge storage of nutrient，which plays an important role in main-taining site quality and raising forest productivity．

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