摘要
凋落物即来自林冠的落叶、落枝和落花果等有机残体。既是林木自身的代谢产物,又是森林土壤养分的重要来源,在森林生态系统养分循环中发挥重要的作用。有关天然林凋落物的研究。
The evergrean breadleaved forest in Qiping forest farm is a secondary south subtropical forest dominated by Schima supcrba. This paper focuses on the quantitative dynamics, composition and main chemical components of litterfalls: (1) the annual total amount of litterfalls is 8.385t.ha^(-1), and the percentages of leaves, twigs and fruits-flowers are 51.75%, 26.11% and 22.14% respectiveIy. (2) the annual quantitative variation of litterfall is unobvious compared with seasonal variations, which is highest in March. (3) the ratio of total ash amount (290.34kg.ha^(-1)) to nitrogen amount(98.98kg·ha^(-1)) is 2.93:1, indicating the litterfalls of this forest belong to N-rich type.(4) the total amount of nine mineral elements in litterfalls is 128.5Sky.ha^(-1), from maximum to minimum, their sequence is K>Ca>Mg>S>Mn>P>Fe>Zn>Cu.
出处
《生态学杂志》
CAS
CSCD
北大核心
1991年第5期23-26,49,共5页
Chinese Journal of Ecology
关键词
凋落物
常绿阔叶林
litterfall, evergreen broadleaved forest, Qiping forest farm.
