欢迎访问林业科学,今天是

›› 1997, Vol. 33 ›› Issue (zk2): 175-180.

• 论文及研究报告 • 上一篇    下一篇

不同密度湿地松林凋落物量及养分特性的研究

项文化 田大伦 蔡宝玉 钟建德   

  1. 中南林学院 株洲412006;广西禄峰山林场 武宣545000
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1997-11-25 发布日期:1997-11-25

STUDIES ON THE AMOUNT OF LITTER AND NUTRIENT RETURN IN SLASH PINE PLANTATIONS WITH DIFFERENT DENSITY

Xiang Wenhua,Tian Dalun,Cai Baoyu,Zhong Jiande   

  1. Central-South Forestry CoHege Zhuzhou 412006;Lufeng Mountain Forest Farm in Guangxi Autonomous Region Wuxuan 545000
  • Received:1900-01-01 Revised:1900-01-01 Online:1997-11-25 Published:1997-11-25

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。

关键词: 湿地松, 凋落物, 养分归还, 林分密度

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.

Key words: Slash pine, Litter, Nutrient return, Density