安徽农业科学2012，Vol.40Issue(23)：11715-11717,11804,4.
10年生珍贵树种人工林凋落物归还动态及持水能力研究
The Returned Dynamics and Water Holding Characteristics of Litter of Ten Years Old Rare Tree Plantations
摘要
Abstract
[Objective ] Study the returned dynamics and water holding characteristics of litter of ten years old rare tree plantations. [ Method ] The dynamics and water holding characteristics of litters of six kinds of ten years old rare tree plantations as Tsoongiodendron odorum,Michelia hedyo-sperma, mixed forest of Magnoliaceae glanca and Castanopsis hystrix ,Betula alnoides, Michelia macclurei and Acacia melanoxylon in Guangxi were studied. [ Result ] The dynamics of littefall was mainly made of leaves, the monthly dynamics of total littefall of Tsoongiodendron odorum and Acacia melanoxylon showed the double-peak mode; Betula alnoides and Michelia hedyosperma showed the single-peak mode ; Michelia macclurei and mixed forest of Magnoliaceae glanca and Castanopsis hystrix showed the three-peak mode. Maximum values were appearing in July,while minimum values were in January. The water holding capacity ratio of litter in 6 types of forest increased rapidly in 30 minutes. In 0 - 8 h ,the water holding capacity ratio of litter had obvious rising tendency, after that, it reached saturation. [ Conclusion ] The order of water absorption rate of litter in the six tree species was Tsoongiodendron odorum > Michelia hedyosperma > mixed forest of Magnoliaceae glanca and Castanopsis hystrix > Betula alnoides > Michelia macclurei > Acacia melanoxylon. Maximum water holding capacity ratio of those six tree plantations were 470.10% ,433.95% , 405.86% ,332.89% ,304.50% and 222. 88% ,respectively. The most proportional water holding capacity were 2.53,1.92,2.21,0.77,1.23,0.46 mm, respectively.关键词
珍贵树种/凋落物/归还动态/持水特性Key words
Rare species/ Litter/ Returned dynamic/ Water holding characteristics分类
农业科技引用本文复制引用
邓力,李元强,吴庆标..10年生珍贵树种人工林凋落物归还动态及持水能力研究[J].安徽农业科学,2012,40(23):11715-11717,11804,4.基金项目
广西高峰林场珍贵及乡土树种研究项目 （）
广西区自然科学基金项目(2012GXNSFAA053053). （2012GXNSFAA053053）
