摘要
采用野外调查和室内浸泡法对猫儿山水青冈(Fagus longipetiolata)天然林不同分解层凋落物的储量、持水量、持水率和吸水速率进行研究。结果表明,未分解层、半分解层和全分解层的干凋落物储量分别为1.02、1.07、2.28 t/hm2。不同分解层凋落物的持水量和吸水速率在整个浸泡试验过程中均表现为全分解层>半分解层>未分解层;持水率表现为半分解层>未分解层>全分解层。方程拟合结果表明,不同分解层的凋落物持水量、持水率与浸泡时间呈对数关系;凋落物吸水速率与浸泡时间呈幂指数关系。
The litter amount,water holding capacity,water holdup and water absorption rate of different decomposed layers in Fagus longipetiolata natural forest of Mao’er mountain were studied with field investigation and indoor soaking methods.Results showed that dry litter accumulation of undecomposed,semi-decomposed and decomposed layers were 1.02,1.07 and 2.28 t/hm2,respectively.The orders of water holding capacity and water absorption rate of litter were decomposed layer>semi-decomposed layer>undecomposed layer,but water holdup was semi-decomposed layer>undecomposed layer>decomposed layer during the whole soaking period.The model fitted results showed that relationships between water holding capacity,water holdup and soaking time were logarithmic,and there was power exponent relationship between water adsorption rate and soaking time.
作者
宋贤冲
田红灯
谭一波
叶建平
王会利
曹继钊
Song Xianchong;Tian Hongdeng;Tan Yibo;Ye Jianping;Wang Huili;Cao Jizhao(Guangxi Forestry Research Institute,Guangxi Key Laboratory of Superior Timber Trees Resource Cultivation,Nanning 530002,China;Guangxi Lijiang River Source Forest Ecosystem Research Station,Guilin 541316,China;Bureau of Guangxi Mao’er Mountain Nature Reserve,Guilin 541316,China)
出处
《广西林业科学》
2019年第3期366-370,共5页
Guangxi Forestry Science
基金
广西林科院基本科研业务费专项(林科201807号)
广西自然科学基金项目(2016GXNSFBA380051)
广西林业科研与推广项目(GL2019KT17)
广西优良用材林资源培育重点实验室自主课题(16-A-04-01)
关键词
猫儿山
青冈天然林
持水量
持水率
吸水速率
Mao’er mountain
Fagus longipetiolata natural forest
water holding capacity
water holdup
water absorption rate
