不同森林类型枯落物持水特性研究  

Study on the Water-holding Characteristics of Different Forest Types of Dead Litter

作　　者：陈汉忠 CHEN Han-zhong(Yongfu Forestry Station,Zhangping Forestry Bureau,Zhangping,Fujian 364401)

机构地区：[1]福建省漳平市林业局永福林业站,福建漳平364401

出　　处：《安徽农业科学》2024年第1期101-104,共4页Journal of Anhui Agricultural Sciences

摘　　要：为明确亚热带典型人工林植被群落的水源涵养功能,选取福建省漳平市典型地段的杉木(Cunninghamia lanceolata)林、毛竹(Phyllostachys edulis)林、油茶(Camellia oleifera)林为研究对象,采取室内浸泡法测定林下未分解层和半分解层的枯落物持水性能。结果表明:3种森林类型枯落物厚度在2.07~3.23 cm,具有显著差异(P<0.05)。3种森林类型枯落物总蓄积量在5.40~8.31 t/hm^(2),表现为杉木林>毛竹林>油茶林。3种森林类型枯落物的最大持水量总和在2.79~4.66 t/hm^(2),表现为杉木林>毛竹林>油茶林,枯落物最大持水率在115.98%~153.68%,杉木林最大,油茶林最小。3种枯落物持水量与浸泡时间呈对数函数关系,吸水速率与浸泡时间呈幂函数关系。In order to clarify the water-holding function of typical vegetation communities in subtropical plantation forests,this paper selected Chinese fir(Cunninghamia lanceolata),moso bamboo(Phyllostachys edulis)and Camellia oleifera forests in a typical section of Zhangping City,Fujian Province as research objects.The water holding capacity of the undecomposed and semi-decomposed layers of the forest understory was determined by indoor soaking.The results showed that the thickness of dead litter of the three forest types ranged from 2.07 to 3.23 cm,with significant differences(P<0.05).The total volume of dead litter storage of the three forest types ranged from 5.40 to 8.31 t/hm^(2),with Cunninghamia lanceolata forests>Phyllostachys edulis forests>C.oleifera forests.The total maximum water holding capacity of dead litter of the three forest types ranged from 2.79 to 4.66 t/hm^(2),with the maximum water holding capacity of Cunninghamia lanceolata forests>Phyllostachys edulis forests>C.oleifera forests.The mean value of maximum water holding capacity of dead fallout varied from 115.98%to 153.68%,with Chinese fir forest being the largest and oil tea forest being the smallest.The water holding capacity of three types of dead fallout was a logarithmic function of soaking time,and the water absorption rate was a power function of soaking time.

关 键 词：森林类型 枯落物 持水特性 

分 类 号：S714.7[农业科学—林学]