东莞大屏嶂森林公园人工林凋落物的持水特性  

Water Holding Characteristics of Litter in Plantations in Dapingzhang Forest Park,Dongguan

作　　者：杨运振 严朝东 郑潮明 林观土[2] 周毅[3] 钟锡均[3] 

机构地区：[1]东莞市大屏嶂林场,广东东莞523725 [2]华南农业大学信息学院 [3]广东省林业科学研究院

出　　处：《广东林业科技》2009年第6期76-80,共5页Forestry Science and Technology of Guangdong Province

基　　金：华南农业大学校长基金(2007X021);广东省林业局项目"广东省森林生态效益监测站建设与研究"部分研究内容

摘　　要：对广东省东莞大屏障森林公园7种林分凋落物储量和持水过程进行研究,结果表明:凋落物的吸水速率随浸泡时间呈幂函数曲线降低,持水量随浸泡时间的增加呈对数曲线增长,不同森林类型的凋落物厚度为2.2～8.1 cm,现存量4.42～9.31 t.hm-2,最大持水量介于4.52～14.23 t.hm-2,7种林分凋落物现存量和最大持水量的顺序为荷木>杉木>马占相思>藜蒴>鸭脚木>粉丹竹>马尾松,其中荷木林最大,水文生态效益显著,而马尾松林则最低。By the methods of field survey and soaking extraction, the storage, water-holding capacity, water-holding rate, and water-absorption rate of the litters in 7 difference plantations in Dapingzhang Forest Park were studied. The results showed that the litter storage was 4.42 -9.31 t ·hm^-2 and its depth was 2.2 - 8.1 cm. The water holding capacity and water holding rate of the litters increased logarithmically with soaking time while the water absorption rate assumed a power decreased function. Overall , the litter storage and max. water-holding capacity decreased in the order of Schima superba 〉 Cunninghamia lanceolata 〉 Acacia mangium 〉 Castanopsis sfissa 〉 Schefflera octophylla 〉 Bambus achungii 〉 Pinus massoniana that the S. superba is most greatest, and the P. massoniana is smallest.

关 键 词：东莞大屏嶂森林公园 凋落物 现存量 持水率 持水量 吸水速率 

分 类 号：S715.3[农业科学—林学]