|
|
|
摘要: |
|
对大屏障森林公园7种林分凋落物储量和持水过程进行研究，结果表明：枯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，不同森林类型的枯落物厚度在2.2～8.1 cm，现存量4.42～9.31 t hm2，最大持水量介于4.52～14.25 t hm2，7种林分枯落物蓄积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 。
|
|
关键词:
东莞大屏嶂；凋落物；现存量；持水率；持水量；吸水速率
|
|
DOI：
|
|
分类号：
|
|
基金项目：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 |
|
|
|
WATER HOLDING CHARACTERISTICS OF LITTER IN PLANTATIONSIN DAPINGZHANG FOREST PARK,Dongguan |
|
|
|
|
|
Abstract: |
|
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 Farm, Dongguan were studied. The results showed that the litter storage was 4.42-9.31t hm-2 and its depth was 2.2-81.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 Schima superba is most greatest, and the Pinus massoniana is smallest.
|
|
Key words:
Dapinzhang Forestry Park; litter; litter storage; water-holding rate; water-holding capacity; water-absorption rate
|
过刊浏览