不同林分枯落物层持水特性研究

Water holding capacity of litter in different types of stand

通过对赣西北大坑小流域不同林分枯落物累积量及持水量的测定，结果表明：（1）不同林分枯落物累积量差异较大，其中杉木林地的累积枯落物量最大，其次为马尾松，枫香、橙木等阔叶林地的累积枯落物量较小；（2）不同林分枯落物的持水量差异很大，其中杉木林为1．43～4．23mm，马尾松为1．2—4，91mm，枫香为1．90-3．90mm，灌木为1．30—3．10mm；（3）马尾松和草本枯落物的饱和持水量最大，而且在降雨初期的吸水速度也都比杉木和油茶等为快．

Water holding capacity and the cumulant of litter layer in different forest were researched in Dakeng small watershed in the northwest of Jiangxi Province. The results show that： （ 1 ） The cumulant of litter layer differentiated among the stands. The cumulative amount of Chinese Fir was the largest, followed by pine, Liquidambar, R. Wood, and the cumulnt in litter hardwood forest is smaller; （2）Water holding capacity differentiated among the stands,with the water holding capacity of 1.43 - 4.23 mm for Chinese fir, 1.2 - 4.91 mm for pine and 1.90 - 3.90 mm for Liquidambar, 1.30 - 3.10 mm for shrub; （3） Pine and herb litter have the largtest saturated water capacity and their speed of absorbing rain is faster than Chinese Fir and oil tea.