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采用标准样地对角线取样法,对黔中地区4种喀斯特次生林枯落物的蓄积量及其持水性能进行研究,结果表明:4种森林枯落物的蓄积量为(3.47×103)～(7.95×103)kg/hm2,马尾松林蓄积量最大,云贵鹅耳枥林最小.枯枝落叶层持水率变化范围为221.50%～256.00%,大小顺序是云贵鹅耳枥林、朴树女贞林、灌木林、马尾松林.枯枝落叶层最大持水量变化范围为(8.72×103)～(17.54×103)kg/hm2,有效拦蓄量的变化范围为(5.99×103)～(11.41×103)kg/hm2,最大持水量和有效拦蓄量的大小顺序表现出一致性,其顺序为马尾松林、灌木林、朴树女贞林、云贵鹅耳枥林.另外,4种林分半分解层不但持水率高,而且吸水速度快,其持水性能明显优于未分解层.
Using the standard sample diagonal sampling method, the litter quantity and water holding capacity of four karst secondary forests in Central Guizhou Province were studied. The results showed that the litter volume of four forest litters was (3.47 × 103) ~ 7.95 × 103 kg / hm2, and the Pinus massoniana forest had the largest stock volume and the smallest wasleana forest, the water retention rate of litter layer varied from 221.50% to 256.00% (8.72 × 103) ~ (17.54 × 103) kg / hm2, and the range of effective interception capacity was (5.99 × 103) ~ (11.41 × 103) kg / hm2, the maximum water holding capacity and the effective storage capacity showed the order of order, and the order was Pinus massoniana forest, shrub forest, Not only high water holding capacity, but also water absorption speed, its water holding capacity is obviously superior to undecomposed layer.