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[目的]进行琼中地区3种森林类型(桉树人工林、橡胶林、天然次生林)林下枯落物现存量及持水量特征研究。[方法]以研究区内3种主要森林类型林下枯落物作为调查研究对象,进行林下枯落物采集及现存量计算和枯落物持水量及吸水速率的测定。[结果]结果表明,林下枯落物现存量大小为天然次生林(7.70 t/hm2)>橡胶林(3.25 t/hm2)>桉树人工林(2.39 t/hm2)。未分解层最大持水率为桉树人工林(226.8%)>天然次生林(220.6%)>橡胶林(183.5%);半分解层最大持水率顺序为桉树人工林(221.4%),橡胶林(160.8%)和天然次生林(144.8%)。[结论]天然次生林枯落物层与人工林相比具有更为重要的水文生态意义。
[Objective] The research aimed to study the existing and litter characteristics of litter under three forest types (Eucalyptus plantation, rubber plantation and natural secondary forest) in Qiongzhong area. [Method] With three kinds of forest litters in the study area as the research object, the forest litter collection, the calculation of the existing stock, the determination of litter water holding capacity and water absorption rate were carried out. [Result] The results showed that the existing stock of forest litter was 7.70 t / hm2> 3.25 t / hm2> eucalyptus plantation (2.39 t / hm2). The maximum water holding rate of undegraded layer was eucalyptus plantation (226.8%), natural secondary forest (220.6%) and rubber plantation (183.5%). The maximum water retention of semi-decomposed layer was eucalyptus plantation (221.4% 160.8%) and natural secondary forest (144.8%). [Conclusion] The litter layer of natural secondary forest had more important eco-ecological significance than artificial forest.