马尾松人工林近自然化改造不同阶段森林凋落物持水特性研究

Water-holding Characteristics of Litter at Different Stage of Pinus massoniana Lamb. Close-to-nature Forest Improvement in Tuanfeng

笔者以湖北省团风县马尾松人工林近自然林经营过程中不同阶段森林凋落物数量及其持水量等水文特征进行了研究,结果表明:不同阶段林下凋落物的现存数量依次为:竞争选择阶段>恒续林阶段>质量形成阶段>建群阶段;不同阶段半分解层和未分解层的凋落物持水量依次为:建群阶段<质量形成阶段<竞争选择阶段<恒续林阶段。

With litter from four different close--to--nature forest improvement stages of Pinus massoniana Lamb. in Tuanfeng County, a research has been carried out into the litter quantity and its water holding capacity, the results show that the decrease speed order of litter is in the order of competitive selection stage perpetual forest stage 〉 quality of stage 〉 forest construction stage. The water holding capacity of litter both un--decomposed and half--decomposed is in following order of forest construction stage 〈 quality of stage 〈 competitive selection stage〈perpetual forest stage.