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阿什河上游小流域主要林分枯落物层的持水特性
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Journal Article
阿什河上游小流域主要林分枯落物层的持水特性
2012
Overview
在阿什河上游的帽儿山实验林场境内,选取代表性的6种林分类型,测定了各林分枯落物层的蓄积量,采用室内浸泡法对持水能力进行研究。结果表明：6种林分枯落物层厚度为2.8 5.5 cm;枯落物总蓄积量为9.27 39.81t·hm^-2;最大持水量为25.65 136.83 t·hm^-2;最大拦蓄水量为21.02 87.53 t·hm^-2;总有效拦蓄水深为1.726.71 mm。6种林分枯落物层的持水能力排序为：兴安落叶松林〉针阔混交林〉红松林〉蒙古栎林〉樟子松林〉水曲柳林。对6种林分枯落物的持水量、吸水率随浸泡时间的变化进行了回归拟合,表明枯落物持水量与浸泡时间存在对数关系,枯落物吸水速率与浸泡时间存在幂函数关系。
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