阿什河流域不同林分类型枯落物持水能力研究

对阿什河流域10种林分类型枯落物持水能力进行了测定,结果表明:阿什河流域各种林分类型枯落物现存量在5.96~16.59 t.hm-2,其中以红皮云杉人工林最高,天然杂木林最低,呈现出针叶林大于阔叶林的规律。枯落物最大持水率和有效持水率均以天然水曲柳林最高,樟子松人工林最低。变动范围分别在291.12%~405.00%和225.52%~325.14%;最大持水量和有效持水量分别在19.80~58.29 t.hm-2和15.07~46.15 t.hm-2,其中均以兴安落叶松人工林最高,人工大青杨林最低。最大持水量和有效持水量均为针叶林大于阔叶林。

Water Retentivity of Litter of Different Types of Stand in Ashihe Valley

Water retentivity of litter of 10 types of stand in Ashihe valley was dertermined.Results showed that extant quantity ranges 5.96~16.59t·hm~(-2),among them the Picea koraiensis was the highest and natural weed tree forest was the lowest and appeared the rules of coniferous forest > broad leaved forest.The maximum rate of retention and available rate of retention of natural Fraxinus mandshurica were the highest.Pinus sylvestris var.mongolica was the lowest.Changing range was 291.12% ~405.00% and 225.52%~325.14%.The maximum moisture holding capacity and available moisture holding capacity was at the range of 19.80 ~58.29 t·hm~(-2) and 15.07 ~46.15 t·hm~(-2),among them Larix gmelini plantation was the highest,artificial Populus ussuriensis forest was the lowest.The maximum moisture holding capacity and available moisture holding capacity of coniferous forest was bigger than that of broad leaved forest.