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中国农学通报

中国农学通报 ›› 2010, Vol. 26 ›› Issue (20): 141-145.

• 林学 园艺 园林 • 上一篇    下一篇

色季拉山两种典型林分枯落物持水性能

喻武 万 丹,丁晨曦,张涪平   

  • 收稿日期:2010-04-19 修回日期:2010-05-17 出版日期:2010-10-20 发布日期:2010-10-20
  • 基金资助:

    科技部项目

Study on the Water Holding Capacity of two typical Litter Layers of Mount Sejila

  • Received:2010-04-19 Revised:2010-05-17 Online:2010-10-20 Published:2010-10-20

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摘要：

本文通过对色季拉山两种典型林分枯落物持水性能进行研究，结果表明：高山松不同层次枯落物储量、最大持水量和有效拦水率均大于箭竹林；两种典型林分不同层次枯落物最大持水率差异明显，高山松未分解层和半分解层的最大持水率分别为106.54%和156.93%；箭竹林半分解层为89.08%，未分解层为232.22%，为半分解层的2.6倍。在整个实验周期枯落物的吸水速率与浸泡时间存在明显的函数关系P=a(t)、P=a?e-b(t)，枯落物的持水量与浸泡时间存在明显的函数关系：Q=aln(t) ＋b。

关键词: 新建本科院校, 新建本科院校, 教学改革, 遗传学, 双语教学, 研究

Abstract:

Based on the Water Holding Capacity of two typical Litter Layers of Mount Sejila,the results show that:The litter reserves of different levels、the maximum water holding capacity and effectively hold water rate of Pinus densata are more than Arrow bamboo;the maximum water holding rate of different levels forest litter between two typical forest stand are significant，the Maximum Water Holding Capacity of undecomposed Litter layer of Pinus densata is 106.54%，and the Maximum Water Holding Capacity of semi-decomposed Litter layer is 156.93%；the Maximum Water Holding Capacity of semi-decomposed Litter layer of Arrow bamboo is 89.08%，and the Capacity of undecomposed Litter layer is 232.22%，it is 2.6 times of the semi-decomposed layer。During the testing cycle，the sorptive rate and soaking time of Litter are obvious function P = a (t), P = a ? eb (t)，the Water holding capacity and soaking time of Litter are obvious function：Q=aln(t) ＋b.