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林业资源管理 ›› 2014›› Issue (6): 63-68.doi: 10.13466/j.cnki.lyzygl.2014.06.015

• 科学研究 • 上一篇    下一篇

华北落叶松人工林凋落物储量及其持水特性

张愿, 马长明   

  1. 河北农业大学 林学院,河北 保定 071000
  • 收稿日期:2014-10-09 修回日期:2014-11-13 出版日期:2014-12-28 发布日期:2020-11-23
  • 通讯作者: 马长明(1980-),男,河北邯郸人,副教授,博士,主要从事森林培育学研究。Email:machangming@126.com
  • 作者简介:张愿(1988-),女,河北辛集人,在读硕士,主要从事森林培育学研究。Email:695788091@qq.com
  • 基金资助:
    国家“十二五”科技支撑计划项目“华北土石山区森林可持续经营技术研究与示范”(2012BAD22B0304);河北农业大学林学院校基金“基于天然更新的油松华北落叶松人工混交林抚育采伐技术研究”(qj201207)

Reserve and Water-holding Characteristics of Litters in Larix principis-rupprechtii Plantation

ZHANG Yuan, MA Changming   

  1. Forestry College,Agricultural University of Hebei,Baoding,Hebei 071000,China
  • Received:2014-10-09 Revised:2014-11-13 Online:2014-12-28 Published:2020-11-23

摘要: 以燕山山地主要的造林树种华北落叶松(Larix principis-rupprechtii)(16a,23a,34a,42a)和主要混交树种26a白桦(Betula platyphylla)、30a山杨(Populus davidiana)凋落物为研究对象,从不同林龄、不同组成成分、组成比例方面对凋落物的储量和持水特征展开研究。结果表明:1)华北落叶松人工林(16a,23a,34a,42a)以及26a白桦次生林、30a山杨次生林这6种林分类型的凋落物储量分别为35.75,45.50,60.00,65.94,25.40,19.39t/hm2。2)不同林龄落叶松凋落物的持水率呈现出16a>23a>34a>42a的趋势,白桦和34a华北落叶松,山杨和34a华北落叶松分别以不同比例混合的凋落物的持水率以落叶松+白桦(1∶3)的最大,凋落物持水率随着浸泡时间的增加呈指数式增加;3)不同林龄华北落叶松凋落物的吸水速率呈现16a>23a>34a>42a。6种不同比例混合凋落物的吸水速率以落叶松+白桦(1∶3)的最大。凋落物吸水速率与浸水时间之间存在幂函数关系,随浸泡时间的增加,吸水速率减小。

关键词: 华北落叶松, 凋落物, 储量, 持水率, 吸水速率

Abstract: To understand the reserves and Water-holding caracteristics of litter in Larix principis-rupprechtii,Betula platyphylla and Populus davidiana,we implemented our experiment among different Forest ages,different components and different proportion of litters in Larix principis-rupprechtii in Yanshan mountain.The results shows that (i)the reserves of 6 forest stands are 35.75,45.50,60.00,65.94,25.40,19.39t/hm2 separately.(ii)in each period,the water-holding rate of litter of different ages in Larix principis-rupprechtii plantations all present a same trend as 16a>23a>34a>42a;when we studied the different mixed modes of litter,the water-holding rate of litter of Larix principis-rupprechtii+Betula platyphylla(1:3)is the biggest.Water-holding rate increased in a way of logarithm when soak time was extended.(iii)water absorption rate reduces in turn among 16a,23a,34a and 42a.When we studied the different mixed modes of litter,the water absorption rate of litter of Larix principis-rupprechtii+Betula platyphylla(1:3)is the biggest.Water absorption rate decreases in a way of power function when soak time was extended.

Key words: Larix principis-rupprechtii, litter, reserves, water-holding rate, water absorption rate

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