XU Xue-hua,YU Shu-feng,CUI Li-zhi,et al.Analysis on Water Conservation Function of Larix Principis-rupprechtⅡ Man-made Forest in North Mountain of Hebei Province[J].Research of Soil and Water Conservation,2009,16(05):162-166.
冀北山地华北落叶松人工林水源涵养功能分析
- Title:
- Analysis on Water Conservation Function of Larix Principis-rupprechtⅡ Man-made Forest in North Mountain of Hebei Province
- Keywords:
- Larix Principis-rupprechtⅡ; soil infiltration; water conservation; litter; moisture retention power
- 分类号:
- S727.21;S791.22
- 摘要:
- 以混交林为对照，对冀北山地35a生的华北落叶松人工林枯落物持水量、土壤水分物理特性和土壤入渗特性进行研究。结果表明：与混交林相比，不同郁闭度林分枯落物有效拦蓄量、土壤总孔隙度、毛管蓄水量、非毛管蓄水量、总蓄水量、初渗速率和稳渗速率均小于混交林，并随林分郁闭度的降低有下降的趋势。林地枯落物最大持水量和有效持水量分别为4.45～48.02t/hm2和3.19～35.97t/hm2。林地总蓄水量随着郁闭度的增加呈现增加趋势，混交林最大，为1 262.08t/hm2，土壤的贮水量占总蓄水量的96%以上，水源涵养功能以土壤层为主，表明华北落叶松人工林水源涵养功能低下。
- Abstract:
- Compared with mixed forest,moisture retention power of litter,characteristics of soil hydrologic-physical properties and soil infiltration of 35-year different canopy density Larix Principis-rupprechtⅡ man-made forest in north mountain of Hebei province are studied.The results showed that available impoundage of litter,total porosity,capillary impoundage,non-capillary impoundage,total impoundage,start infiltration speed rate and stable infiltration speed rate of soil in mixed forest are better effect than man-made forest.These are reduced with canopy density lowering.Maximum moisture holding capacity and available moisture holding capacity of litter was 4.45～48.02t/hm2 and 3.19～35.97t/hm2.Total impoundage of forest land increased with canopy density raised.Total impoundage of woodland in mixed forest was maximal (1121.68t/hm2).The soil water storage quantity accounts for the total water-holding capacity above 95%,water conservation function by soil level primarily.The results showed that water conservation function was low in Larix Principis-rupprechtⅡ man-made forest.
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备注/Memo
收稿日期:2009-4-10;
基金项目:国家“十一五”科技支撑项目（2006BAD03A11-5）;国家林业局森林认证项目（S2006007）
作者简介:徐学华(1976-)，男，宁夏中卫人，博士生，讲师，主要从事生态学教学和科研工作。E-mail：xuehuaxu2001@163.com
通讯作者:盖力岩(1972-)，女，河北围场人，林业工程师，现从事造林工作。E-mail：geliyan@yeah.nep