| 华北土石山区典型森林枯落物层和土壤层水文效应 |
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| 引用本文： | 赵阳,余新晓,吴海龙,宋思铭,黄枝英.华北土石山区典型森林枯落物层和土壤层水文效应[J].水土保持学报,2011,25(6):148-152. |
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| 作者姓名： | 赵阳 余新晓 吴海龙 宋思铭 黄枝英 |
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| 作者单位： | 北京林业大学水土保持学院,北京,100083 |
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| 基金项目： | 国家“十二五”科技支撑项目“海河上游水源涵养林体系构建技术研究与示范”(2011BAD38B05); 国家林业公益性行业科研专项“典型森林植被对水资源形成过程的调控研究”(201104005) |
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| 摘 要： | 以河北省围场县北沟林场内4种不同林分的枯落物层和土壤层为研究对象,对其水文效应进行初步研究.结果衰明:(1)落叶松、油松混交林枯落物蓄积量最大,为12.28 t/hm2,最大持水量为24.60 t/hm,2,有效拦蓄量为27.19 t/hm2;油松林的枯落物蓄积量为11.74 t/hm2,最大持水量为19.30 t/hm2,有效拦蓄量为22.21 t/hm2;落叶松林的枯落物蓄积量为9.32 t/hm2,最大持水量为11.60 t/hm2,有效拦蓄量为16.20 t/hm2;落叶松白桦混交林的枯落物蓄积量为5.58 t/hm2,最大持水量为12.90 t/hm,2,有效拦蓄量为13.53 t/hm2.(2)半分解层枯落物浸泡8 h已基本达到饱和,而未分解层需浸泡10 h,通过分析得出持水量与浸泡时间的关系为Q=aln(t)+b;枯落物在浸水的前30 min内吸水速率最大,6 h左右时吸水速率明显减缓,枯落物吸水速率与浸泡时间的关系为V=ktn.(3)落叶松白桦混交林土壤层持水能力最强,为377.03 t/hm2;落叶松油松混交林土壤层的持水能力最差,为241.9 t/hm,2,利用幂函数对入渗速率与入渗时间进行拟合,其相关系数均在0.95以上.
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| 关 键 词： | 枯落物层 土壤物理性质 水文效应 |
Hydrological Effects of Forest Litters and Soil in Rocky Mountain Area of Northern China |
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| ZHAO Yang,YU Xin-xiao,WU Hai-long,SONG Si-ming,HUANG Zhi-ying.Hydrological Effects of Forest Litters and Soil in Rocky Mountain Area of Northern China[J].Journal of Soil and Water Conservation,2011,25(6):148-152. |
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| Authors: | ZHAO Yang YU Xin-xiao WU Hai-long SONG Si-ming HUANG Zhi-ying |
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| Institution: | ZHAO Yang,YU Xin-xiao,WU Hai-long,SONG Si-ming,HUANG Zhi-ying(College of Soil and Water Conservation,Beijing Forestry University,Beijing 100083) |
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| Abstract: | A pilot study of hydrological effect s of litters layer and soil layer was carried out in four kinds of forest stands in Beigou forest farm,Hebei province.The result showed:(1)The litter total storage capacity of Larix principis-rupprechti mixed Chinese pine was 12.28 t/hm2,the maximum water capacity was 24.60 t/hm2,the modified interception amount was 27.19 t/hm2;the litter total storage capacity of Chinese pine was 11.74 t/hm2,the maximum water capacity was 19.30 t/hm2,the modified interception amount was... |
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| Keywords: | litter layer soil physical property hydrological effects |
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