| 密度对毛竹林水源涵养能力的影响 |
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| 引用本文： | 陈亚刚,赖玉玲,李武,阳纯,陈赐辉,刘振兴,张卓文.密度对毛竹林水源涵养能力的影响[J].湖北林业科技,2017,46(1):7-13. |
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| 作者姓名： | 陈亚刚 赖玉玲 李武 阳纯 陈赐辉 刘振兴 张卓文 |
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| 作者单位： | 1. 湖北省桂花林场管理局 咸宁 437547;2. 华中农业大学园林艺术学院 武汉 430070;3. 华中农业大学园林艺术学院 武汉 430070;湖北省咸宁市林业局 咸宁 437000 |
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| 摘 要： | 以崇阳县毛竹为研究对象,在4种密度(D1)1 300±100、(D2)1 900±100、(D3)2 500±100及(D4)3 100±100株·hm~(-2)毛竹林分内通过标准地设置与调查对毛竹林分水源涵养能力进行了研究。结果表明,虽然不同毛竹林密度林冠层截留率之间的差异不显著,但截留量之间的差异极显著。半分解以及未分解凋落物持水量与浸泡时间之间均为对数方程,半分解以及未分解凋落物吸水速率与浸泡时间之间均为幂函数方程。不同密度凋落物最大持水量0.81~1.21 mm,并随林分密度增加而增加。凋落物总最大持水率380.39%~402.13%。林分有效拦蓄量0.75~0.92 mm,有效拦蓄率292.92%~311.31%,并密度增大而增大。毛竹林土壤土壤含水率11.21%~13.70%,土壤容重1.19~1.34 g/cm~3,毛管总孔隙度52.89%~54.77%,土壤毛管总孔隙度随土层深度的增加而减小,土壤非毛管孔隙度9.39%~10.22%。林分密度对土壤物理性状及其土壤渗透性能影响均不显著。毛竹林土壤饱和蓄水量3 173.35~3286.11 t·hm~(-2),不同密度毛竹林分土壤层饱和蓄水量之间的差异不显著。虽然不同密度毛竹林分土壤毛管蓄水量之间的差异不显著,但非毛管蓄水量差异显著。毛竹林水源涵养总量584.15~626.58 t·hm~(-2),土壤蓄水量、林冠截留量及凋落物持水量分别占96.41%~97.91%、0.79%~1.51%及1.30%~2.07%。
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| 关 键 词： | 毛竹 密度 水源涵养 崇阳 |
Effect of Forest Density on Water Conservation Capacity of Phyllostachys pubescens in Chongyang |
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| Chen Yagang,Lai Yulin,Li Wu,Yang Chun,Chen Cihui,Liu Zhengxing,Zhang Zhuowen.Effect of Forest Density on Water Conservation Capacity of Phyllostachys pubescens in Chongyang[J].Hubei Forestry Science and Technology,2017,46(1):7-13. |
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| Authors: | Chen Yagang Lai Yulin Li Wu Yang Chun Chen Cihui Liu Zhengxing Zhang Zhuowen |
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| Abstract: | Phyllostachys edulis (Moso bamboo) in Chongyang had been taken as research object.With 4 density stands, i.e, 1 300±100 stems·hm-2(D1), 1 900±100 stems·hm-2(D2), 2 500±100 stems·hm-2(D3) and 3 100±100 stems·hm-2(D4),a study of effect of stand density on water conservation capacity had been studied.Results showed that although the difference of canopy interception rate among bamboo stand density was not significant, the difference of canopy interception significant.Regressions for both semi-decomposition and no decomposition litter water holding capacity to soaking time were logarithmic equation, regressions for both semi-decomposition and no decomposition litter water absorption rate to soaking time power function equation.The maximum water holding capacity of litter in different density stand was 0.81~1.21 mm, and increased with the increase of the stand density.The total maximum water holding rate of litter was 380.39~402.13%.Stand effective interception was 0.75~0.92 mm, effective interception rate of 292.92%~311.31%, and it increased density with stand density increase.Soil moisture content was 11.21%~13.70% and soil bulk density 1.19~1.34 g/cm3.Total soil capillary porosity was 52.8%9~54.77%, soil capillary porosity decreased with the increase of soil depth, and soil non capillary porosity was 9.39%~10.22%.The effect of stand density on soil physical properties and soil permeability were not significant.Saturated soil water storage capacity of Moso bamboo forest was 3173.35~3286.11 t·hm-2, the difference of saturated soil water storage capacity among different density stand was not significant.Although the differences of soil capillary water capacity among different density stand was not significant, the difference of soil non capillary water capacity significant.The total water conservation capacity of Moso bamboo forest was 584.15~626.58 t·hm-2, the percent of soil water storage capacity, the percent of canopy conservation capacity and the percent of litter water holding capacity were 96.41%~97.91%, 0.79% ~ 1.51% and 1.30%~ 2.07%, respectively. |
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| Keywords: | Phyllostachys edulis stand density water conservation capacity Chongyang |
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