抚育间伐对辽东山区人工红松林土壤物理性质及持水特性的影响

发布时间：2018-03-10 19:03

  本文选题：抚育间伐　切入点：辽东山区　出处：《东北林业大学学报》2016年05期 　论文类型：期刊论文

【摘要】：通过野外调查取样和室内测试与分析,研究了不同抚育间伐强度下,人工红松林土壤物理性质及其持水特性。结果表明:与对照相比,0~20 cm土层,弱度、中度和强度抚育间伐处理的土壤密度分别减少了1.36%、17.10%、13.46%;土壤总孔隙度分别是对照的1.02、1.14、1.23倍,土壤毛管孔隙度分别是对照的1.00、1.14、1.21倍,土壤非毛管孔隙度分别是对照的1.13、1.14、1.40倍;土壤最大持水量与对照相比分别提高了0.52%、13.90%、23.18%,土壤非毛管持水量分别高出了12.79%、14.30%、39.65%;土壤饱和入渗系数分别是对照的2.81、3.45、4.99倍。20~40 cm土层所表现出的规律与0~20 cm土层基本一致,方差分析显示,各抚育间伐处理均能显著改善土壤的物理性质及其持水性能,且以中度及强度抚育间伐处理的效果更优。
[Abstract]:Through field investigation and laboratory test and analysis, the soil physical properties and water holding characteristics of artificial Korean pine forest under different tending and thinning intensities were studied. The results showed that the soil layer of 20 cm was weaker than that of the control. The soil density of moderate and intensive thinning treatments decreased by 1.36 ~ 17.10 ~ 13.46%, the total porosity of soil was 1.02 ~ 1.14 ~ 1.23 times of that of the control, the porosity of soil capillary was 1.00 ~ 1.141.21 times of that of the control, and the soil non-capillary porosity was 1.131.141.40 times of that of the control, respectively. Compared with the control, the maximum soil water holding capacity increased by 0.52% 13.90% and 23.18, respectively, and the soil non-capillary water holding capacity was 12.79 ~ 14.30 ~ 39.65, respectively, and the saturated infiltration coefficient of the soil was 2.81 ~ 3.45 ~ 4.99 times as much as that of the control, and the regularity of the soil layer of 20~ 40 cm was basically the same as that of the 0 ~ 20 cm soil layer, and the variance analysis showed that the soil saturation infiltration coefficient was the same as that in the control soil layer of 2.81 ~ 3.45 ~ 4.99 times. The physical properties and water holding capacity of soil were significantly improved by various tending and thinning treatments, and the effects of moderate and intensive thinning treatments were better.
【作者单位】： 辽宁省森林经营研究所;
【基金】：林业公益性行业科研专项(201404303) 辽宁省科学技术计划项目(20121149) 林业科技创新平台运行补助项目(2015-LYPTDW-048)
【分类号】：S714.7
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本文编号：1594657