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石质山地森林生态系统林木根系和石砾形成复杂的综合体系,为量化根系和石砾对土壤水分运移的影响,文中以鹫峰国家森林公园为研究对象,利用室内原状土柱穿透试验分析根石结构对水分运移速率的影响。结果表明:土壤深度0~40cm范围内,随着根系体积和干重的增加,水分运移速率增加,相关系数分别为0.91和0.88;石砾含量增加时,水分运移速率呈现降低趋势,显著性不强,相关系数为0.73,即:根石结构对土壤水分运移影响较复杂,水分运移速率与根系体积和干重呈正相关关系,与石砾含量呈负相关关系。
In order to quantify the influence of root system and gravel on the soil water transport, the paper takes Jiufeng National Forest Park as the research object, and uses the indoor soil column penetration test The effect of root structure on water transport rate was analyzed. The results showed that the rate of water transport increased with the increase of root volume and dry weight within the range of 0-40 cm soil depth with correlation coefficients of 0.91 and 0.88, respectively. When the content of gravel increased, the rate of water transport decreased, significantly The correlation coefficient is 0.73, that is: the influence of root structure on soil water transport is more complicated, and the rate of water transport is positively correlated with root volume and dry weight, which is negatively correlated with the content of gravel.