不同立地因子对泡桐人工林生长量及土壤理化性质的影响

Effects of Different Site Factors on the Growth and Soil Physical and Chemical Properties of Paulownia Plantation

为筛选出最适合泡桐人工林生长的立地条件,对湖北荆门地区不同立地条件下的泡桐人工林生长量指标和土壤理化性质指标进行了测定、比较和分析。结果表明:坡位是影响泡桐人工林生长量及土壤理化性质的重要立地因子,坡位对年均单位面积蓄积量、土壤有机质质量分数、毛管持水量和毛管孔隙度等指标存在显著影响。坡度、坡向等立地因子对泡桐人工林生长量及土壤理化性质均无显著影响。坡度、坡向、坡位等3个立地因子的交互作用对泡桐人工林生长量及土壤理化性质的影响较小。

In order to select the most suitable site conditions for the growth of Paulownia plantation,the growth and soil physical and chemical properties of Paulownia plantation under different site conditions in Jingmen City of Hubei Province were measured,compared and analyzed.The slope position was an important site factor affecting the growth and soil physical and chemical propertiesof Paulownia plantation.The effects of slope position on the average annual unit area volume,soil organic matter content,capillary moisture capacity and capillary porosity of Paulownia plantation were significant level.All the growth index and soil physical and chemical properties index of Paulownia plantation had no significant level for slope and aspect.The interaction between slope,aspect and slope position had no significant level on the growth and soil physical and chemical properties of Paulownia plantation.