福建北部引种邓恩桉对土壤性质的影响

以建阳市引种的邓恩桉为研究对象,通过分析造林前后土壤肥力变化并与其他林分对比研究福建北部引种邓恩桉对土壤肥力的影响.结果表明:造林前后邓恩桉人工林土壤物理性质并未发生显著改变,营造邓恩桉人工林对土壤化学性质影响较大,增加了土壤中大部分营养元素的质量分数;与其他3种林分相比,邓恩桉人工林增加了土壤的孔隙度和含水量,改善了林地土壤的物理性质,提高了土壤中全氮、全磷、全钾的质量分数,但对其他几种营养元素的影响不显著.

Effect of Introduction Eucalyptus dunnii in Northern Fujian on Soil Property

The introduction Eucalyptus dunni of Jianyang city was used as research object. Then the changes of soil fertility before and after afforestation and the comparison between these changes and other forests were analyzed to research the effects on soil fertility of introduction Eucalyptus dunni in northern Jianyang. The results showed that:the soil physical properties of Eucalyptus dunni plantation before and after afforestation didn ’ t change significantly, but it had a larger influence on soil chemical properties to construct Eucalyptus dunni plantation because of increasing the mass fraction of most soil nutrient elements. Compared with other three stands,Eucalyptus dunni plantation had increased the soil porosity and moisture and improved the soil physical properties. Meanwhile,it had also increased the mass fraction of soil total N,P and K,but no significant effect on other several nutrients.