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研究评价巨桉(Eucalyptus grandis)植被和其相邻的山地雨林中土壤营养状况。在研究地建立了20个样方,每个小样方为20mx20m。在每个小样方内对土壤进行5个样点的采样(4角和中心点)。把每个小样方的不同点采集的土样进行混合,并独立放置。分析结果表明,巨桉植被和其相邻的山地雨林中土壤指标(全N、有效P、可交换性K、Ca和Mg含量),pH值以及全碳含量)没有明显的变化。但两种林地土壤中的粘土颗粒和可交换性N含量有明显的变化。与巨桉植被相邻的山地雨林中土壤指标比较表明,巨桉植被有提高土壤营养和全碳含量的作用。
The study evaluated the soil nutrient status of Eucalyptus grandis vegetation and its adjacent mountain rainforest. In the study established 20 quadrats, each sample side is 20mx20m. The soil was sampled 5 samples (4 corners and center points) in each sample. The soil samples collected at different points of each sample are mixed and placed separately. The results showed that there was no significant change of soil parameters (total N, available P, exchangeable K, Ca and Mg), pH value and total carbon content in Eucalyptus grandis vegetation and its adjacent mountain rainforest. However, the contents of clay particles and exchangeable N in the two kinds of forest soils changed obviously. The comparison of the soil indexes in the mountain rainforest adjacent to the Eucalyptus grandis vegetation shows that the vegetation of the Eucalyptus grandis forest plays an important role in improving soil nutrition and total carbon content.