Vector analysis technique and ecological sequential comparison methods were adopted to study tree growth response to the micronutrients, B, Mo, Cu, Zn, Fe, and Mn, in soils derived from various parent materials in the fcrest area of Taibu Lake region in southeast China. The results showed that the dry weight of individual current. year needle of Chinese fir (Cunninghamia lanceoIata) grown on the soil derived from granite parent rock was increased by 8% and 13% in comparison with that grown on the soils derived from sandstone and ash-tuff parent rock, respectively. And such dry weight of loblolly pine (Pinus taeda) grown on the soil derived from sandstone parent rock was increased by 21% in comparison with that on the soil derived from ash-tuff parent rock. One of the reasons for those results was that micronutrients content in the soil derived from ash-tuff parent rock were not sufficient to meet the requirement of the growth of Chinese fir and loblolly pine, i.e., micronutrients in soil were deficient and/or induced deficient. The amounts of Cu, Zn. Fe. and Mn uptake by Chinese fir and lobtolly pine were in agreement with the contents of available micronutrients in soil respectively, except for B and Mo. Meanwhile, there might exist an "antagonism" between the uptake of B versus Mo by trees, although more studies are needed to confirm it. Regression analysis indicated that amount of a soil available micronutrient was correlated to the type of parent material and its total amount in the forest floor, except for B. The F test identified that the correlation of each; equation reached the significant level to different extents, respectively. The t test confirmed that amount of available forms was mainly depended on the type of parent material for Mo, Cu, Zn and Mn but on the forest floor for Fe. There was a feedback effect of forest stand on the amount of soil available micronutrients. The ability of accumulating available micronutrients in soil was better by the sawtooth oak(Quercus acutissima) stand than by the Chinese fir stand(except for B). The ability of accumulating available Zn, Fe, Mn and Mo in soil was better by the Chinese fir stand than by the loblolly pine stand, while as for available B and Cu, by the latter was better than by the former. When discussing the effect of forest stand on the amount of soil available micronutrients, not only the amount of micronutrient in the forest floor and the parent materials but also the amount of micronutrient taken up by current-year needles have to be considered.

采用孔洞根系生长法，进行铝对杉木和湿地松根系生长影响的研究。结果表明：土壤中加入铝离子后，活性铝含量明显增加，pH值下降：孔洞中根系生物量与对照比较，虽无明显差异，但均表现出铝毒害症状，根中铝和钙的含量增加。加入钙离子后，土壤pH升高，土壤中活性铝含量显著下降，根生长得到改善；根中铝含量降低，但钙含量继续升高。这说明铝对杉木和湿地松根系有抑制作用，而钙对铝有拮抗作用。

本文综述了酸雨对酸性土壤性质的影响及由此产生的对植物生长的影响。酸雨pH值越低，我国南方酸性土壤酸化越严重，土壤中盐基离子淋失量越大，铝的活化量也越大。土壤中盐基离子大量淋失，造成植物必要养分缺乏；铝的活化能够对植物产生毒害，影响植物的正常生长，甚至引起植物的死亡。

调查分析了赣中低山区不同林下植被类型（芒萁型、蕨类型和灌木-芒萁型）对杉林土壤有效态微量元素（硼、钼、铜、锌、铁和锰）状况的影响。指出该地区森林土壤为硼、钼、铜和锰缺乏区，锌潜在缺乏区，铁富集区；与芒萁型林下植被相比，蕨类型林下植被使杉木幼林土壤有效态硼、钼、铜和锌在土壤表层（0～6cm）发生富集，但表下层含量则趋于降低；对于杉木成林，蕨类型林下植被土壤微量元素状况明显优于芒萁型林下植被。低地位级的杉木幼林通过人工整枝等抚育措施，可促进林下植被的发育，使土壤表层有效态锌、锰含量增加,但同时使土壤表层有效态硼、钼、铜等含量降低，且将更加缺乏。