Department of Ecophysiology, Institute of Forestry and Rural Engineering, Estonian University of Life Sciences, Tallinn, Estonia.
Environ Monit Assess. 2011 Oct;181(1-4):83-99. doi: 10.1007/s10661-010-1815-7. Epub 2010 Dec 16.
Waste management of clinker dust by spreading it on forest soil was studied in a 25-year-old Scots pine stand on acidic sandy soil. Clinker dust (0.5 kg m⁻²), fertiliser (N, P, K, Mg, 0.05 kg m⁻²; N 190 kg ha⁻¹) and untreated soil were applied on 120-m² plots in four replicates. The fertiliser was included to confirm the nutrient limitation in the stand. Clinker dust increased the soil pH by 1.2 units relative to the pH of 4.6 in the untreated soil by the second year. Soil K and Mg concentrations were larger in the dust and fertiliser treatments. Nutrient diagnostics indicated that needles of untreated trees were deficient in N and K. Fertiliser treatment indicated that the growth of trees was limited by N, since the fertiliser tended to increase needle K, N, N/P, needle dry mass and diameters of stem and shoots. By an auxiliary dataset, no effects of the dust and fertiliser on possible excess of the micronutrient Mn were observed. Clinker dust increased needle K concentration, but due to the N limitation, there was no increase in the growth of stems, branches, shoots and needles. It was concluded that in plots of 120 m² application of clinker dust at a rate of 0.5 kg m⁻² was safe for the 21-year-old Scots pine stand in this trial on an acid nutrient-poor sandy soil during 4 years after the treatment.
在一个 25 年生的酸性沙质土壤上的欧洲赤松林中，研究了将熟料粉尘撒在森林土壤上的方法来进行粉尘废物管理。在四个重复的 120 平方米的样方上，每方各施加熟料粉尘（0.5 公斤/平方米）、肥料（N、P、K、Mg，0.05 公斤/平方米；N 为 190 公斤/公顷）和未处理的土壤。添加肥料是为了确认林分中的养分限制。与未处理土壤的 pH 值 4.6 相比，第二年熟料粉尘将土壤 pH 值提高了 1.2 个单位。在粉尘和肥料处理中，土壤 K 和 Mg 浓度更大。养分诊断表明，未处理树木的针叶缺乏 N 和 K。肥料处理表明，由于肥料趋于增加针叶的 K、N、N/P、针叶干质量以及茎和枝条的直径，树木的生长受到 N 的限制。通过辅助数据集，未观察到粉尘和肥料对可能过量的微量元素 Mn 的影响。熟料粉尘增加了针叶的 K 浓度，但由于 N 限制，茎、枝、条和针叶的生长没有增加。结论是，在这个为期 4 年的试验中，在酸性、养分贫瘠的沙质土壤上，每方 120 平方米 0.5 公斤的熟料粉尘的应用，对 21 年生欧洲赤松林在处理后的 4 年内是安全的。
