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通过对9个采自高黎贡山国家级自然保护区土样的测定分析,对该保护区森林土壤的腐殖质组成、微量元素含量及其相关性进行了研究。结果表明,高黎贡山自然保护区森林土壤的有机质含量中等偏高;腐殖质中富里酸的含量比胡敏酸和胡敏素高,其腐殖质组成较好;有机质含量高的土壤,富里酸含量也很高。其森林土壤几乎缺乏铜、锌、钼等元素,基本不缺乏有效硼和有效锰。土壤富里酸含量与有效硼含量间有显著正相关;土壤胡敏素含量与全铁含量间有极显著正相关,与其他元素全量之间相关性均不显著。提高土壤富里酸的含量可以增加土壤有效硼的含量,土壤中大量铁化合物的存在可能是生成胡敏素的重要因素。
Based on the analysis of nine soil samples taken from the Gaoligongshan National Nature Reserve, the humus composition, trace element contents and their correlations of the forest soils in the reserve were studied. The results showed that the organic matter content of forest soils in Gaoligongshan Nature Reserve was moderately high. The content of fulvic acid in humus was higher than that of humic acid and humin and the composition of humus was good. The soil with high organic matter content was also rich in fulvic acid. The forest soil is almost lack of copper, zinc, molybdenum and other elements, the basic lack of effective boron and manganese. There was a significant positive correlation between soil fulvic acid content and available boron content. There was a significant positive correlation between soil humin content and total iron content, but no significant correlation with other elements. Increasing the content of soil fulvic acid can increase the content of available boron in soil, and the presence of a large amount of iron compounds in the soil may be an important factor for the production of humin.