高黎贡山自然保护区土壤腐殖质组成与微量元素含量的研究

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。

A Study on Humus Composition and Contents of Trace Elements in Soil of Gaoligongshan Nature Reserve

Through analyzing nine soil samples collected from Gaoligongshan Nature tion, the contents of trace elements and the correlation were studied. The results show Reserve, the humus composied that the contents of organic matter in the forest soil of Gaoligongshan Nature Reserve was somewhat high, the content of fulvic acid was higher than humic acid and humic substance, the humus composition was good. As far as the soil with high content of organic matter was concerned, the content of fulvic acid was also high. The forest soil of Gaoligongshan Nature Reserve was rich in available boron and available manganese, and short in copper, zinc and molybdenum. There was significant positive correlation between the content of fulvic acid and available boron, significant positive correlation between the content of humic substance and whole iron. Increase the content of fulvic acid could increase the content of available boron, the iron compound in soil was possibly an important for the production of humic substance.