采煤沉陷区不同造林树种恢复土壤酚酸物质对土壤微生物的影响
发布时间：2018-08-01 16:07
【摘要】：酚酸物质是影响微生物群落和结构的最重要因子之一,研究酚酸物质在不同造林树种土壤中的变化规律及其与微生物群落结构的关系,有助于更好地了解和揭示采煤沉陷区恢复造林条件下微生物群落变化的机制.本研究在双鸭山宝山采煤沉陷区的撂荒地基础上营造三针一阔(红松、落叶松、樟子松和杨树)人工林,测定这4种造林地土壤酚类物质、11种酚酸物质和微生物群落结构.结果表明:复合态酚含量总体表现为人工林显著高于撂荒地,其中,落叶松人工林和杨树人工林的复合态酚含量较高,落叶松人工林和红松人工林的总酚含量显著高于撂荒地,红松人工林的水溶性酚含量显著高于撂荒地;在11种酚酸物质中,阿魏酸、松香酸、β-谷甾醇、齐墩果酸、莽草酸、亚油酸和硬脂酸的含量在人工林土壤中较高.土壤酚类物质与土壤微生物生物量不存在显著的相关关系,个别的酚酸物质与土壤微生物的相关关系显著,其中,阿魏酸、松香酸和β-谷甾醇对土壤微生物生物量有明显的促进作用,与真菌和真菌/细菌存在显著的正相关关系.杨树人工林的酚酸物质含量较高,说明营造杨树人工林对采煤沉陷区的土壤恢复有益.
[Abstract]:Phenolic acid is one of the most important factors affecting microbial community and structure. It is helpful to better understand and reveal the mechanism of microbial community change under reforestation condition in coal mining subsidence area. On the basis of abandoned land in Baoshan coal mining subsidence area of Shuangyashan, this paper established a three-needle and one-width plantation (Pinus koraiensis, Larix gmelinii, Pinus sylvestris and poplar) to determine the structure of 11 phenolic acids and microbial communities in soil phenolic substances in these four forest lands. The results showed that the content of compound phenol in plantation was significantly higher than that in abandoned land, and the total phenol content of larch plantation and poplar plantation was higher than that of abandoned land, and the total phenol content of larch plantation and Korean pine plantation was significantly higher than that of abandoned land. In 11 phenolic acids, the contents of ferulic acid, rosin acid, 尾 -sitosterol, oleanolic acid, shikimic acid, linoleic acid and stearic acid were higher in plantation soil. There was no significant correlation between soil phenolic substances and soil microbial biomass, but a significant correlation between individual phenolic acids and soil microorganisms, among which ferulic acid, ferulic acid, Rosin acid and 尾 -sitosterol significantly promoted soil microbial biomass and had a significant positive correlation with fungi and fungi / bacteria. The content of phenolic acid in poplar plantation was high, which indicated that poplar plantation was beneficial to soil restoration in coal mining subsidence area.
【作者单位】： 东北林业大学林学院;吉林省林业科学研究院;
【基金】：中央高校基本科研基金项目(2572016EAJ1) 国家自然科学基金项目(NSFC31170583)资助~~
【分类号】：S714
，
本文编号：2158110
[Abstract]:Phenolic acid is one of the most important factors affecting microbial community and structure. It is helpful to better understand and reveal the mechanism of microbial community change under reforestation condition in coal mining subsidence area. On the basis of abandoned land in Baoshan coal mining subsidence area of Shuangyashan, this paper established a three-needle and one-width plantation (Pinus koraiensis, Larix gmelinii, Pinus sylvestris and poplar) to determine the structure of 11 phenolic acids and microbial communities in soil phenolic substances in these four forest lands. The results showed that the content of compound phenol in plantation was significantly higher than that in abandoned land, and the total phenol content of larch plantation and poplar plantation was higher than that of abandoned land, and the total phenol content of larch plantation and Korean pine plantation was significantly higher than that of abandoned land. In 11 phenolic acids, the contents of ferulic acid, rosin acid, 尾 -sitosterol, oleanolic acid, shikimic acid, linoleic acid and stearic acid were higher in plantation soil. There was no significant correlation between soil phenolic substances and soil microbial biomass, but a significant correlation between individual phenolic acids and soil microorganisms, among which ferulic acid, ferulic acid, Rosin acid and 尾 -sitosterol significantly promoted soil microbial biomass and had a significant positive correlation with fungi and fungi / bacteria. The content of phenolic acid in poplar plantation was high, which indicated that poplar plantation was beneficial to soil restoration in coal mining subsidence area.
【作者单位】： 东北林业大学林学院;吉林省林业科学研究院;
【基金】：中央高校基本科研基金项目(2572016EAJ1) 国家自然科学基金项目(NSFC31170583)资助~~
【分类号】：S714
，
本文编号：2158110
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