不同土地利用方式对苏打盐碱土水溶性有机物荧光特性的影响

发布时间：2018-05-23 18:04

本文选题：土地利用方式 + 苏打盐碱土　；参考：《吉林大学学报(理学版)》2017年03期

【摘要】：利用三维荧光光谱技术考察吉林省西部不同土地利用方式(草原、旱田和水田)对苏打盐碱土水溶性有机物荧光特性的影响.结果表明:水田中有机物质的质量比最高,为27.08g/kg,草原中有机物质的质量比最低,为21.63g/kg;水溶性有机物(WEOM)的质量比为水田旱田草原,芳香化程度为草原水田旱田,其值分别为3.90,3.79,3.31L/(mg·m);WEOM三维荧光光谱在区域Ⅲ和区域Ⅴ的荧光强度最高;WEOM荧光区域积分值为类腐殖酸类富里酸类溶解性微生物的代谢产物类色氨酸蛋白质类酪氨酸蛋白质;类富里酸质量比为草原旱田水田,类溶解性微生物代谢产物的质量比为水田旱田草原,类腐殖酸质量比为旱田草原水田.即不同土地利用方式对土壤中WEOM的质量比和组成影响显著.
[Abstract]:The effects of different land use modes (grasslands, dryfields and paddy fields) on the fluorescence characteristics of water-soluble organic compounds in soda salinized soil in Western Jilin province were investigated by three-dimensional fluorescence spectroscopy. The results showed that the mass ratio of organic matter in the paddy field was the highest, 27.08g/kg, the mass ratio of organic matter in grassland was the lowest, and the water soluble organic matter (WEOM). The ratio of the mass ratio is to the dryland grassland in the paddy field, the degree of aromatization is 3.90,3.79,3.31L/ (mg. M), and the fluorescence intensity of WEOM in the region III and region V is the highest, and the integral value of the WEOM fluorescence region is the tryptophan protein, the tryptophan protein, a metabolite of the humic acid soluble microorganism. Acid protein; the mass ratio of fulvic acid is in the paddy field in the grassland. The mass ratio of the metabolites of soluble microorganism is in the dryfield grassland in the paddy field and the mass ratio of humic acid is in the paddy field. That is, the different land use methods have significant influence on the quality ratio and composition of WEOM in the soil.
【作者单位】：吉林农业大学资源与环境学院;吉林省商品粮基地土壤资源可持续利用重点实验室;吉林农业大学动物科技学院;
【基金】：吉林省自然科学基金(批准号:20170101077JC) 吉林省科技发展计划项目(批准号:20160307006NY) 现代农业产业技术体系建设专项基金(批准号:nycytx-38)
【分类号】：S153

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