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当前位置: 首页 > 文章 > 土壤溶解性有机质中非迁移成分的特性研究 北方园艺 2014 (3) 159-162
Position: Home > Articles > Study on Characteristics of Non-migrating Compounds in Soil Dissolved Organic Matter Northern Horticulture 2014 (3) 159-162

土壤溶解性有机质中非迁移成分的特性研究

作  者：
吕海波
单  位：
渭南师范学院化学与生命科学学院
关键词：
溶解性有机质;UV吸收值;非迁移性
摘  要：
在3个刺槐林样地中分别设置20、40、60cm深度的培养坑,坑底埋入装有不含枯落物土壤的尼龙袋,装填均匀混合枯落物碎屑的土壤,研究测定非迁移性有机质(LDOM)的成分,以期对LDOM含量及特性进行研究。结果表明:实验室提取的DOM和自然迁移性DOM存在较为复杂的差别,其差异受土壤深度和外界环境影响较大;非迁移性有机碳(LDOC)含量和非迁移性有机氮(LDON)含量随深度变化并无统一特征;LDOC含量在土壤较浅层7月<11月,深层7月>11月,LDON含量反之;LDOC/DOC比率和LDON/DON比率分别为0.01~0.55、0.05~0.87;LDOM有高的UV吸收值和低的DOC/DON值。
译  名：
Study on Characteristics of Non-migrating Compounds in Soil Dissolved Organic Matter
作  者：
LV Hai-bo;College of Chemistry and Life Science,Weinan Normal University;
关键词：
dissolved organic matter;;UV-absorbance value;;non-migrating compounds
摘  要：
Three polts at 20,40,60cm were set in three acacia wood,non-migrating compounds(LDOM)was measured to explore the quantity and characteristics of it,a compact nylon bags filled by no-litter soil was buried in bottom of each hole by litter-mixed soil.The results showed that DOM distilled in experiment and those moved freely in natural ecosystem represent complicated differences,they were affected greatly by soil depths and environment;there were not obvious rule for the changes with depth of both Non-migrating organic carbon(LDOC)and Non-migrating organic nitrogen(LDON);LDOC was JulyNovember in deeper layer,LDON showed reverse trend;the ratios were 0.01~0.55for LDOC/DOC and 0.05~0.87for LDON/DON;LDOM suggested high UVabsorbance and low DOC/DON value.

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