LV Hai-bo.Study on Characteristics of Non-migrating Compounds in Soil Dissolved Organic Matter[J].Northern Horticulture,2014,38(03):159-162.
土壤溶解性有机质中非迁移成分的特性研究
- Title:
- Study on Characteristics of Non-migrating Compounds in Soil Dissolved Organic Matter
- 文章编号:
- 1001-0009(2014)03-0159-04
- 分类号:
- S 153.6
- 文献标志码:
- A
- 摘要:
- 在3 个刺槐林样地中分别设置20、40、60 cm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。
- Abstract:
-
Three polts at 20,40,60 cm 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 July
November in deeper layer，LDON showed reverse trend；the ratios were 0.01～0.55 for LDOC/DOC and 0.05～0.87 for LDON/DON；LDOM suggested high UV-absorbance and low DOC/DON value.
参考文献/References:
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备注/Memo
作者简介：吕海波(1980-)，男，山西永济人，博士，讲师，现主要从事土壤有机碳等研究工作。E-mail:lhboboo@163.com.