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交替冻融对东北典型土壤浸提液碳氮污染指标的影响

汪太明 王业耀 香 宝 胡 钰 王金生

汪太明, 王业耀, 香 宝, 胡 钰, 王金生. 交替冻融对东北典型土壤浸提液碳氮污染指标的影响[J]. 环境科学研究, 2011, 24(10): 1149-1153.
引用本文: 汪太明, 王业耀, 香 宝, 胡 钰, 王金生. 交替冻融对东北典型土壤浸提液碳氮污染指标的影响[J]. 环境科学研究, 2011, 24(10): 1149-1153.
WANG Tai-ming, WANG Ye-yao, XIANG Bao, HU Yu, WANG Jin-sheng. Effects of Freeze-Thaw Cycles on C and N Indices in Extracts of Typical Soil Samples from Northeastern China[J]. Research of Environmental Sciences, 2011, 24(10): 1149-1153.
Citation: WANG Tai-ming, WANG Ye-yao, XIANG Bao, HU Yu, WANG Jin-sheng. Effects of Freeze-Thaw Cycles on C and N Indices in Extracts of Typical Soil Samples from Northeastern China[J]. Research of Environmental Sciences, 2011, 24(10): 1149-1153.

交替冻融对东北典型土壤浸提液碳氮污染指标的影响

基金项目: 国家水体污染控制与治理科技重大专项(2009ZX07207-001)

Effects of Freeze-Thaw Cycles on C and N Indices in Extracts of Typical Soil Samples from Northeastern China

  • 摘要: 以黑土、暗棕壤和水稻土为例,试验研究了交替冻融对土壤溶解性污染物的影响.结果表明,15次交替冻融后(在-20和20 ℃进行冻融处理),黑土浸提液的ρ(CODCr)下降了36%,水稻土浸提液上升了8%,暗棕壤浸提液未出现明显变化;黑土浸提液的ρ(NH4+-N)下降了22%,水稻土浸提液上升了84%,暗棕壤浸提液未出现明显变化;黑土和暗棕壤浸提液的ρ(NO3--N)分别上升了1.3和1.1倍,而水稻土未出现明显变化.土壤浸提液ρ(CODCr),ρ(NH4+-N)和ρ(NO3--N)的变化主要取决于土壤含氧水平,有氧条件下浸提液的ρ(CODCr)和ρ(NH4+-N)降低而ρ(NO3--N)升高,缺氧条件下则相反.土壤浸提液的ρ(TN)主要取决于土壤C/N,冻融后黑土、暗棕壤和水稻土浸提液的ρ(TN)分别上升了30%,35%和39%.

     

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出版历程
  • 收稿日期:  2010-11-15
  • 修回日期:  2011-02-25
  • 刊出日期:  2011-10-25

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