太湖流域典型河流含氮物消减速率研究
发布时间：2018-08-20 20:14
【摘要】：采用自主研发的原位培养装置,开展了太湖流域典型河流水体含氮物消减速率及其影响因素研究.结果表明,总氮和氨氮消减速率呈现显著的空间差异性(P0.05),消减速率分别为(280.6±180.0)~(1458.8±725.7)mg/(m~3·d)、(35.2±3.7)~(343.6±88.4)mg/(m~3·d),但硝态氮消减速率(44.3±7.6)~(521.2±19.2)mg/(m~3·d))无显著的空间差异性(P0.05).微生物作用下氮素消减速率为95.0~733.1mg/(m~3·d),分别占含氮物总消减速率和总负荷的12.9%~50.3%和2.0%~13.4%,非微生物作用下氮素消减速率为180.0~996.7mg/(m~3·d),占含氮物总消减速率和总负荷的49.8%~87.0%和7.4%~25.7%,说明污染物进入水体,短期内微生物作用对含氮物消减速率的贡献较低.氮素消减速率与TN、NO_3~-、SS均呈线性相关关系(P0.05),说明TN、NO_3~-、SS在一定程度上是氮素消减作用的影响因素.
[Abstract]:The reduction rate of nitrogen content in typical rivers of Taihu Lake Basin and its influencing factors were studied by using an in situ culture device developed by ourselves. The results showed that there was significant spatial difference between total nitrogen and ammonia nitrogen reduction rates (P0.05). The subtractive rates were (280.6 卤180.0) ~ (1458.8 卤725.7) mg/ (mt3 d), (35.2 卤3.7) ~ (343.6 卤88.4) mg/ (mt3 d), but nitrate nitrogen reduction rates (44.3 卤7.6) ~ (521.2 卤19.2) mg/ (MK3 d) had no significant spatial difference (P0.05). The nitrogen abatement rate under microbial action was 95.0~733.1mg/ (mt3 d), accounted for 50.3% and 2.0% of the total nitrogen abatement rate and load, respectively). The nitrogen abatement rate under non-microbial action was 180.0~996.7mg/ (mt3 d), accounted for 49.87.0% of the total nitrogen abatement rate and the total load of the nitrogen-containing substance, respectively), which indicated that the pollutants entered the water, and the nitrogen abatement rate was 7.40.75% of the total nitrogen abatement rate and load. The contribution of microbial action to the rate of nitrogen abatement is low in the short term. There was a linear correlation between the rate of nitrogen reduction and TNN _ 3s (P0.05), which indicated that TNN _ 3 / C _ (SS) was the influencing factor of nitrogen abatement to some extent.
【作者单位】： 中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室;南京农业大学资源与环境科学学院;
【基金】：水体污染控制与治理科技重大专项(2014ZX07101-011) 国家自然科学基金(41271213) 中国科学院重点部署项目(KZZD-EW-10)
【分类号】：X522
，
本文编号：2194861
[Abstract]:The reduction rate of nitrogen content in typical rivers of Taihu Lake Basin and its influencing factors were studied by using an in situ culture device developed by ourselves. The results showed that there was significant spatial difference between total nitrogen and ammonia nitrogen reduction rates (P0.05). The subtractive rates were (280.6 卤180.0) ~ (1458.8 卤725.7) mg/ (mt3 d), (35.2 卤3.7) ~ (343.6 卤88.4) mg/ (mt3 d), but nitrate nitrogen reduction rates (44.3 卤7.6) ~ (521.2 卤19.2) mg/ (MK3 d) had no significant spatial difference (P0.05). The nitrogen abatement rate under microbial action was 95.0~733.1mg/ (mt3 d), accounted for 50.3% and 2.0% of the total nitrogen abatement rate and load, respectively). The nitrogen abatement rate under non-microbial action was 180.0~996.7mg/ (mt3 d), accounted for 49.87.0% of the total nitrogen abatement rate and the total load of the nitrogen-containing substance, respectively), which indicated that the pollutants entered the water, and the nitrogen abatement rate was 7.40.75% of the total nitrogen abatement rate and load. The contribution of microbial action to the rate of nitrogen abatement is low in the short term. There was a linear correlation between the rate of nitrogen reduction and TNN _ 3s (P0.05), which indicated that TNN _ 3 / C _ (SS) was the influencing factor of nitrogen abatement to some extent.
【作者单位】： 中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室;南京农业大学资源与环境科学学院;
【基金】：水体污染控制与治理科技重大专项(2014ZX07101-011) 国家自然科学基金(41271213) 中国科学院重点部署项目(KZZD-EW-10)
【分类号】：X522
，
本文编号：2194861
本文链接：https://www.wllwen.com/kejilunwen/huanjinggongchenglunwen/2194861.html
最近更新
教材专著
