| 南淝河巢湖入湖区夏季底泥磷营养盐释放通量的估算 |
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| 引用本文： | 蔡莹,吴蕾,陈云峰.南淝河巢湖入湖区夏季底泥磷营养盐释放通量的估算[J].安徽农业科学,2011,39(22):13671-13674. |
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| 作者姓名： | 蔡莹 吴蕾 陈云峰 |
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| 作者单位： | 1. 安徽大学资源与环境工程学院,安徽合肥,230039
2. 安徽省环境科学研究院,安徽省污水处理技术重点实验室,安徽合肥230061 |
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| 基金项目： | 国家重大水专项巢湖课题项目(2008zx07103-007) |
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| 摘 要： | 目的]通过采集南淝河进入巢湖河口冲积区的原柱样底泥,实验室控温、动态模拟该区域底泥的磷释放情况,从而估算出夏季该区域底泥磷的释放通量。方法]将新鲜泥样置于150 mm高的有机玻璃柱中,用不同浓度的磷酸二氢钾溶液作为上覆水,在不同的扰动速度使其循环,并用加热泵控制水箱温度。结果]扰动对底泥中的磷释放影响较大,且符合动态条件下底泥中磷的释放量大于静态条件下释放量的规律;上覆水中的磷浓度对底泥磷的释放有很大的影响,存在一定的平衡关系。结论]在夏季,南淝河巢湖入湖区磷释放量为1.07 t/km2。
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| 关 键 词： | 底泥 磷释放 动态模拟 估算 |
Estimation of Releasing Flux of Sediment Phosphorus in Nanfei River Estuary in Chao Lake in Summer |
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| Institution: | CAI Ying et al(School of Resources and Environmental Engineering,Anhui University,Hefei,Anhui 230039) |
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| Abstract: | Objective] Phosphorus release from the sediment of Nanfei River in Chao Lake was simulated using dynamic incubation of intact sediment cores.Method] The fresh sediment was placed in test column,using different concentrations of potassium as overlying water.The test was running with the different perturbation speeds,and the water temperature was controlled with a heat pump.Result] Effects of phosphorus release in the sediment from perturbation was great and the significance was greater than the static.Phosphorus concentration in overlying water of sediment phosphorus release had a great influence.There was a balanced relationship.Conclusion] The releasing flux of phosphorus from dynamic incubations was 1.07 t/km2 in summer. |
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| Keywords: | Sediment Phosphorus release Dynamic simulation Estimation |
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