| 巢湖十五里河沉积物磷吸收潜力及对外源碳的响应 |
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| 引用本文： | 李如忠,鲍琴,张瑞钢,陈慧.巢湖十五里河沉积物磷吸收潜力及对外源碳的响应[J].环境科学,2019,40(6):2730-2737. |
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| 作者姓名： | 李如忠 鲍琴 张瑞钢 陈慧 |
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| 作者单位： | 合肥工业大学资源与环境工程学院,合肥,230009;合肥工业大学土木与水利工程学院,合肥,230009 |
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| 摘 要： | 2017年7月(夏季)和2018年1月(冬季),在巢湖十五里河干流的城乡梯度方向选择5个代表性采样点位,采集表层沉积物样,利用实验室培养法,测算沉积物磷的总吸收潜力SPU_(live)、非生物吸收潜力SPU_(kill)和生物吸收潜力SPU_(biotic),评估不同外加碳源(乙酸钠、葡萄糖及两者的混合溶液)对SPU_(biotic)的影响水平.结果表明,十五里河沉积物SPU_(live)存在时空差异性,且表现为SPU_(kill)高于SPU_(biotic);未添加碳源时,夏季和冬季的SPU_(kill)均值分别为3.016μg·(g·h)~(-1)和3.368μg·(g·h)~(-1),SPU_(biotic)均值分别为0.784μg·(g·h)~(-1)和0.323μg·(g·h)~(-1),夏、冬两季的非生物吸收潜力存在显著差异性;添加外源碳后,不仅SPU_(biotic)有了较大幅度的提升,生物因素在沉积物磷吸收中的贡献率水平也有了明显提高,且两者均表现为添加乙酸钠效果最显著,添加葡萄糖效果次之,混合碳源的效果相对较弱.由沉积物磷的生物吸收对外源碳的响应情况,可以判定十五里河沉积物磷吸收存在一定程度的碳限制性.
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| 关 键 词： | 磷吸收潜力 生物非生物吸收 沉积物 外源碳添加 巢湖 |
| 收稿时间： | 2018/12/23 0:00:00 |
| 修稿时间： | 2019/1/11 0:00:00 |
Potential for Phosphorus Uptake by Bed Sediments and Its Response to Carbon Additions in the Shiwuli River, Chaohu Lake Basin |
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| LI Ru-zhong,BAO Qin,ZHANG Rui-gang and CHEN Hui.Potential for Phosphorus Uptake by Bed Sediments and Its Response to Carbon Additions in the Shiwuli River, Chaohu Lake Basin[J].Chinese Journal of Environmental Science,2019,40(6):2730-2737. |
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| Authors: | LI Ru-zhong BAO Qin ZHANG Rui-gang and CHEN Hui |
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| Institution: | School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China,School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China,College of Civil Engineering, Hefei University of Technology, Hefei 230009, China and School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China |
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| Abstract: | |
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| Keywords: | phosphorus uptake potential biotic and abiotic uptake sediment carbon addition Chaohu Lake |
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