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中国农学通报

中国农学通报 ›› 2019, Vol. 35 ›› Issue (36): 85-89.doi: 10.11924/j.issn.1000-6850.casb18070106

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

沉积物中生物活性磷赋存形态对耗氧有机物的响应

葛长字, 王旭阳, 李佳顺, 张玉群, 刘丽晓   

  1. 山东大学威海海洋学院
  • 收稿日期:2018-07-23 修回日期:2019-04-22 接受日期:2019-04-24 出版日期:2019-12-26 发布日期:2019-12-26
  • 通讯作者: 葛长字
  • 基金资助:
    山东省自然科学基金“牡蛎壳粉对沉积物中氮磷的双向调节机制”(ZR2016CM06)；山东省科技发展计划“复合污染海域组合式生物修复技 术研究”(2014GSF117042)。

Forms of Bioactive Phosphorus in Sediments: Responses to Oxygen-consumed Organic Matters

  • Received:2018-07-23 Revised:2019-04-22 Accepted:2019-04-24 Online:2019-12-26 Published:2019-12-26

PDF (PC)

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摘要： [目的] 本研究为验证耗氧有机物影响沉积物中生物活性磷的赋存形态的假说。[方法]以葡萄糖代替耗氧有机物，将沉积物暴露于耗氧有机物30天。[结果表明] 不充气时，葡萄糖浓度0、2、4、8 mg/L下的表层沉积物Ex-P含量为0.02±0.01、0.02±0.01、0.03±0.01、0.02±0.01 μmol/g；充气时，相应葡萄糖浓度下的表层沉积物Ex-P含量为0.03±0.00、0.03±0.01、0.03±0.01和0.06±0.02μmol/g，葡萄糖浓度8mg/L下的Ex-P含量高于葡萄糖浓度0mg/L下的（P< 5%）。不充气时，葡萄糖浓度0、2、4和8mg/L 下的表层沉积物IP含量为0.96±0.42、0.74±0.29、0.97±0.78和0.88±0.22μmol/g；充气时，相应葡萄糖浓度下的表层沉积物IP含量为0.37±0.10、0.46±0.16、0.41±0.06和0.69±0.05μmol/g，葡萄糖浓度8mg/L下的IP含量高于葡萄糖浓度0mg/L下的（P< 5%）。[结论]耗氧有机物对沉积物中生物活性磷有双重阈值作用。

关键词: 野生观赏植物, 野生观赏植物, 引种, 塞罕坝

Abstract: To verify the hypothesis that the forms of bioactive phosphorus are influenced by oxygen-consumed organic matters, sediments were exposed to oxygen-consumed organic matters for 30 days by replacing oxygenconsumed organic matters with glucose. The results showed that: if there was no air inflation, the Ex-P content in surface sediment exposed to glucose with concentration 0, 2, 4 and 8 mg/L was 0.02±0.01, 0.02±0.01, 0.03± 0.01 and 0.02±0.01 μmol/g; under air inflation, the Ex-P content in surface sediment exposed to glucose with concentration 0, 2, 4 and 8 mg/L was 0.03±0.00, 0.03±0.01, 0.03±0.01 and 0.06±0.02 μmol/g, and the Ex-P content of sediment exposed to glucose with concentration 8 mg/L was higher than that in sediment exposed to glucose with concentration 0 mg/L (P<5%); moreover, the IP content in surface sediment exposed to glucose with concentration 0, 2, 4 and 8 mg/L was 0.96±0.42, 0.74±0.29, 0.97±0.78 and 0.88±0.22 μmol/g if there was no air inflation; nevertheless, the IP content in surface sediment exposed to glucose with concentration 0, 2, 4 and 8 mg/L was 0.37±0.10, 0.46±0.16, 0.41±0.06 and 0.69±0.05 μmol/g, and the IP content of sediment exposed to glucose with concentration 8 mg/L was higher than that in sediment exposed to glucose with concentration 0 mg/L (P<5%). There is a double threshold effect of oxygen-consumed organic matters on bioactive phosphorus in sediments.

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