| 水稻土对磷的吸持能力及环境风险研究 |
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| 引用本文： | 李发,王农,徐应明,王润珑,孙约兵.水稻土对磷的吸持能力及环境风险研究[J].环境科学学报,2017,37(12):4734-4739. |
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| 作者姓名： | 李发 王农 徐应明 王润珑 孙约兵 |
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| 作者单位： | 1. 东北农业大学资源与环境学院, 哈尔滨 150030;2. 农业部环境保护科研监测所, 农业部产地环境污染防控重点实验室, 天津 300191,1. 农业部环境保护科研监测所, 农业部产地环境污染防控重点实验室, 天津 300191;2. 农业部环境保护科研监测所, 天津市农业环境与农产品安全重点实验室, 天津 300191,1. 农业部环境保护科研监测所, 农业部产地环境污染防控重点实验室, 天津 300191;2. 农业部环境保护科研监测所, 天津市农业环境与农产品安全重点实验室, 天津 300191,1. 东北农业大学资源与环境学院, 哈尔滨 150030;2. 农业部环境保护科研监测所, 农业部产地环境污染防控重点实验室, 天津 300191,1. 农业部环境保护科研监测所, 农业部产地环境污染防控重点实验室, 天津 300191;2. 农业部环境保护科研监测所, 天津市农业环境与农产品安全重点实验室, 天津 300191 |
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| 基金项目： | 天津市自然科学基金重点项目（No.17JCZDJC34200）；公益性行业（农业）科研专项（No.201203045）；中国农业科学院基本科研业务费专项院级统筹项目（No.2017-syb-1） |
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| 摘 要： | 以湖南Cd污染区水稻土为供试土壤,研究了土壤活性Al(Al_(ox))、活性Fe(Fe_(ox))、磷吸持指数(PSI)、吸持饱和度(DPSS)和释放风险指数(ERI)及其相关性关系.结果表明:供试水稻土中Al_(ox)和Fe_(ox)含量变异性较大,分别为55.67~1495.90 mg·kg~(-1)和1.50~13.63 g·kg~(-1),但有效磷含量变化幅度不大.水稻土吸持磷能力较弱,全部样品中PSI均低于30,但水稻土磷的吸持饱和度较低,85%的土壤样品DPSS低于磷淋失临界值(15%),且磷释放失风险(ERI)较小.水稻土中Al_(ox)含量和Fe_(ox)含量与PSI存在显著正相关关系(p0.05),而与DPSS之间表现为显著负相关关系(p0.01),DPSS和PSI呈现为显著负相关关系(p0.01).
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| 关 键 词： | 磷 水稻土 吸持指数 吸持饱和度 环境风险 |
| 收稿时间： | 2017/5/19 0:00:00 |
| 修稿时间： | 2017/6/27 0:00:00 |
Characteristics of phosphorus sorption capacity and its environmental risk in paddy soils |
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| LI F,WANG Nong,XU Yingming,WANG Runlong and SUN Yuebing.Characteristics of phosphorus sorption capacity and its environmental risk in paddy soils[J].Acta Scientiae Circumstantiae,2017,37(12):4734-4739. |
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| Authors: | LI F WANG Nong XU Yingming WANG Runlong and SUN Yuebing |
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| Institution: | 1. College of Resources and Environment, Northeast Agricultural University, Harbin 150030;2. Key Laboratory of Original Environmental Pollution Prevention and Control, Ministry of Agriculture, Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191,1. Key Laboratory of Original Environmental Pollution Prevention and Control, Ministry of Agriculture, Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191;2. Tianjin Key Laboratory of Agro-Environment and Agro-Product, Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191,1. Key Laboratory of Original Environmental Pollution Prevention and Control, Ministry of Agriculture, Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191;2. Tianjin Key Laboratory of Agro-Environment and Agro-Product, Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191,1. College of Resources and Environment, Northeast Agricultural University, Harbin 150030;2. Key Laboratory of Original Environmental Pollution Prevention and Control, Ministry of Agriculture, Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191 and 1. Key Laboratory of Original Environmental Pollution Prevention and Control, Ministry of Agriculture, Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191;2. Tianjin Key Laboratory of Agro-Environment and Agro-Product, Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191 |
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| Abstract: | The parameters Alox, Feox, phosphorus soil index (PSI), degree of P sorption saturation (DPSS), and environmental risk index (ERI) in Cd contaminated paddy soil samples of Hunan Province were investigated. The results show the contents of Alox and Feox had a large variability, being 55.67~1495.90 mg·kg-1 and 1.50~13.63 g·kg-1, respectively, but the available P had small variability. The sorption capacity of P by different paddy soil was low, and PSI values in all samples were below 30. Meanwhile, DPSS of paddy soils was low, and 85% of soil samples were below the threshold of P loss (15%) with low ERI of P. There was a remarkable positive correlation between Alox, Feox and PSI (p < 0.05), and extremely significant negative correlation with DPSS (p < 0.01). DPSS was highly significant correlated with PSI(p < 0.01). |
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| Keywords: | phosphorus paddy soil phospuorus soil index degree of P sorption saturation environmental risk |
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