| 三峡库区干湿交替消落区土壤磷形态 |
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| 引用本文： | 曹琳,吉芳英,林茂,黎司,王图锦.三峡库区干湿交替消落区土壤磷形态[J].长江流域资源与环境,2011,20(1):101-106. |
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| 作者姓名： | 曹琳 吉芳英 林茂 黎司 王图锦 |
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| 作者单位： | （重庆大学城市建设与环境工程学院三峡库区生态环境教育部重点实验室,重庆 400045） |
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| 基金项目： | 科学技术部中德三峡库区水环境污染过程控制与安全保障技术研究合作项目(2007DFA90660); 教育部科技创新工程重大项目培育资金项目(708071) |
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| 摘 要： | 结合三峡水库“蓄清排浊”、反季节调度模式，通过对消落区首次自然干湿交替土壤中磷的赋存形式、含量变化的分析，揭示了新生消落区土壤中磷的分布特征和释放规律。结果表明：水库夏季低水位运行时上覆水总磷含量远高于冬季枯水期高水位时上覆水总磷含量，且由于汛期径流量大，上下游上覆水总磷含量波动明显。自然干湿交替状态下土壤中不同形态磷分布规律一致，活性磷、有机磷含量变化程度剧烈，成为新生消落区上覆水内源磷负荷的主要来源，且库区首次蓄水至175 m后新生消落区土壤有机磷是土壤内源磷贡献的主要承担者。覆水初期干湿交替土壤各形态磷含量没有显著差异。覆水后消落区土壤总磷释放程度与本底土壤的总磷、有机磷、活性磷呈现出显著线性相关关系。新生消落区土壤作为潜在磷源，在成库初期对库区水质影响不大。
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| 关 键 词： | 三峡库区 消落区 磷 干湿交替 |
SOIL PHOSPHOROUS FORM ANALYSIS IN FLUCTUATING (DRY-WET CYCLING) ZONE OF THREE GORGES RESERVOIR AREA |
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| CAO Lin,JI Fang-ying,LIN Mao,LI Si,WANG Tu-jin.SOIL PHOSPHOROUS FORM ANALYSIS IN FLUCTUATING (DRY-WET CYCLING) ZONE OF THREE GORGES RESERVOIR AREA[J].Resources and Environment in the Yangtza Basin,2011,20(1):101-106. |
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| Authors: | CAO Lin JI Fang-ying LIN Mao LI Si WANG Tu-jin |
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| Institution: | (Key Laboratory of Eco environments in Three Gorges Reservoir Region, Ministry of Education|Faculty of Urban Construction and Environmental Engineering, Chongqing University, Chongqing 400045, China) |
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| Abstract: | Based on the anti-seasonal operation mode of storing the clean and discharging the muddy,the changes of soil phosphorous forms and contents were analyzed through dry-wet cycling for the first time in TGRA(Three Gorges Reservoir area),which reveals phosphorous distribution characteristics and its release laws.In summer,total phosphorous contents in the overlying water in low-water-level mode was much higher than that in high-water-level mode in winter.Moreover,total phosphorous contents in the overlying wate... |
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| Keywords: | Three Gorges Reservoir area fluctuating zone phosphorus dry-wet cycling |
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