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中国农学通报 ›› 2014, Vol. 30 ›› Issue (26): 150-154.doi: 10.11924/j.issn.1000-6850.2014-0043

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

滇池流域表层土壤磷素演变与积累特征研究

包立 张乃明 刘朗伶 康日峰 赵学通 张丹丹   

  • 收稿日期:2014-01-04 修回日期:2014-02-19 出版日期:2014-09-15 发布日期:2014-09-15
  • 基金资助:
    国家水体污染控制与治理科技重大专项湖泊主题滇池项目“滇池流域农田面源污染综合控制与水源涵养林保护关键技术及工程示范”(2012ZX07102-003);云南省应用基础研究重点项目“滇池磷素表生迁移规律及水生生物响应研究”(2009CC006)。

Research on Surface Soil Phosphorus Evolution and Accumulation Characteristics in Dianchi Lake

  • Received:2014-01-04 Revised:2014-02-19 Online:2014-09-15 Published:2014-09-15

摘要: 为了提供滇池富营养化治理的科学依据,本研究以滇池流域不同类型的表层土壤磷素为研究对象,主要研究了滇池流域表层土壤磷素的演变与累积特征。结果表明,近20年滇池流域表层土壤全磷、速效磷和水溶性磷的含量均随时间的推移而显著累积;不同土地利用类型,土壤全磷、速效磷和水溶性磷含量顺序一致,均为:大棚土壤>耕地土壤>建城区土壤>林地土壤,土壤全磷、速效磷和水溶性磷之间含量存在显著相关性。滇池流域土壤磷素含量都已经达到了极丰富水平,累积特征明显,磷污染风险很高。

关键词: 壳聚糖, 壳聚糖, 星斑川鲽, 生长, 脂肪含量, 抗氧化能力

Abstract: In order to provide the scientific basis for governance of Dianchi Lake, the surface layer of soil phosphorus studied different types of Dianchi Lake Basin, the author mainly studied the evolution of the surface soil phosphorus in Dianchi Lake Basin and accumulation characteristics. The results showed that: Dianchi Lake surface soil total P, Olsen-P and water soluble phosphorus content of both would accumulate by the passing time and would continue in the coming 20 years. Regarding the different land utilization type, the entire phosphorus, the content order of fast- acting phosphorus and the water- soluble phosphorus was consistent, which was: the big awning soil>plants crops the soil>to construct the city soil>the forest land soil. The content of entire soil phosphorus, fast- acting phosphorus and water- soluble phosphorus was remarkably relevant. The accumulation of phosphorus was apparent and of a high risk of loss, therefore the problem of phosphorus loss was urgent to be solved.