生态与农村环境学报 ›› 2017, Vol. 33 ›› Issue (6): 519-524.doi: 10.11934/j.issn.1673-4831.2017.06.005

• 区域环境与发展 • 上一篇    下一篇

柴河流域不同农田种植模式下沟渠底泥氮磷及有机质的赋存特征

吴晓妮1, 付登高2, 段昌群2   

  1. 1. 昆明学院生命科学与技术系, 云南 昆明 650214;
    2. 云南大学生态学与环境学院, 云南 昆明 650091
  • 收稿日期:2016-07-05 出版日期:2017-06-25 发布日期:2017-06-15
  • 通讯作者: 段昌群,E-mail:chqduan@ynu.edu.cn;付登高,E-mail:dgfu@ynu.edu.cn E-mail:chqduan@ynu.edu.cndgfu@ynu.edu.cn
  • 作者简介:吴晓妮(1987-),女,陕西商洛人,硕士,研究方向为面源污染防控及生态修复。E-mail:wuxiaoxiaoni@163.com
  • 基金资助:

    云南省应用基础研究项目(2014FD040);国家自然科学基金(31360152);国家水体污染控制与治理科技重大专项(2012ZX07102-003);昆明学院校级科研项目(XJL13012)

Nutrients Accumulation of Ditch Sediments Under Different Planting Patterns in the Chaihe Catchment

WU Xiao-ni1, FU Deng-gao2, DUAN Chang-qun2   

  1. 1. Department of Life School and Technology, Kunming University, Kunming 650214, China;
    2. Institute of Environmental Sciences and Ecological Restoration, Yunnan University, Kunming 650091, China
  • Received:2016-07-05 Online:2017-06-25 Published:2017-06-15

摘要:

于旱季及雨季末期对柴河流域不同农田种植模式下沟渠底泥进行原位采集,分析了沟渠底泥中养分含量变化特征及影响养分变化的主要因素。结果表明:除有效磷外,沟渠底泥有机质、全氮、碱解氮及全磷含量均表现为大棚 > 蔬菜地 > 玉米地,说明不同农田利用及管理方式是导致沟渠底泥养分产生差异的主要因素,而沟渠水分条件及植被的变化则导致雨季前后沟渠底泥养分呈现不同的时空差异。沟渠养分的长期积累将影响沟渠湿地系统对径流污染物的去除能力。因此,优化农田种植方式及管理模式仍是滇池流域面源污染防控中最重要的内容之一。

关键词: 种植方式, 沟渠底泥, 养分赋存, 柴河流域

Abstract:

The effect of land use, ditch vegetation and water condition on nutrients accumulation of ditch sediments under different planting patterns in the Chaihe Catchment was analyzed through in situ sampling of surface waters and sediments. The results showed that the contents of soil organic matter, total nitrogen, available nitrogen, and total phosphorus in ditch sediments followed the order:greenhouse land > vegetable land > corn field, suggesting that the land use and management is the main factor influencing nutrients accumulation of ditch sediments. The changes of ditch vegetation and water condition led to the nutrients difference of ditch sediments in the early and late rainy season. In addition, the long-term accumulation of nutrients in ditch sediments will consequently bring potential threats to the stability of the ditch wetland ecosystem on removing nonpoint source pollutants. Based on the above results, the optimization of agriculture soil planting structure and management should be the most important content in the control of agricultural nonpoint source pollutants.

Key words: planting pattern, ditch sediment, nutrients accumulation, Chaihe Catchment

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