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应用生态学报 ›› 1995, Vol. 6 ›› Issue (3): 313-316.

• 研究论文 • 上一篇    下一篇

水稻-土壤生态系统对Cu、As污染的缓冲作用

张克云1, 曹宇1, 许立凡1, 苏应生1, 陈树元2, 徐和宝2, 史建文2, 谢明云2, 吴昌业3, 杨盈其3, 沈靖茹3   

  1. 1. 芜湖市环境监理所, 芜湖 241000;
    2. 江苏省中国科学院植物研究所, 南京 210014;
    3. 安徽冶炼厂, 芜湖 241009
  • 收稿日期:1994-04-25 修回日期:1994-09-08 出版日期:1995-07-25 发布日期:1995-07-25
  • 基金资助:

    安徽省自然科学基金

Buffer action to rice-soil ecosystem to Cu and As pollution

Zhang Keyun1, Cao Yu1, Xu Lifan1, Su Yingsheng1, Chen Shuyuan2, Xu Hebao2, Shi Jianwen2, Xie Mingyun2   

  1. 1. Wuhu Institute of Environmental Supervision, Wuhu 241000;
    2. Institute of Botany, Jiangsu Province and Academia Sinica, Nanjing 210014
  • Received:1994-04-25 Revised:1994-09-08 Online:1995-07-25 Published:1995-07-25

摘要: 通过对冶炼厂区周围水系、土壤和水稻中Cu、AS含量分析,探讨其对农田生态环境的影响。结果表明,各稻田耕作层渗出水和相邻塘水中的Cu平均浓度分别为0.059和0.07bmg·L-1,As为31.68和42.79μg·L-1,稻田土壤中未出现Cu、As明显的梯度累积变化以及水稻能吸收累积相当数量的Cu、As,它们大部分累积在根部。可以认为,水稻一土壤生态系统本身对Cu、AS污染具有相当大的缓冲作用。

关键词: Cu、As污染, 污水灌田, 缓冲作用, 农田生态系统, 土壤水分, 辽东栎, 树干液流速率, 环境因子, 山杨

Abstract: The Cu and As contents in waters,soils and rice plants around a smeltery are analysed,and their effects on farmland eec-environment are studied.The average concentration of Cu and As in percolated water from paddy soil and in adjacent ponds is respectively 0.059 and 0.070 mg·L-1 and 31.69 and 42.79pg·L-1.No significant variation of gradient accumulation of Cu and As is found in paddy soil, and a quite amount of Cu and As is absorbed and accumulated by rice, especially by its root.It is considered that the rice-soil ecosystem itself has a relatively high buffer action to Cu and As pollution.

Key words: Cu and As pollution, Waste water irrigation, Buffer action, Farmland ecosystem, Populus davidiana, sap flow velocity, Quercus liaotungensis, environmental factors, soil moisture