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张家界大鲵生态繁育池水质

宋英杰1,2,罗庆华1,2*,胡骁2,3,王寒1,2,魏梦雅2#br#   

  1. (1吉首大学林产化工工程湖南省重点实验室, 湖南张家界 427000; 2吉首大学城乡资源与规划学院大鲵资源保护与综合利用湖南省工程实验室, 湖南张家界 427000; 3吉首大学生物资源与环境科学学院, 湖南吉首 416000)
  • 出版日期:2017-06-10 发布日期:2017-06-10

Water quality of ecological breeding pond for Chinese giant salamander (Andrias davidianus) in Zhangjiajie City.

SONG Ying-jie1,2, LUO Qing-hua1,2*, HU Xiao2,3, WANG Han1,2, WEI Meng-ya2#br#   

  1. (1Key Laboratory of Hunan Forest Products and Chemical Industry Engineering, Jishou University, Zhangjiajie 427000, Hunan, China; 2Hunan Engineering Laboratory for Chinese Giant Salamander’s Resource Protection and Comprehensive Utilization, College of Resource and Planning Science, Jishou University, Zhangjiajie 427000, Hunan, China; 3College of Biological Resources and Environmental Science, Jishou University, Jishou 416000, Hunan, China).
  • Online:2017-06-10 Published:2017-06-10

摘要: 分析大鲵生态繁育池中水质变化的过程,探讨生态池中影响水质变化的主要因素,为生态繁育池结构优化提供依据。实地调查张家界市12个大鲵生态繁育场,测量其入水口、池中央与出水口的主要水质指标。结果表明:除了浊度外,各样点水质的各项指标都满足大鲵生长的需要,也满足池塘养殖水排放一级标准;生态池从入口到池中间到出口,水的浊度、溶解氧(DO)呈降低趋势,总磷(TP)、总氮(TN)、化学耗氧量(COD)和硬度(GH)呈增加趋势;大鲵生态繁育池具有良好的水自净作用,使浊度下降31.7%,由于工程结构合理以及水体有一定流速,TP、TN、COD和GH的变化维持在大鲵对水质要求范围内。生态繁育池结构简单、经济,但需要提高沉淀池的效率,以保证水的浊度符合要求。

关键词: 土壤异质性, 自助法, 常绿阔叶林, 取样设计, 最佳取样量

Abstract: In order to provide a basis for optimizing the structure of ecological breeding ponds for Chinese giant salamander (Andrias davidianus), the change processes of water quality in the ponds were analyzed and the main factors affecting the changes were discussed. Twelve ecological breeding fields in Zhangjiajie City were investigated. The main water quality indexes were mea-sured at the inlet, center and outlet of each pond. The results showed that the water quality indicators met the growth requirement for Chinese giant salamanders and the first standard of breeding water discharge standard from pond except for turbidity. From the inlet to the center, to the outlet of the ecological pond, the water turbidity and dissolved oxygen (DO) showed a decreasing trend while total phosphorus (TP), total nitrogen (TN), chemical oxygen demand (COD) and total hardness (GH) showed an increasing trend. The good selfpurification of water in the ecological breeding ponds made the turbidity fell by 31.7%. Due to the reasonable engineering structure and certain water velocity, TN, TP, COD and GH were kept within the requirements for Chinese giant salamanders. Ecological breeding pools are simple in structure and economic; however, the efficiency of settling pond needs to be further improved to insure water turbidity demand of Chinese giant salamanders.

Key words: bootstrapping, optimal sample size, evergreen broad-leaved forest, soil heterogeneity, sampling design