›› 2008, Vol. 51 ›› Issue (3): 336-341.

• 研究论文 • 上一篇    下一篇



  • 出版日期:2010-07-27 发布日期:2008-03-20
  • 通讯作者: 杜瑞卿

The correlation between EPT community distribution and environmental factors

DU Rui-Qing   

  • Online:2010-07-27 Published:2008-03-20

摘要: 为了研究EPT昆虫与水环境因子的相关性,在2006年6-7月和9-10月分季在丹江口水库两条主水源河流上分设5个采样点,对EPT昆虫和水质采样检测。结果共检测到EPT昆虫780头,为12科16种(或种团),水质理化指标7项。简单相关分析与复相关分析都表明,氮浓度、磷浓度、生化需氧量与EPT昆虫密度呈极显著正相关(P<0.01),与EPT昆虫的种数呈极显著负相关(P<0.01)。典型相关分析表明,EPT昆虫组与环境因子组有极显著的正相关(P<0.0001),EPT昆虫组主要目为蜉蝣目和襀翅目,环境因子组主要因子为氮浓度、磷浓度、生化需氧量。由此得出:即使在低污染、低营养程度的水环境下,EPT昆虫与环境因子也表现出群体的显著相关性,环境因子对EPT昆虫分布有重要影响。

关键词: EPT昆虫, 环境因子, 水质监测, 典型相关

Abstract: In order to study the correlation between EPT insects and environmental factors, five sampling sites were respectively selected to test EPT insects and the quality of water in the two major water source rivers of Danjiangkou Reservoir from June to July and September to October in 2006. In total, 780 individuals of 16 species (or species groups) in 12 families of EPT insects were collected, and seven physical and chemical monitoring indexes related to water quality were assayed. Both simple and multiple correlation analysis showed that the nitrogen concentration, phosphorus concentration, biochemical oxygen demand were significantly positively correlated with the density of EPT insects (P<0.01), but negatively correlated with the species number (P<0.01). Canonical analysis showed that the groups of EPT insects, which were mainly Ephemeroptera and Plecoptera, were significantly positively correlated with such main environmental factors as the nitrogen concentration, phosphorus concentration, and biochemical oxygen demand P<0.0001. So it is concluded that even in the low pollution and nutrition water environment, EPT insects were significantly correlated in groups with environmental factors, and were greatly affected by environmental factors.


Key words: EPT insects, environmental factors, water quality monitoring, canonical correlation