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Effects of Environmental Factors on Stream Macroalgae as Determined by Grey Correlation-Regression Analysis in a stream system(Xin'an Spring),North China

【摘要】:正The effects of environmental factors on stream macroalgae were investigated using grey correlation-regression analysis.Data were collected from July 2004 to April 2005 from Xin' an Spring,Shanxi Province,north China.The environmental variables were consisted of water temperature,pH,specific conductance,dissolved oxygen,surface current velocity,maximum depth and width.Forty-two species of stream macroalgae were identified in this spring.We established a linear regression model in which these environmental factors were included as independent variables,and the number of stream macroalgal species was the dependent variable.The results of analyses with the regression model confirmed that water temperature,current velocity,and specific conductance were the key factors affecting stream macroalgae.

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