The research of combined pollution in water environment in the past is mostly about phytoplankton to different kinds of diatoms. But there are few reports about combined pollution between heavy metals and pesticides to benthic algae.The habitat of benthic algae is not like phytoplankton so the response of two kinds of algae to stressors may not same. So find the response of benthic algae to heavy metals and pesticides can help us to understand the effects of stressors to water environment in more comprehens...