Characteristics of Heavy Metals in Plants Growing on Cr Contaminated Area and Cr-Tolerant Plants Screening Retrospect and prospect of pollution ecology GROWTH RESPONSE AND UPTAKE DIFFERENCES BETWEEN TWO ECOTYPES OF SEDUM ALFREDII TO SOILS Cd An overview of the ecological remediation of the polluted river sediments The several key problems in ecological remediation process of soil with POPs Evaluation of the effects of ecological remediation on the water quality and biological toxicity of Dagu Drainage River in Tianjin