The ways in which earthworms perform as bioindicators of soil pollution are reviewed as follows: (1) Earthworm population in contaminated sites reflects the degree of soil pollution as a whole;
从三个方面综述了蚯蚓对土壤污染的指示作用：（1）通过调查污染区土壤中蚯蚓种群的数量和结构反映土壤污染情况；
RESULTS and CONCLUSION The quality of water and soil and the degree of pollution affect the quality of Ling-Zhi products directly.
结果与结论水质和土壤质量的好坏和污染程度都直接影响灵芝产品的质量。
Sometimes, if you do not implement the soil and groundwater survey, can not determine the degree of pollution and the extent of pollution.
有时，如果不实施土壤和地下水调查，不能确定污染状况和程度。我们会建议开展二期环境现场评估。
The degree of soil heavy metal pollution has uncertainty and its evaluation model is required to reflect this nature.
土壤重金属污染程度具有不确定性，因而要求评估模型能够反映这种性质。
It is not easy to discover whether the soil is polluted by the heavy metal. Different plants including indication plants and hyper - accumulating plants can show the effects of the pollution degree.
就土壤重金属污染不易被觉察问题，阐述了反映土壤重金属污染耐性的不同植物效应：指示植物和超累积植物。
It is not easy to discover whether the soil is polluted by the heavy metal. Different plants including indication plants and hyper - accumulating plants can show the effects of the pollution degree.
就土壤重金属污染不易被觉察问题，阐述了反映土壤重金属污染耐性的不同植物效应：指示植物和超累积植物。
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