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。
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