Water body quality of Xi'an city circumvallated river was monitored and evaluated in summer and winter by saprobien system and biotic indexes of pollution, combined with water quality analysis.
结合水质分析及污染生物指数，采用污化系统法对酉安护城河河水在冬夏两季进行了监测研究。
Because of the effect of soil pollution, atmospheric environment pollution and self-metabolism, some harmful contents were also bioaccumulation in biotic fat during plant materials' growth.
因种植和生产过程、土壤、大气环境及自身代谢等因素影响，其不仅含有植物的主要功效成分，同时也有微量有害成分存在。
Because of the effect of soil pollution, atmospheric environment pollution and self-metabolism, some harmful contents were also bioaccumulation in biotic fat during plant materials' growth.
因种植和生产过程、土壤、大气环境及自身代谢等因素影响，其不仅含有植物的主要功效成分，同时也有微量有害成分存在。
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