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。

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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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