The situation of the rare tree species being threatened by the pollution substances is investigated. The endangered mechanism and its symptoms are analyzed. The protection measures are proposed.
对成都市的主要古树名木被环境污染物质危害的现状进行实地调查,从受害症状入手,对受害机理作分析,并提出保护古树名木的具体措施。
The situation of the rare tree species being threatened by the pollution substances is investigated. The endangered mechanism and its symptoms are analyzed. The protection measures are proposed.
对成都市的主要古树名木被环境污染物质危害的现状进行实地调查,从受害症状入手,对受害机理作分析,并提出保护古树名木的具体措施。
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