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。
应用推荐