Finally, this system is proposed using decision tree to resolve the relevant theories of ecological environment security alarm in the scenic spot.
最后，本系统还提出了利用决策树的相关理论来解决景区中生态环境安全报警问题。
Pesticide has made a great contribution on controlling plant diseases and insect pests, however it also contaminated ecological environment and threatened the security of birds.
农药曾经为人类控制生物病虫害作出过巨大贡献，但是农药污染也破坏了生态环境，对野生鸟类的生存造成了严重威胁。
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