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- biodiversity (1)
- biodiversity conservation (1)
- climatic factors (1)
- economic aspects (1)
- effect of air pollution on (1)
- environmental degradation (1)
- environmental economics (1)
- environmental monitoring (1)
- global environmental change (1)
- monitoring (1)
- sustainable development (1)
- 发展经济学 (1)
- 水环境 (1)
- 生态平衡 (1)
- 研究 (1)
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