Scientists say both studies demonstrate that certain parts of the ecosystem respond rapidly to reductions in atmospheric pollution, but that these findings should not be used as a license to pollute.
Taking Fen river as a case study, a management information system is set to implement pollution gross control and license management.
以汾河治理为例，建立一个河流水污染物总量控制与排污许可证管理的信息系统。
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When a red-alert for air pollution goes into effect, the emergency plan will only allow drivers to use their vehicles every other day on an odd-even license plate system.