flood risk zonation assisted 洪灾风险区划
Flood risk zonation should utilize different indexes and factors and adopt different zonation methods according to different region and different environment.
洪灾风险区划，应该针对不同的区域、不同的环境，选用不同的要素和指标，采用不同的区划方法。
This paper single out two places of Beijiang River drainage basin? Binjiang River small drainage basin and Pajiang River natural detention basin in Guangdong province to study flood risk zonation.
本文选择了广东省北江流域的两处区域——滨江小流域和潖江天然蓄滞洪区，进行洪灾风险区划的研究。
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