我国水资源的空间分布也不均匀，南方会出现洪涝灾害，北方缺干旱缺水。
The distribution of water resources is also not balancing, the south faces floods, while the north is drought.
通过对洪涝灾害在时间上和空间上的分析，揭示了洪涝灾在历史上的时空分布规律。
Through the analysis in space time, it reveals the law of spatial and temporal distributing in the past time.
指标能较好地揭示烟台市的旱涝灾害时间分布特征。
The modified Z-index is a better approach to reflect the temporal distribution of drought-flood in Yantai.
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