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北京的水文事业与防汛抗旱钟桂芳（北京市防汛办公室）水文事业与防汛抗旱密切相关。水文事业为防汛抗旱提供资料信息和决策依据；反之防汛抗旱又促使了水文事业的发展。１北京地区水文特性１．１降水的空间分布极不均匀北京面积仅１．６８万ｋｍ２，年平均降水量６００ｍ...
Hydrological cause in Beijing and flood control and drought relief Zhong Guifang (Beijing Flood Control Office) Hydrological cause is closely related to flood control and drought relief. Hydrological undertakings provide information and decision-making basis for flood control and drought relief; on the contrary flood control and drought aroused the development of hydrological undertakings. 1 Beijing hydrological characteristics 1.1 extremely uneven spatial distribution of precipitation Beijing area of only 16,800 km2, the average annual rainfall 600m ...