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1 旱灾及其特点1.1 历史上的旱灾鹤壁市属于重旱区,历史上十年九旱,据历史资料记载,1450～1949年间的500年中共发生旱灾264年,占52.8%,其中发生较大、特大旱灾52年,占10.4%,发生特大旱灾4年,占0.8%。历史上由于水利条件极差,每遇大旱,往往造成五谷颗粒不收,饥荒遍野,草根树皮食之贻尽,民不聊生的惨状。从1950～1999年的49年间,本地区几乎每年都有不同地方、不同程度的旱灾发生,即使是大水年,也有先旱后涝,涝后又旱的现象发生。1950年以来,该市发生了二十几年的大旱、特大干旱,往往受灾面积达50%左右,成灾达35%左右。尽管水利条件较好,但旱情严重,干旱造成大面积农作物减产,大部分山丘
1 Drought and Its Characteristics 1.1 Historical Drought Hebi City belongs to arid arid zone and has a history of ten years of drought. According to historical records, a total of 52.8% of the total drought occurred in China in the 500 years between 1450 and 1949, accounting for 52.8% In the 52 years since the special drought, accounting for 10.4% of the total, with a severe drought lasting 4 years or 0.8%. Historically due to poor water conditions, each encounter a drought, often resulting in grain particles do not accept, famine, grass bark edible Yi, people live in tragedies. During the 49 years from 1950 to 1999, different parts of the country were exposed to varying degrees of drought. Even in the flood season, drought and flood were recorded first, and then the drought and waterlogging occurred after the flood. Since 1950, there have been more than two decades of severe drought and severe drought in the city. The affected area is often affected by about 50% of the affected area and about 35% of the disaster-hit areas. Despite good water conditions, the drought was severe and the drought caused a large-scale reduction of crops. Most of the hills