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从 1999年以来朝阳气候持续异常、连续 4a遭受严重旱灾的实际出发 ,以 2 0 0 2年为例 ,分析了朝阳地区干旱的成因和特点 ,借以为决策服务提供科学依据
Starting from the fact that the climate in Chaoyang continued to be anomalous since 1999 and the severe drought was one of the four consecutive years, taking 2002 as an example, the causes and characteristics of drought in Chaoyang were analyzed in order to provide a scientific basis for decision-making services