摘要
2 0世纪后 5 0年全国受旱面积和受旱成灾面积呈上升趋势 ,各年代旱灾成灾率也呈上升趋势 ;2 0 0 0年是建国以来旱灾最严重的一年 ,全国受旱面积和成灾面积分别达 40 5 4万hm2 和 2 6 78万hm2 。黄淮海地区和长江中下游地区受旱面积和成灾面积占全国的 6 0 %以上 ,是中国的干旱重灾区。总结了有关干旱发展预测的研究 ,对未来一段时期旱灾的可能发生情况进行了预测 ,并提出了有关旱灾防御的几点建议。
Based on the statistical data of drought in China in the last 5 decades (1950 - 2000), the characteristics of occurrence and development of drought were studied. The drought-occurred areas and drought-induced disaster areas had been increasing in the latter 50 years of 20th century. Ratio between drought-induced disaster areas and drought-occurred areas had an increased trend. The drought occurred in China in 2000 was the most serious one since 1949, while the drought-occurred areas and drought-induced disaster areas reached at 40.5 million haand 26.8 million ha respectively. More than 60% of the drought-occurred areas and drought-induced disaster areas occurred in the Huang-Huai-Hai Region and the Middle and Lower Reaches of Yangtze River, which were the two most drought-induced disaster regions in China. According to the research results on drought prediction, the possibilities of drought occurrence in the future were analyzed and some precautions against drought were recommended.
出处
《中国农业气象》
CSCD
2003年第1期7-10,共4页
Chinese Journal of Agrometeorology
基金
国家高技术研究发展计划 (86 3)生物技术与农业节水专项 (2 0 0 2AA2Z4171- 3)
关键词
灾情分析
中国
旱灾
灾情变化
预测
防御对策
China
Drought
Drought development
Prediction on disaster tendency
Precaution against drought
