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| ANALYSIS OF CHANGING FLOOD CHARACTERISTICS IN SOUTH CHINA DURING THE RECENT 50 YEARS | |
| 作者姓名： | 王志伟 唐红玉 张洪涛 |
| 作者单位： | Shanxi Satellite Remote-Sensing Center for Reducing Disasters，Qinghai Meteorological Observatory，Shanxi Meteorological Administration Taiyuan 030002 China，Xining 810001 China，Taiyuan 030002China |
| 基金项目： | Project “Statistics of drought in China since 1950 and analysis of its characteristics”(SZ2003C-04) |
| 摘 要： | 1 INTRODUCTION The trend of drought and flood variation has been a wide concern among scientists in the background of climate warming in the late 20th century1]. Both of them are serious natural disasters that regularly take place in China. Relevant studies have shown that there are roughly the same number of stations in China showing increasing rainfall as those showing decreasing rainfall over the past 50 years. There are no obvious trends of variation of annual precipitation averaged… |
| 关 键 词： | 中国 南方地区 洪水 降雨量 气候变化 |
ANALYSIS OF CHANGING FLOOD CHARACTERISTICS IN SOUTH CHINA DURING THE RECENT 50 YEARS |
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| WANG Zhi-wei,TANG Hong-yu and ZHANG Hong-tao.ANALYSIS OF CHANGING FLOOD CHARACTERISTICS IN SOUTH CHINA DURING THE RECENT 50 YEARS[J].Journal of Tropical Meteorology,2005,11(2):206-212. | |
| Authors: | WANG Zhi-wei TANG Hong-yu and ZHANG Hong-tao |
| Institution: | 1. Shanxi Satellite Remote-Sensing Center for Reducing Disasters, Taiyuan 030002 China 2. Qinghai Meteorological Observatory, Xining 810001 China 3. Shanxi Meteorological Administration, Taiyuan 030002 China |
| Abstract: | Based on China's monthly precipitation data from 1950 to 2000 and by using the Z-index, 4 categories of flood were estimated. Variation and change of flood in South China were analyzed in terms of percentage areas of flood. This study reveals that flood areas in South China had a slightly decreasing trend in the latest 50 years. During the winter half year, however, it displayed an increasing trend, especially since the 1990's.It is also found that flood areas decreased during the summer half year from April to September, but increased during summer, especially since the 1990's. In the annually first season of precipitation, the flood area has a decreasing trend, but it has a strongly increasing trend in the annually second season. The gradual wet trend during the winter-half year results in wetter climate condition for South China, which will be more favorable for spreading some of the epidemic pathogenic bacterium, crop diseases and insect pests. |
| Keywords: | South China flood area variation |
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