摘要
According to the hail damage database of China, both the damage affected area and seriously affected area show a descending trend, while the ratio of the latter to the former ascends on the contrary. The seasonal variation of hail damage is quite obvious, spring and summer are the main periods of time of hail shooting throughout the whole country, and the frequency of hail shooting during April～September accounts for 92.3% of whole year. The distribution zone of hail shooting and seriously hail damage-affected area have an evident difference, and the center of hail damage is located in the Huang-Huai-Hai Plain and hilly regions on the south of the Yangtze River. Based on the map of county-level seasonal hail damage and the map of agriculture comprehensive regional planning, this paper designs the seasonal regionalization of hail damage by the methods of “from top to bottom” and “from bottom to top”, and China is divided into 5 types of hail damage zones with 16 second regions and 28 thrid regions. The 5 types are: summer type (I); later-spring/early-summer and summer type (II); later-spring and early-summer and double peak type (III); spring type (IV); summer and double peak type (V).
According to the hail damage database of China, both the damage affected area and seriously affected area show a descending trend, while the ratio of the latter to the former ascends on the contrary. The seasonal variation of hail damage is quite obvious, spring and summer are the main periods of time of hail shooting throughout the whole country, and the frequency of hail shooting during April～September accounts for 92.3% of whole year. The distribution zone of hail shooting and seriously hail damage-affected area have an evident difference, and the center of hail damage is located in the Huang-Huai-Hai Plain and hilly regions on the south of the Yangtze River. Based on the map of county-level seasonal hail damage and the map of agriculture comprehensive regional planning, this paper designs the seasonal regionalization of hail damage by the methods of “from top to bottom” and “from bottom to top”, and China is divided into 5 types of hail damage zones with 16 second regions and 28 thrid regions. The 5 types are: summer type (I); later-spring/early-summer and summer type (II); later-spring and early-summer and double peak type (III); spring type (IV); summer and double peak type (V).
作者
Wang Ying1, Wang Jingai2, Wu Wenbin3 and Li Wenhang2 (1. Institute of Resource Sciences, Beijing Normal University, Key Laboratory of Environment Change and Natural Disaster,Ministry of Education of China, Beijing 100875
2.Department of Resources and Environmental Sciences, Beijing Normal University, Beijing 100875, China
3.Institute of Natural Resources and Regional Planning, Chinese Academy of Agriculture Sciences, Beijing 100087, China)
