关键词: 灾害活动域, 灾害规模重心, 灾害损失中心, 灾害频发地带

Abstract: The spactial characteristics of nature disasters in China have been discussed in this paper. The spatial characterstics were discribe as follows:1. Disasters action (DA) in China can be divided into 4 DA territories: North DA territory,South DA territory, West DA territory and the Sensitive-zones DA territory. They are shown in Fig. 1. each territory is characterized by the most frequent disasters in Tab. 1. DA region is the second level classified area, 14 DA regions can be found in China which are shown in Fig. 1. China’s disaster distribuion is controlled by a quasi-Qinlin-Huaihe line (at about 34°N) .2. The Huang-Huai-Hai area is an area with huge amount of per unit area economic loss caused by a disaster, which was called as a disaster loss center. the area between Zhengzhou and WuhanDongting Lake is a large disaster action center in China, which was called as a disaster scale weight.In the border zone of Yunnan-Shichang-Guizhou-Guangxi, a hazard may result in a larger number of injuries and deathes.3. The most ferquent zones of disaster action in China are North-China, which are affected by drought and flood, and along Hu-Line zone. Which are affected by drought or arid, landslide and earthquake.In this paper, we used following data: agricultural harversts recordes in the period of 137 BC-1990 AD, and natural disasters during 1990-1991 AD.

Key words: DA territory, disaster scale weighty center, disaster loss center, disaster ferguent Zone