population, cultivated land, stock capacity and GDP for per unit land area are determined as the main factors to calculate the wind disaster bearing object C H, and the average gale disaster weather days per year as the wind disaster amount index Z C.

Apart from the two main natural disasters-flood and drought,there are other disasters like pest plague,wind disaster,hail disaster,freezing,earthquake and epidemic disease in ancient hunan.

Based on the survey on wind disasters in Hubei Province from 1965 to 2005,through analyzing some indexes,such as the frequency of wind disaster in each area and the loss of people and property,impact assessments on wind disaster for various areas are made.

Therefore it is of great significance to analyse wind damage of envelopes of lightweight steel s.

Considerations on adjusting fire risk problem with economic strategy;

Evaluation on the fire risk in the urban car parks;

The current status and applying of city fire risk assessment technology in foreign country;

Preliminary estimation of risk distribution of typhoon disaster in Fujian;

Reasoning of typhoon disasters in Xiamen City and countermeasure study;

Spatial-temporal pattern of typhoon disaster in Fujian,2005,and risk assessment;

Flood risk assessment is the first step in the flood risk management.

Secondly,discount rate was applied to the quantitative format of flood risk.

Study on the Diversification Methods of Catastrophe Risk;

Now the theory about catastrophe risk is an important problem not only in theory circles but also in insurance routines.

This paper analyzes some aspects of economics about catastrophe risk transfer and its insurability,and finds that information asymmetry is the key factor affecting catastrophe insurance.