Study on Grassland Fire Risk Dynamic Distribution Characteristic and Management Policy

Grassland fire is one of the main disasters in grassland.Using corresponding data of grassland fire form 1991 to 2005 and statistical method,the spatial and temporal distributing characteristics of grassland fire risk were studied.It was found that grassland fire risk is rising following economic development.The losses caused by grassland fire are also rising.The grassland fire occurred in high frequency in April and October.Inter Mongolia,Xinjiang and Gansu were badly influenced by grassland fire on economy.At last, the management policy for reducing grassland fire was put forward.