An Analysis of Fire Danger Rating Assessment Method and Application
火险等级评估方法与应用分析

The resource of forest and grassland is abundant in China.Furthermore,forest and grassland are important to socio-economic development and environmental protection in China.But frequent fire occurrence in forest and grassland has become a great threat to economy and environment,especially in border area.Assessment study on fire danger rating is a meaningful way in forest and grassland management and can provide useful information to support fire management decisions.This paper firstly defined some concepts on fire danger,fire danger rating,fire danger index,and so on.Then the fire danger indicators were summarized and classified into fire categories.Their application in fire danger rating assessment was analyzed,too.The second key to fire danger rating assessment is how to construct the fire danger index algorithm.In the paper,we reviewed the evaluation methods in fire danger rating assessment study,including both qualitative and quantitative.And then,an application example on the fire danger rating assessment based on remote sensing was given.Four provinces in Northern China(Helongjiang,Jilin,Liaoning and Inner Mongolia) were selected as the study area.Five fire danger indicators retrieved from remotely-sensed data were integrated to calculate the fire danger index by the method of Analytical Hierarchy Process.According to the value of fire danger index,fire danger was classified into five ratings.Using the constituted criterion,fire danger rating distribution can be mapped and used to provide useful information for supporting fire management decisions in forest and grassland.