GEOGRAPHICAL RESEARCH ›› 2010, Vol. 29 ›› Issue (6): 980-988.doi: 10.11821/yj2010060003

• Geo-information Science • Previous Articles     Next Articles

Study of evaluation of forest and grass fire risk gradein Sichuan Province

YANG Cun-jian1, FENG Liang2, YANG Hong-zhong3, CHENG Xi1   

  1. 1. Research Center of Remote Sensing and GIS Applications, Key Lab of Land Resources Evaluation and Monitoring in Southwest, Ministry of Education, Sichuan Normal University, Chengdu 610068, China;
    2. Natural Forest Reservation Management Center of Sichuan Province, Chengdu 610081, China;
    3. Natural Forest Reservation Office of Tianquan County of Sichuan Province,Tianquan 625500,Sichuan China
  • Received:2009-08-12 Revised:2010-03-05 Online:2010-06-20 Published:2010-06-20

Abstract:

It is an important strategy to build Sichuan into the ecological shelter of the upper Yangtze River. As the forest and grass fire prevention is one of the important parts of the construction of ecological shelter and ecological security indemnity in Sichuan Province, the evaluation of the forest and grass fire risk is of great significance to the forest and grass fire prevention. Therefore, the forest and grass fire risk grade was evaluated by using remote sensing, GIS and Analytic Hierarchy Process (AHP) in Sichuan Province. The study shows: the fifth fire risk grade accounts for 0.8%, the fourth accounts for 20.2%, and the third grade, 47.2% in Sichuan Province. The highest fire risk is mainly distributed in Ganzi, Liangshan, Aba, Panzhihua and Ya'an, accounting for 49.2%, 24.7%, 15.7%, 3.5% and 3.4% respectively of the total area in the risk zone. The high fire risk is mainly distributed in the prefectures of Ganzi, Liangshan and Aba, which account for 72.1% of the total area in the risk region. We suggest that Ganzi, Liangshan, Aba, Panzhihua and Ya'an should be regarded as the key areas of the forest and grass fire prevention and should be given priority in getting labors, funds and goods for forest and grass fire prevention.

Key words: forest and grass fire risk, grade evaluation, index system, Analytic Hierarchy Process, Sichuan Province