[Explanation] The reporter learned from the Forest Fire Joint Defense Headquarters in Jingjiu Township, Xichang City, Liangshan Prefecture, Sichuan Province, that as of 12:01 on the day, all the fires had been extinguished. Resurgence phase.
[Explanation] The forest fire occurred on the afternoon of March 30 and has lasted for three days. The fire is adjacent to Xichang City, the capital of Liangshan Prefecture, and is located in a famous local scenic spot. The fire line has repeatedly approached ancient buildings, cultural relics protection units, residential areas, schools, gas stations, gas storage stations, etc., so it has attracted much attention. At present, 19 people involved in fire fighting have been killed by the fire, and more than 24,000 people have been evacuated.
[Commentary] Why are there so many forest fires in Liangshan Prefecture and easy to reignite? Liu Bo, deputy chief engineer of the Sichuan Forestry and Grassland Survey and Planning Institute, said that the main tree species in Liangshan is Yunnan pine, which has a high content of turpentine and a low ignition point, especially in the recent dry weather. It may burn on Mars.
[Contemporary Period] (Liu Bo, Deputy Chief Engineer of Sichuan Forestry and Grassland Survey and Planning Institute) From the words of itself, the three elements of combustion are the temperature, the load of combustible materials, and the other is the source of fire. The first reason why this time a fire broke out here is the dryness of the sky and the large load of combustibles. In addition to its terrain, in addition to the relatively gentle valley of the Anning River, many other places belong to the Alpine Canyon Area. Therefore, the difficulty for people to reach is quite high, so it is difficult to make fire.
[Explanation] During the three days of the fire scene, the reporter noticed that the fire was often rare during the day, but the fire re-ignited or worsened at night. In response, Liu Bo explained that this phenomenon is related to the local dry plateau climate.
[Same period] (Liu Bo, deputy chief engineer of Sichuan Forestry and Grassland Survey and Planning Institute) In the morning, it was about eleven o'clock, and even at ten o'clock, it started to blow until late at night. This is due to its own location. Geographically determined. Another is the possibility of sudden changes in airflow due to the influence of the temperature of the fire field.
[Explanation] According to the forecast of the meteorological department, from April 2nd to April 6th, 2020, most areas of Liangshan Prefecture are mainly cloudy and sunny, with less effective rainfall and strong wind. The Emergency Management Department released the news on April 1st. It is expected that from April 2nd to 6th, the forest fire danger level in some areas of southern Sichuan will reach the extreme danger level, and the fire prevention situation is still severe.
[Contemporary Period] (Liu Bo, Deputy Chief Engineer, Sichuan Forestry and Grassland Survey and Planning Institute) Resurgence exists. In the range of Sheshan Forest Park, especially the forest on the side of Guangfu Temple is dense, this has not suffered before. Over (large) fires, so its litter, said to have a large load of combustibles. There is still a lot of dead wood in the forest. Although it is dead, its underground roots are still there, or tree stumps will cause smoldering. Relying on forest and grass personnel, natural resources departments, or emergency management departments is not enough. It requires the participation of all people in the society. This is the ultimate solution.
Reported by Chen Xuanbin, Wang Peng, Liu Zhongjun, Xichang, Sichuan
Editor-in-chief: [Luo Pan]