2. On February 0, 2009, at 1 16, a forest fire caused by villagers burning a ridge in Orfila Formation, Xinsha Village, jinjing town, Changsha County, Hunan Province was extinguished by more than 500 local cadres and masses. By 5: 00 on February 12, the fire was completely controlled, and the fire area was about 12 hectares. Tang Yang, deputy director of the Comprehensive Management Office of jinjing town Municipal Government, was surrounded by a fire while organizing other people to evacuate, and unfortunately died in the line of duty.
3. On February 2, 2009, around 1 1, a forest fire broke out in Qianshan Forest Farm in Xianning, Hubei. By 1: 30, the area of fire has exceeded 500 mu. The fire was put out in time by the staff of public security, fire protection, forestry and electric power and hundreds of villagers nearby, causing no casualties.
. According to the police, the fire was caused by a villager cutting down roadside weeds at the foot of the mountain and burning them. The villager has been detained by the police, and the total fire area of Qianshan Forest Farm is still under investigation.
4. On February 2, 2009, at around 0/4, forest fires broke out in Baila Township, Chishui Town, Houshan Town, Guanxing Township, Macheng Township, Shuiliao Township, Deyao Town, Masi Township and Jianzhu Township in Gulin County, Sichuan Province. 13 At about 4: 30 on June 38, the fire was completely extinguished, and there were no casualties among people and firefighters near the fire.
Luzhou City Emergency Office said that the fire area in xuyong county 1 150 mu, and the fire area in Gulin County is still being verified. Preliminary analysis shows that forest fires are caused by farmers using fire in the field. Two suspects who produced kindling (burning plant ash as agricultural fertilizer) in xuyong county have been controlled by public security organs. The local government is organizing to clean up the open fire to prevent the resurgence. The area and cause of the fire are under further investigation.
5. On February 12, 2009, at about 4 pm, forest fires broke out in Pengjiazhai Village of Haizijie Town and Fujiagou Village of Tietai Town, Bijie City, Guizhou Province, causing 2 deaths and 2 injuries to local villagers. As of 23: 20 on 12, the forest fire in Pengjiazhai village has been put out, and local fire officers and soldiers are still fighting the forest fire in Fujiagou village urgently.
6. On the afternoon of February 12, 2009, a forest fire broke out in more than a dozen towns in five counties of Zhaotong City, Yunnan Province. Because the local wind is very strong, reaching level 7, and the mountain is high and steep, rescuers can't get close, and the fire is difficult to control. In addition, the traffic and communication in the forest area or local area where the fire broke out are extremely inconvenient, and even roads or communication blind areas are inaccessible, making it extremely difficult to put out the fire.
Immediately after the fire broke out, the local emergency plan was launched, and more than 300 people were organized to go to Luokan Township, 1000 people went to Xiaocaoba Forest Farm to put out the fire. From 65438 to 9: 30 on June 3, forest fires in Xiaocaoba Township of Yiliang County and Luokan Township of Zhenxiong County have been basically extinguished. At 9: 50, local firefighters were cleaning up the fire until it was confirmed that the fire was completely extinguished.
Du Yongsheng, deputy director of the Office of the National Forest Fire Prevention Command and director of the Forest Public Security Bureau of the State Forestry Administration, recently said that in the spring of 2009, due to the continuous drought in some places and the freezing rain and snow disasters in the south, the forest fire risk level in most parts of China continued to rise, and some areas experienced the highest forest fire risk in history, which already had the material and meteorological conditions for a major forest fire, and the fire prevention situation was extremely severe.
Expand the information about forest fire types;
Generally divided into surface fire, crown fire and underground fire.
1. Surface fire: Fire spreads along the surface of forest land, burning ground cover, hurting young trees, shrubs and undergrowth plants, burning the base of trunk and exposed roots, etc. Generally, the temperature is around 400℃, and the smoke is light gray, accounting for about 94% of forest fires.
According to its spreading speed and harmful nature, it can be divided into two categories: rapid surface fire spreads quickly, usually reaching hundreds to thousands of meters per hour, and burns unevenly, often leaving unburned plots with less harm, and the over-fire area is rectangular or triangular; The fire that enters the surface steadily spreads slowly, generally only tens of meters per hour, which burns all the ground cover and the lower branches of trees and shrubs. Long burning time, high temperature and serious harm. The fire path is oval.
2. Crown fire: The fire spreads along the crown, mainly the surface fire under the strong wind. It is destructive and can burn needles, branches and ground coverings. The general temperature is 900℃, and the smoke column can be as high as several kilometers. Fei Huo often occurs, and the smoke is dark gray, which is difficult to put out, accounting for about 5% of forest fires, mostly occurring in coniferous forests that have been dry for a long time, and rarely occurring in broad-leaved forests.
According to its spread speed and harm degree, it can be divided into two categories. Rushing into the crown fire, also known as raging fire, spreads quickly, and the flame jumps forward with a downwind speed of 8 ~ 25 kilometers per hour. The crown fire often leaves the surface fire far behind, forming two fire spots with rectangular fire tracks.
The crown-stabilizing fire, also known as full-burning fire, spreads slowly with a downwind speed of 5-8 kilometers per hour. Crown fire and surface fire go hand in hand, and most of the combustible materials in the forest are burned, which is the most serious forest fire. The burn area is oval.
3. Underground fire: also known as peat fire or humus fire. Fire burns in the humus layer or peat layer of forest land, but there is no flame on the surface, only smoke, which spreads slowly, only 4 ~ 5 meters per hour, lasts for a long time, and can last for days, months or longer, and can burn all the way to the mineral layer or groundwater layer.
It is destructive, can burn all the peat, humus and roots in the soil, and is not easy to extinguish. After the fire, the woodland often turns to pieces. It accounts for about 1% of forest fires. The fire burns in a ring. Most of them occur in particularly dry coniferous forests.
95% of the world's forest fires are moderate and weak, which are easy to control and put out, and about 5% of forest fires and extra-large fires are difficult to control and put out, which is an important issue to be solved urgently in forest management all over the world.
Trunk fire: linear regression analysis of trunk blackening height and converted fire intensity and pest number was carried out respectively. The results show that the linear relationship between them and the number of pests is more significant, and the linear relationship between fire intensity and the number of pests is more significant.
Baidu encyclopedia-forest fire