Biological Disaster

BIOLOGICAL DISASTER



FOREST FIRE



MEANS A forest fire means a fire that burns natural fuel in forests or grasslands FOREST FIRE VISIT

PROCESS FOREST FIRE

THREE COMPONENTS : heat oxygen gas fuel

bear was burned

TYPES HUGE POWER FOREST FIRE

Ground Fire

Ground Fire Underground fires are fires that burn fuel materials in the soil and underground . GROUND FIRE

Ground Fire Fires burn organic matter beneath the surface of the forest floor. Occurs in certain types of forests Especially forests in temperate regions with very high elevations, no flames and less smoke. It is the hardest to detect and has the slowest spread rate. But it is the fire that causes the most damage to forest areas.

TRUE Ground Fire GROUND FIRE Fires burning organic matter are actually beneath the forest floor. Therefore, standing on the forest floor, the fire could not be detected. special tools required SEMI GROUND FIRE That is, it burns horizontally along the forest floor like a surface fire. At the same time, another part burns vertically deep in the organic matter beneath the forest floor. which could burn several feet deep

Surface​Fire

Surface​ Fire A burning fire spreads to the SURFACE​FIRE surface of the ground. By burning fuels on the forest floor, which are Which resulted in a decrease in leaves, dry branches that the growth rate of the trees The accumulate on the forest floor, quality of the wood has grass, small trees, lower wood, decreased. stained wood And bamboo thickets, shrubs make the tree so weak that This type of fire is the most disease and insects can easily common and common in almost harm the tree. every region of the world. The severity of the fire depends on the type and type of fuel. This type of fire is generally not fatal to large trees. But it will cause burns.

Crown Fire

Crown Fire A burning fire spreads from the top of one tree or shrub to the top of another. Most of them occur in pine forests in temperate regions. This type of fire has a very fast spread rate. And it is extremely dangerous for forest firefighters. This is because the fire is very intense and the flame height is about 10 - 30 meters.

RUNNING CROWN FIRE RUNNING CROWN FIRE Born in a forest with flammable trees and dense canopy. such as in a temperate pine forest The spread is rapid and violent from one canopy directly to the neighboring canopy. therefore continually spreading along the canopy

DEPENDENT CROWN FIRE Canopy fires rely on fire spreading along the ground to carry the flame up to the canopies of other nearby trees. This type of fire usually occurs in forests where trees are not dense. The tree canopy is therefore far apart. But on the forest floor there is a dense and continuous supply of fuel.

Causes of severe forest fires 1.causes such as lightning, tree branches rubbing against each other from the wind , volcanic eruptions , elements and the reaction in the swamp forest soil . 2.The most common human cause is forest fires to collect forest products .



THE WORLD\"S FOREST FIRE WILDFIRE RISK AREA risk area THE WORLD'S WILDFIRE RISK AREAS ARE RELATED WILDFIRE TO IMPORTANT FOREST TYPES . THE MAJOR FIRE - PRONE AREAS OF THE WORLD ARE THE SAVANNAS AND PEATLANDS OF AFRICA . SOUTH AMERICA AND SOUTHEAST ASIA THE WORLD\"S

EFFECTS OF WILDFIRES DECREASED FOREST AREA CAUSE AIR POLLUTION GAS A LEACHING OF SOIL EROSION OCCURS CAUSING CO₂ THAT CAUSES GREENHOUSE GASES

Ground Fire Surface​Fire Crown Fire

BORN FROM NATURE

BORN FROM HUMAN

Australia kangaroo FOREST FIRE

Kangaroo caught in bushfires in Australia

FOREST FIRE FOREST FIRE FOREST FIRE



member 1.นางสาวผ่องมณี บุบผาชื่น ชั้น ม.5.9 เลขที่ 2 2.นางสาวพรชนก ศรีโอสถ ชั้น ม.5.9 เลขที่ 5 3.นางสาวเบญญาภา น้อยบัว ชั้น ม.5.9 เลขที่ 11 4.นางสาวสวรรยา จูขวัญ ชั้น ม.5.9 เลขที่ 38 5.นายพลภัทร ห่ามกระโทก ชั้น ม.5.9 เลขที่ 41 6.นายพัชรพล ศรีสวัสดิ์ ชั้น ม.5.9 เลขที่ 42