Since July 2019, wildfires have swept across California, USA 10.20,000 hectares of land,Causing an emergency evacuation of 200,000 residents。Starting from September 2019,As of January 20, 2020,Australian forest Bet365 lotto review burn area reaches 10 million hectares,Almost all forest scenic areas in southeastern Australia were destroyed。Conservatively estimated,At least 4.800 million animals died in Bet365 lotto review,The number of koalas may be reduced by half。How to understand this tragic incident?This is far from an administrative problem of poor firefighting,This is another example of how mankind has suffered a lesson in ignoring the laws of nature in the past 200 years。
The origin of the Bet365 lotto review: It is not just a man-made disaster
The 2019 fires in Australia were caused by arson,Nearly 200 people were arrested across Australia on suspicion of arson,But most of these are not organized or premeditated crimes。Many media blamed the government,Believe that the Bet365 lotto review was caused by insufficient Bet365 lotto review management: poor early warning ability,The Bet365 lotto review was not put out in time,And Prime Minister Morrison once went to Hawaii for vacation when the fires intensified,Only the firefighters are left trying their best。But,Australia is recognized as the country with the most advanced forest firefighting technology and equipment in the world,Not only has relatively rich experience in Bet365 lotto review fighting and emergency response,And sufficient funds、Improving regulations、Complete talents。Australian firefighters have a very high social status,For example, former Prime Minister Tony Abbott immediately joined the professional Bet365 lotto review brigade after leaving office,In this Bet365 lotto review,He led the team to the front line of Bet365 lotto review,Widely acclaimed。
Any kind of Bet365 lotto review,Except for Bet365 lotto review,The first requirement is combustibles,The second thing is to have combustion aids。Looking at this standard,Australia is simply a paradise of Bet365 lotto review。The overall latitude of the Australian continent is low,So the temperature is higher。There is no monsoon here,Light and unstable precipitation,80% of the earth’s surface has become dry desert。In Australia,The basic prerequisite for the survival of all plants is to tolerate weathered poor soil and erratic drought,As a result, the vegetation landscape here is either savanna or eucalyptus forest,They are all ideal natural firewood。For example,Eucalyptus overcomes the pressure of high evaporation with its slender leaves and rich oils,But the price is that it becomes flammable。Based on a comparative study of transplanted eucalyptus and oak forests in the United States,Same growth cycle、Same area of trees,The combustibles produced by eucalyptus are more than three times that of the latter。In Australia’s 40 million hectares of strict forest,70% of tree species are eucalyptus,And among the trees in Australia,Eucalyptus can account for more than 90%。Not only that,Australian summers are usually hot and dry,The hot wind blowing from the inland。In addition, the "El Niño-Southern Oscillation" phenomenon that has affected Australia's climate in recent years has become increasingly irregular,Extreme weather conditions continue to increase,Starting from late spring,The phenomenon of lightning strike Bet365 lotto review and spontaneous combustion of humus will increase。Obviously,Australia’s natural environment is inherently flammable。
Bet365 lotto review: a constructive element of Australian ecology
The question is how can a biological system that is so intolerant to Bet365 lotto review survive to this day?Different from most people’s imagination,In the long years,The most important wisdom accumulated by Australian native creatures is not to avoid or eliminate Bet365 lotto review,But adapt to Bet365 lotto review。The Aboriginal people who entered Australia about 50,000 years ago are no exception。
Australian native plants can withstand fires in various ways,Eucalyptus even used Bet365 lotto review to consolidate its dominance in the plant system。For example, some eucalyptus trees have thick bark,Exceptionally resistant to burning,Others will shed their bark quickly when caught on Bet365 lotto review,Thus protecting the backbone。What’s more, it requires flame grilling to make the fruit burst,Thus ejecting and spreading the seeds。In fact,Animals are also adapted to Bet365 lotto review,For example, although fires will kill many koalas and destroy their habitat,But because koalas have almost no natural enemies and competitors in the eucalyptus forest,Their populations can also recover with the revitalization of eucalyptus forests。Anyway,From a historical perspective,Although fires in Australia will wipe out many biological individuals,But it will not affect the stability of species communities in the long run。
Aborigines have been wandering around the Australian continent for many years,Have also witnessed and experienced countless fires,Not only accustomed to extensive use of Bet365 lotto review,And turn Bet365 lotto review into a tool of production。Indigenous people use Bet365 lotto review to create roads,Indicate direction,More use of Bet365 lotto review for so-called “waste burning agriculture”。Because most Australian indigenous communities have the characteristics of seasonal migration,As time goes by,Most of the forest and grassland ecology in Australia are accustomed to the disturbing factor of indigenous Bet365 lotto review。Objectively speaking,Indigenous arson activities regularly burn combustible materials in nature,Thus avoiding excessive accumulation of flammable materials,So once a natural Bet365 lotto review occurs,Their scale will also be suppressed。In a La Niña year with relatively abundant rainfall,Vegetation will grow wildly,Then once it becomes a withered grass and a dead tree,Repeated accumulation,Bet365 lotto review hazards have increased significantly,The natives who set Bet365 lotto review to it in time,It can be called nature’s health care provider。
Bet365 lotto review becomes "disaster":Reflections on modern environmental concepts
1827,Shepherds in Tasmania’s northern highlands recorded a strange phenomenon,Once the natives who set Bet365 lotto review are driven out,An ideal pasture will be filled with thorns and sour grass,Difficult to remove manually,As a result, the sheep farming industry here only lasted 18 years and was forced to give up。In the next 100 years,Most modern settlers in Australia marginalized Aboriginal environmental knowledge,Arson, including by indigenous people, is considered a crime that damages the environment and modern production。This way,The burning phenomena that exist in Australia’s original ecology have become “fires”。As the indigenous people’s practice of using Bet365 lotto review declines,On the one hand, natural combustibles cannot be cleaned up in time,Fires often get out of control;On the other hand, the firefighting concept that aims to eliminate all fires with scientific and technological tools has become popular。The result is that the Bet365 lotto review-fighting ability is one foot higher,The impact of Bet365 lotto review is so high: Australia has been the first in the world to use aircraft to survey fires since 1930,The variety of Bet365 lotto review-fighting equipment is amazing,And all citizens must receive professional firefighting skills training in middle schools,The result still failed to avoid the "Black Saturday" Bet365 lotto review in 2009 that killed 210 people。Ten years later,Under unexpected extreme weather conditions,An uncontrollable Bet365 lotto review once again。
In fact,At least after the bushfires in the capital Canberra in 2003,The Australian government and citizens have generally begun to reflect on the existing concepts of settlement and wildfire firefighting,Change the focus from Bet365 lotto review extinguishing to prevention and control,Learn to “adapt to Bet365 lotto review”。For example, trying to change the preference of modern Australian immigrants to disperse and settle in suburban wilderness,On the one hand, reduce frequent Bet365 lotto review use activities that do not exist in nature,On the other hand, it reduces the pressure of evacuation in the event of a Bet365 lotto review。In fact,Australia’s population distribution is scattered overall,But central cities represented by Sydney and Melbourne gather most of the population。These cities keep expanding,Most of them are adjacent to mountainous areas with dense eucalyptus forests,Once the Bet365 lotto review approaches,The consequences are disastrous。So,Change the planning ideas of settlements,Perhaps as important as improving Bet365 lotto review-fighting capabilities。Many Australians have also begun to discover and pass on the indigenous Bet365 lotto review-control experience,Some communities even specially invite indigenous residents who still know how to burn wasteland to help clear vegetation。
History is the most patient teacher,You can’t learn,It teaches over and over again。The major Bet365 lotto review in Australia remind mankind,Revere nature,Only to achieve long-term peace and stability。
(Author’s affiliation: Department of History, Sun Yat-sen University)