Why do forest fires happen frequently in Australia? | Australia

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Why do forest fires happen frequently in Australia?

Published 23 January 2014, 14:56 AEST

山林大火频发一直澳大利亚的自然灾害。那么究竟是哪些原因促成了这些山火呢?广为人知的五大原因包括了高温、低湿和风大的气候条件、闪电频现的自然现象,险峻而起伏的地形、人类活动和人为纵火以及澳大利亚独特的situation.

By Dave McKenzie, October 22, 2013 (source: ABC Bushfires group flickr) Wildfires raging (Source: ABC) 

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澳大利亚有灾难性、极端、严重、十分高险情、高险情、中等险情和低险情等六级火灾危险。火灾级别通常是由消防部门根据澳大利亚气象局的信息决定,然后通过媒体向公众广而。作为公共广播机构的澳大利亚广播公司(ABC)在将紧急资讯告知公众方面,扮演着至关重要的角色。每年的火灾危险季节由当地的消防部门依据地理位置、降雨量等诸多因素决定。在火灾危险季节,不经允许是不可以在户外燃火的。

虽然人们对是否气候变化与山火有关的说法仍有争论,但是,有五个广为人知的因素被认为是导致澳大利亚山火频发的主要原因:气候、自然现象、险峻的地形、人类活动和.

1. Australian climateImage Title炎热、大风、干燥…火灾带来的灾难日 (涞源: ABC Open)首先,澳大利亚的气候是导致山火严重和破坏程度的影响因素。造成山火的不利条件包括高温、低湿度、风速大和干燥的。2. 自然现象Image TitleLightning storm heads south of Orange town, NSW by Luke Wong (Source: ABC)

Second, the cause of natural phenomena. A quarter of wildfires in Australia are caused by lightning, which is more than the other single cause of wildfires. This unpredictable natural phenomenon makes it difficult for relevant departments to prepare and respond.

3. Human activitiesImage TitleWildfires threaten towns (Source: ABC Open)

第三,人为纵火和人类活动也是山火频发的主要影响因素。通常情况下,消防部门会在极端酷热天气情况下实施全面禁火令,这就意味着包括户外烧烤、野营和 使用气炉等与明火相关的行为都会被严格禁止。但是,山火有时还是会因使用、汽车和吸烟而偶然.

4. The terrain is steepImage TitleSai Dingquan台 (涞源: ABC)澳大利亚起伏和险峻的地形是山火频发的第四个原 因。许多山火都在峰峦起伏的险峻地形中,这使得消防人员进入火灾现场并有效控制火情变得十分困难,山火因而得以迅速蔓延。5. Image TitleForest fires in Australia (Laiyuan: ABC)

第五是。桉树在澳大利亚 中占据主导。桉树中自然产生的桉树油和树叶是火灾的助燃剂,使火灾迅速蔓延并长时间燃烧。

 

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