Forests fires can also be caused nature.
森林火灾也能由自然引起。
Fires in California continue to burn out of control, and several small towns in the forests near San Francisco are still in danger.
加州大火火势继续失控，旧金山附近的森林中的几个小镇仍处于危险之中。
The topics discussed included the co-ordinated study of the destruction of forests, as well as how to combat forest fires and the extension of European research programs on the forest ecosystem.
讨论的主题包括对森林破坏的协同研究，如何扑灭森林火灾，以及关于森林生态系统的欧洲研究项目的扩展。
Also, without fires from time to time, forests become overcrowded and unhealthy.
此外，如果没有不时的火灾，森林会变得拥挤和不健康。
The koalas' living environment is getting worse now because the fires from September 2019 to January 2020 in Australia have burned about 30% of the forests where they live.
2019年9月至2020年1月，澳大利亚发生火灾，烧毁了大约30%的考拉所生活的森林，考拉的生活环境现在变得越来越糟。
Fires set to clear land for plantations spread into forests.
用来烧荒开辟农场的大火，蔓延入森林。
That may already be happening in Canada, where recent warm winters have unleashed a plague of bark beetles, and in Australia, whose forests have been devastated by drought and forest fires.
在加拿大和澳大利亚全球变暖的危害或许已经显现：一连几个暖冬造成了加拿大树皮甲虫成灾，旱灾和大火也使澳大利亚的森林屡遭破坏。
The fires burned houses to cinders in minutes, caused vehicles to melt and turned forests into blackened wastelands.
大火在几分钟之内就把房屋烧成炭灰，把汽车融成铁水，把森林变成焦黑的荒地。
Farmers at Larsha have taken steps to protect against fires that break out in forests and peat bogs every year in Nizhny Novgorod.
拉尔沙农场的农民每年都采取步骤，防止下诺夫哥罗德的森林和泥炭沼爆发火灾。
American forests are being devastated by foreign pests—and forests full of dead trees are prone to catastrophic fires. A fire in Washington State, above.
美洲的森林被外来害虫毁坏---满是死树的森林容易招致惨重的大火。
Burning in dry peat bogs and forests, the fires produced a dense plume of smoke that reached across hundreds of kilometers.
大火席卷了很多泥炭和森林地区，由大火产生的滚滚浓烟也蔓延到了数千公里之外。
"Forest landscapes in Amazonia are becoming more fragmented and, therefore, a growing proportion of forests is exposed to the leakage of accidental fires from adjacent farms," they suggested.
亚马逊的森林地貌越来越支离破碎，因此越来越多的地块面临邻近农场意外跑荒的威胁。
Fires of natural origin have historically been extremely common throughout the temperate forests.
在温带森林中，天然发生的火灾一向是非常普遍的。
About one million hectares of Indonesia's national forests have been destroyed by fires that burned for several months from September 1997.
从1997年9月开始的森林大火持续了数月，吞噬了一百万公顷的印度尼西亚国家森林资源。
In sunbaked southern Italy, fires raged as parched forests and fields turned to tinder.
太阳炙烤下的意大利南部，大火蔓延，被晒干了的树林和田地都成了。
In a study of fires in the forests of Sumatra and Borneo in Indonesia, investigators analysed 50 years of visibility records from local airports.
在一项针对苏门答腊和婆罗洲林火的研究中，调查人员分析了当地机场50年的可见记录。
In a study of fires in the forests of Sumatra and Borneo in Indonesia, investigators analysed 50 years of visibility records from local airports.
在一项针对苏门答腊和婆罗洲林火的研究中，调查人员分析了当地机场50年的可见记录。
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