Firstly, let's start with the causes of forest fires. Forest fires are usually caused by either human activities or natural factors. Human activities, such as destructive logging, burning of agricultural residues, and fire...
Natural causes like lightning can set fires on trees which may be spread by wind. Sometimes, High atmospheric temperatures and dryness (low humidity) offer favorable circumstances for a fire to start. Man-made causes are usually the ones that become dangerous. Fire is caused when a source of ...
根据第三段New fires have been starting very close to the former years' fires in recent years(近年来,新的火灾已经开始,非常接近前几年的火灾)可知,在Scholten看来,"僵尸火"比以前多了。故选C。 (3)D.细节理解题。根据最后一段It is believed that the "zombie fires" are even on the road of ...
to the decline in global forest area (Keenan et al., 2015; Brack, 2019). The impacts of abiotic factors – both natural and human initiated - onforest ecologyare quite well known. For instance, in some dry forested regions of the Western USA, both naturally and human ignited fires may ...
Scientists also say disease hot zones are expanding from Africa to South America,and that deforestation has already led to a rise in spreading disease.Zoologists have found that a third of all known disease outbreaks around the world were due to rapid land use change. Darah Lady's community ...
Forest-grassland mosaic ecosystems can exhibit alternative stables states, whereby under the same environmental conditions, the ecosystem could equally well reside either in one state or another, depending on the initial conditions. We develop a mathemat
In some forest types treespecies diversitytends to increase in older forests as shade-tolerant trees regenerate in the understory of established stands of pioneer species and grow into the canopy. While this tends to hold in more productive forest types, large or repeated fires, for example, can...
"It's a bad sign, but what really is going to count is what happens from now on," Philip Fearnside, an ecologist at Brazil's National Institute of Amazonian Research, said, according to Reuters. Fearnside said risingdeforestationis a concern. With deforestation, fires are usually set to cle...
which leads to more eggs, more young and more woodpeckers. Today, fire is used as a vital management tool for preserving both longleaf and its wildlife. Most of these fires are prescribed burns, deliberately set with a drip torch. Although the public often opposes any type of fire—and the...
Corresponding assessment method and formula for direct loss due to forest fire were given by consulting various kinds of classification methods and algorithms from domestic and abroad. Some factors related to indirect loss and ecological benefit loss were discussed. A set of relatively complete assessmen...