Author: Wen/Yu Zi Period
You should remember that in the Australian New Year's Eve wildfire, there is a problem of trees to promote the fire, that is, "eucalyptus", this tree originated in Australia, but since the 19th century, this tree has been introduced to all parts of the world, becoming out of control, because this tree grows very fast, but it will also have great destructive power. According to public statistics, eucalyptus trees have spread to 96 countries or regions around the world (2012 statistics).
From this situation, it can also be seen that the adaptability of eucalyptus trees is very strong, but after eucalyptus trees are planted, many people have also installed a lot of "nicknames" for it, such as: environmental killers, subjugated trees, broken children and grandchildren trees, and even the title of trees without virtue.
<h1 class="pgc-h-arrow-right" > Why are eucalyptus trees called trees of subjugation, trees of broken children and grandchildren, and trees of lack of virtue? </h1>
From the introduction of this tree, we can see that there must be a distribution in China, of which There is a certain number of distributions in Fujian, Guangxi, Guangdong, Yunnan and Sichuan. It can only survive in the tropics, but also in the temperate zone, and can also resist drought, cold, water and other functions, that is to say, in this extreme environment, can be completely survived, because it grows very fast, so it is also a rare tree in the world, a hundred meters high tree. But soon human beings found that the eucalyptus tree situation was not right, and the nicknames of the dead country tree, the broken child tree, and the lack of virtue tree slowly came out, mainly because it was too destructive.
In Huidong County, Guangdong Province, among the proposals to ban eucalyptus trees, someone explained that those who plant eucalyptus trees in Huidong should "leave some food for future generations to eat", and planting eucalyptus trees is planting "trees without virtue". At the same time, some people in the back also say that eucalyptus trees are trees that destroy the country and cut off their children, and the harm of eucalyptus trees is indeed very large.
Eucalyptus is known as the "fertilizer pumping machine", through real practice to prove that as long as the eucalyptus tree has been planted in the area, the fertility of the soil is extremely low, or even completely depleted, eucalyptus trees can strongly absorb nutrients in the soil, and will also implicate the surrounding plants, soon the surrounding plants will appear without impact and can not survive, so it will directly lead to the collapse of the ecological chain in this area.
Without the survival of other plants, the protection of the soil is lost, so landslides and floods increase.
At the same time, there is also a problem, that is, the chemical products applied by eucalyptus are toxic and long-lasting, and eucalyptus gas has a stimulating and toxic effect, so this is also unpopular with people, has a certain impact on human survival, and once these things pollute water resources, they may even bring immeasurable consequences. Of course, after these problems, many people are also questioning this problem, and some people say that eucalyptus does not have such a strong influence, so there is a controversial problem, but standing in most of the research situation, eucalyptus is really not very good.
Through the eucalyptus we said above can cause plant depletion problems, we know that it will also trigger a series of chain effects, when the plant is gone, it will also trigger the development of animals and plants or biodiversity, and even bring about biological extinction or excessive development of some species, causing disasters, so this is a polarization model. From most points of view, this is not a good tree.
< h1 class = "pgc-h-arrow-right" > so why should humans grow it? </h1>
This is no way, in the face of value, perhaps really know how to give up, eucalyptus value is too much, first of all eucalyptus can achieve very large economic value, now many development materials can be eucalyptus utilization rate of more than 90%, such as high-performance eucalyptus recombinant timber, eucalyptus veneer laminated timber, eucalyptus composite materials, etc., need it. At the same time, eucalyptus is also used for papermaking and pulp, the average length of eucalyptus fibers is 0.75-1.30 mm, and fiber density, color are first-class good raw materials, so the value after processing is higher.
Eucalyptus also has edible, medical value, eucalyptus root is edible, can also take water, while eucalyptus can also be used as fuel, speaking of fuel, in fact, everyone should think of australia's wildfire problem, eucalyptus is used as fuel in the promotion, so once ignited is very difficult to extinguish, which is also one of the reasons why Australian wildfires burn for a long time, and medical value, mainly is eucalyptus oil utilization rate, it can be used as some raw materials for rubbing.
Eucalyptus also has a higher value than these, but in smaller amounts. That is, scientists have found trace amounts of gold in the leaves of eucalyptus trees, and it is believed that this is the first time that humans have found naturally occurring gold in living organisms, so it is really eye-opening, but this content is very low, and it is in the leaves. And through later research, at least 500 eucalyptus leaves growing in gold mining areas are needed, and the amount of gold contained in it is possible to create a wedding ring, so if you want to rely on eucalyptus to get rich, this possibility is still extremely low, the content is small, and it is difficult to refine.
One of the reasons why humans still have to cultivate is mainly the value, of course, today's cultivation is basically planted on a "large scale". This can also effectively reduce the loss caused by eucalyptus trees. Of course, there are also many areas that use eucalyptus trees for greening, which is only relatively rare.
< h1 class="pgc-h-arrow-right" > summary</h1>
On the whole, eucalyptus is a kind of tree with coexistence of advantages and disadvantages, introduced to all parts of the world in the 19th century, and spread to 96 countries or regions (2012 statistics), which shows that everyone still pays more attention to the use value of eucalyptus, so eucalyptus is called "the tree of the country, the tree of the broken child, the tree of lack of virtue", in fact, it is only from a different point of view, this is the general situation.