生物鏈的重要性英語作文
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在浩瀚的宇宙中，有一顆美麗的星球，之所以它會(huì)顯得這樣美麗，是因?yàn)槟菑?fù)雜多樣的生物鏈?zhǔn)顾挥猩鷻C(jī)，富有力量。但是，如果我們的生物鏈被毀壞，那在這無窮無盡的宇宙中還是否可以找到這顆美麗的星球呢？
In the vast universe, there is a beautiful planet. The reason why it looks so beautiful is that the complex and diverse biological chain makes it full of vitality and strength. But if our biological chain is destroyed, can we find this beautiful planet in this endless universe?
從古到今，世界上的所有生物都是相互依賴，共同存亡的，因此，1927年時(shí)，英國(guó)動(dòng)物學(xué)家埃爾頓首次提出了這個(gè)名詞“生物鏈”。那究竟什么是生物鏈呢？通俗地講，就是由動(dòng)物、植物和微生物互相提供食物而形成的相互依存的鏈條關(guān)系。而這，在生態(tài)學(xué)上就被稱為生物鏈。
From ancient times to the present, all living things in the world are interdependent and exist together. Therefore, in 1927, British zoologist Elton first proposed the term "biological chain". What is the biological chain? Generally speaking, it is an interdependent chain relationship formed by animals, plants and microorganisms providing food for each other. This is called the biological chain in ecology.
生物鏈的毀壞，首先是因?yàn)樗淖匀辉�。，就比如，如果一種有毒物質(zhì)被被草吸收，雖然含毒量濃度很低，不影響草的生長(zhǎng)，但兔子吃草后有毒物質(zhì)很難排泄，當(dāng)因?yàn)樗?jīng)常吃草，有毒物質(zhì)會(huì)逐漸在它體內(nèi)積累，而鷹吃大量的兔子，有毒物質(zhì)會(huì)在鷹體內(nèi)進(jìn)一步積累。因此食物鏈有累積和放大的效應(yīng)。
The destruction of the biological chain, first of all, is due to its natural causes. For example, if a toxic substance is absorbed by the grass, although the concentration of the toxic substance is very low and does not affect the growth of the grass, it is difficult for the rabbit to excrete the toxic substance after eating the grass. When it often eats the grass, the toxic substance will gradually accumulate in its body, while when the eagle eats a large number of rabbits, the toxic substance will further accumulate in its body. Therefore, the food chain has the effect of accumulation and amplification.
美國(guó)國(guó)鳥白頭鷹之所以面臨滅絕，并不是被人捕殺，而是因?yàn)橛泻瘜W(xué)物質(zhì)DDT逐步在其體內(nèi)積累，導(dǎo)致生下的蛋皆是軟殼，無法孵化。
The extinction of the American national bird, the bald eagle, is not caused by human killing, but because the harmful chemical DDT is gradually accumulated in its body, resulting in the laying of eggs are soft shells, unable to hatch.
由此可見，一個(gè)物種滅絕，就會(huì)破壞生態(tài)系統(tǒng)的平衡，導(dǎo)致其物種數(shù)量的.變化，因此食物鏈對(duì)環(huán)境有非常重要的影響。
It can be seen that the extinction of a species will destroy the balance of the ecosystem and lead to the change of the number of species, so the food chain has a very important impact on the environment.
生物鏈的毀壞，還因?yàn)槿祟惖膮⑴c。也許，在許多人心中，我們所做的種種行為都是在保護(hù)那一些動(dòng)物，但是，一些不恰當(dāng)?shù)男袨閰s起了“越幫越忙”的反效果，1907年美國(guó)人在開巴高原所做的事情就是一個(gè)很好的例子。大家可能也看過，《狼圖騰》的作者姜戎先生幾乎是用他自己親身的經(jīng)歷，以人與狼、狼與食草動(dòng)物、動(dòng)物與草原的故事，訴說著古老的蒙古草原生物鏈怎樣被人的貪婪和欲望，人的愚昧和武斷一節(jié)一節(jié)地破壞掉。而這，也是不可否定的現(xiàn)實(shí)。人類為了自己的私心，不斷獵殺動(dòng)物，不斷毀壞生物，嚴(yán)重導(dǎo)致了生物鏈的毀壞。
The destruction of the biological chain is also due to human participation. Perhaps, in many people's minds, all our actions are to protect those animals. However, some inappropriate actions have the opposite effect of "more help more help". What the Americans did in the Kaiba plateau in 1907 is a good example. You may have seen that Mr. Jiang Rong, the author of wolf totem, almost uses his own experience to tell the story of man and wolf, wolf and herbivore, animal and grassland about how the ancient Mongolian grassland biological chain was destroyed by man's greed and desire, man's ignorance and arbitrariness one by one. And this is also an undeniable reality. Human beings hunt animals and destroy living things for their own selfish heart, which leads to the destruction of the biological chain.
綜上所述，生物鏈的毀壞，是因?yàn)樗淖匀辉�，還因?yàn)槿祟惖娜我鈪⑴c。
To sum up, the destruction of the biological chain is due to its natural causes, as well as the arbitrary participation of human beings.
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