关于植树造林的作文400字-植树造林作文-语文学习资
编辑： admin 2017-19-02
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绿化祖国,就是要开展植树造林活动,用绿色植物把国土覆盖起来.植树造林还有许多好处呢! 首先,植树造林能放风固沙.每一次狂风吹起,沙砾飞扬,不得不出门的人们,像鱼儿在惊涛骇浪中在挣扎,顺着风走的人身不由己的向...
类似问题
类似问题1：植树造林的文章[英语科目]
"The path strangled onward into the mystery of the primeval
forest"(179). This sentence displays just one of the multiple
personalities that the forest symbolizes in The Scarlet Letter written by
Nathaniel Hawthorn. In the Scarlet Letter the forest symbolizes much
more than one might imagine. Each character brings out a
different side of the forest, however the forest also brings out a
different side in each character. For some the forest may be a place of
sinister thoughts and wrong doing, but for others it is a place of
happiness and freedom.
The first encounter with the forest we have symbolizes just some of
the evil that lingers within the darkness of the forest. As Hester and
Pearl are leaving governor Bellinghams estate they are confronted by
mistress Hibbins who explains that the witches are meeting in the forest,
and she then invites Hester to become more deeply involved with her evil
ways. "Wilt thou go with us tonight"(113) asked mistress Hibbins, yet
Hester refused to sign her name in the black mans book on that night. She
explains that the only reason she does not sign is because Pearl is still
in her life. At this time the forest itself is a open door to another
world, a wicked world that would take her away from her present situation,
but that is not the only door that the forest holds.
The forest is an open door to love and freedom for both Hester and
Dimmesdale. It is a place where the letter on their bodies can no longer
have an effect on them if they choose. A world ruled by nature and
governed by natural law as opposed to the artificial strict community with
its man made puritan laws. Its as if the forest represents a key to the
shackles the Hester and Dimmesdale have been forced to wear, all that they
have to do is unlock it. Although if they choose not to unlock them, they
begin to dwell on the things that they have done to deserve the shackles.
In this the forest represents a thing of truth, weather it be good or bad.
In pearls eyes the forest has a totally different concept. To
Pearl the forest is like a best friend. It treats her as if she were one
of its own. The animals do not runaway at her ever move, instead they come
to her with open arms. The light is chasing her no matter where she goes.
She is able to run and play freely to her innocent hearts content. She can
do that because her heart is innocent and the forest recognizes that.
When reading this book you can look deeper into the forest and find
more powerful symbols inside. The sunlight is one of the most obvious of
them all. While Pearl plays in the forest the sunlight seems to find her
no matter where she is standing. At the same time it will not cast a
single glimmer of light onto Hester, until she removes her scarlet letter.
Then at that point the sun breaks through the dense trees and gazes upon
her. The light is a symbol of purity and truth. It does not shine on
Hester when she has the letter because the letter itself is not pure, even
though everything underneath the letter has become pure through the years.
The Brooke that runs through the forest is also full of symbolism.
At one point of the story the Brooke represents a wall. "Then strange
child, why does thou not come to me?"(205) asks Hester. She explains that
she will not cross the Brooke because she Hester is not wearing her letter.
To Dimmesdale the Brooke then becomes a boundary between two worlds, a
world of peace and freedom and a world of lies and guilt. The Brooke is
also known to symbolize one more thing throughout the entire story. It is
often suggestive that the Brooke often represents pearl. One reason is
because the Brooke has an unknown source, Pearl also has an unknown source,
meaning that most people don't know where the Brooke or Pearl came from.
One more similarity between the two is that the Brooke is woven trough a
dark and often evil forest, yet the water does not stop traveling. Pearl
is in the exact same situation. Throughout her hole life she has been
unwillingly woven into the evil and sorrow the her mother deals with. So
just as the Brooke she keeps on going.
As you have seen there is a fountain of symbolism in the Scarlet
Letter. The forest is one of the most symbolized objects in the entire
story. It is one thing that can bring joy, sorrow, freedom, and evil to
your life, but most of all the forest brings you truth. Once you walk into
the forest lies no longer exist. This is show in every example given, that
the truth comes out in the forest no matter what. Maybe that is why these
characters go there, because it is the only place truth exists.
类似问题2：关于植树造林的文章（短一点）[数学科目]
(⊙o⊙)…额,自己写吧.
类似问题3：有关植树造林的文章,明天就开学了.符合高一生的水平的,
我有一篇文章,但是篇幅太长了,发不进来.你可以去我的QQ空间里看一下,文章的名字叫：植树造林绿大地
类似问题4：关于植树造林的作文,
我从小就喜欢栽培,对树就有一种特别的感情,所以我也了解的树木的种种好处与作用,希望与大家分享
首先,植树造林为人们的生活和工农业生产提供了许多有用的原料和用品.如在吃的方面,有各种香甜鲜美的水果；有芳香四溢的茶叶；还有滋补身体的冬青树上的女贞子,鲜美可口、清肺平喘的银杏等珍贵药材.在用的方面,搞建筑,开采煤炭,交通运输,制造车辆、船舶、尺机,修建桥梁、码头,造纸等都需要木材.比如,修建1000平方米混合结构的房屋需要木材130立方米；开采1000吨煤,需要22立方米的坑木.在农业生产中,我们使用的大量农具也离不开木材.
木材加工产品更受到人们的喜爱.锯末水解可得葡萄糖、洒精等物质.50公斤锯末可提取糖桨37公斤或结晶葡萄糖10公斤,食用或药用均可.每1立方米干锯末,可提取酒精70公斤,饲料酵酶18公斤, 醛4.2公斤,干冰18公斤,木素板33平方米.每百斤桦树皮可提炼桦皮焦油15公斤～30公斤,它可用来配制木材防腐剂,或加工提取汽油等物质.用1立方米木材,能制成150多公斤的人造丝或人造毛,相当于7.5亩棉田的年产量或20只～30只羊的年产毛量.还有用于房屋建筑、家具等用的胶合板、纤维板大都是森林采伐和木材加工剩余的“废物”制成的.至于车辆上的轮胎,大家肯定知道是从橡胶树上“脱胎”而来的.
其次,植树造林可为人类提供氧气,净化空气,美化环境,有利于生态环境的保护.我们知道人每天吸入氧气,吸出二氧化碳,树正好相反,它的叶子在阳光照耀下不断进行光合作用——吸入二氧化碳,释放出氧气.据统计,一亩树林每天能吸收67公斤二氧化碳,释放出49公斤氧气,足可供65个成年人呼吸用.由于森林具有遮荫避风、树木呼吸和蒸腾作用,因此有成片树林的地方冬暖夏凉,可以避暑疗养.树木能粘附空气中的尘埃而使空气清洁、新鲜.科学测试表明：一亩树林一个月可吸收有毒气体二氧化硫4公斤,一年可吸收尘埃20吨～60吨.此外,树木在呼吸过程中,产生大量特殊空气,能治疗一些疾病,对人体有良好作用,比如,桦树、杨树、桧树等能分泌出植物杂菌素,可以杀死白喉、肺结核、伤寒、痢疾等病原菌.道路两旁栽树可以降低噪音,多种多样的树型、花果和翠绿的枝叶可以美化环境,为人们学习、工作和生活提供理想化环境.
再次,植树造林能够使水土得到保持,有效地控制水土流失和土地沙漠化.我国许多地方植被覆盖率低,水土流失严重.特别是黄河流域,由于土质松散,每到雨季,雨水冲刷,大量泥沙流入黄河,致使河水变浑,河床增高,给防洪防汛工作带来了巨大的困难.而多植树,就可以控制水土的流失.因为树木有庞大的根系,这些根系像一只只巨手牢牢抓住了土壤.土壤中的水分,就被树根吸收畜存.据统计,一亩树林比无林地区多蓄水20吨.要控制沙漠,最有效最主要的方法就是植树造林.因为“沙漠向人类进攻的主要武器是风和沙”（竺可桢语）,大量植树造林,就可以形成一道道防护林,减少风的速度和力量,固定沙丘,起到控制风沙的作用.
树木是生命的根本之一,请大家爱护树木,植树造林,为我们美好的生活贡献力量.
类似问题5：植树造林 改善环境的作文怎么写?
人与自然的关系是人类始终面临和解决的问题.当今,人与自然环境的关系出现了紧张和对立,整个生态系统不断受到破坏.由此,必须要建立人与自然和谐与共的新文明.为保障人与自然的和谐,保护生态平衡,除经济和法律手段外,还必须依靠道德的力量.建立适应生态环境保护和改善的道德规范,有利于形成人们坚定的内心信念,形成强大的社会舆论压力.\x0d也许,你会问：“我们只是初中生,恐怕不能做得那么全吧?”没关系,青少年也有相应的生态环境道德的具体行为要求,也很简单,为：珍爱生灵,节约资源,抵制污染,植绿护绿.\x0d我们青少年既是生态环境道德的重点教育对象,更是生态环境道德建设的积极推动者.所以我们广大青少年要率先行动、开风气之先,充分发挥生力军作用.为了与和谐与共的人与自然关系理想状态和境界相适应,生态环境道德要求人们热爱自然、保护生态、改善环境.对于我们青少年来说,要首先做到：\x0d珍爱生灵.平等对待自然界中的其它生命体,不随意损害它们,保持生态系统平衡.不践踏草木,不攀折花叶,不虐待小动物,不吃珍稀动植物等都是珍爱生灵.\x0d节约资源.我们只有一个地球,资源有限,生活在地球上的人却不断增长.节约粮食、节约用水、节约纸张,使用可再生的资源、分类回收废物,生活简朴等等,都是节约资源.\x0d植绿护绿.没有森林和植被等绿色,便没有人类,没有地球上的绝大多数生命.多植一棵树、多种一片草、多养一盆花、多增加一些绿色,都是青少年应尽的义务.\x0d抵制污染.不当的生产生活行为,会带来很大污染.不乱扔垃圾、不用或少用难降解和难再生的物品、不焚烧秸秆、制止污染等都是抵制污染.\x0d我们要把植树造林等活动作为青少年传播生态环境道德的舞台.发挥我们身边周围的一些公益行动的公益特性,动员青少年宣传生态环境道德,用小手牵动社会这个大手.树立践行生态环境道德的模范,鼓励青少年监督、抵制违背生态环境道德的行为.\x0d在我们的生活中,细节是最重要的.我们已经意识到了生态环境在开始恶化,所以,我们已经在开始保护着生态环境.但是,科学的力量是无穷大的,科学一定能战胜迷信.用科学解决问题才是正确的.\x0d从前看过一篇文章,讲述了当地的人民为了保护鹿而把狼全部杀死,最终鹿群“泛滥”,当地的草全被鹿啃完了.从中看出,我们即使是要保护生态就应该把生物之间的食物链破坏.食物链被破坏后,与其有直接关系或间接关系的事物都会混乱,这样长期如此,会变得一发不可收拾.