一、急求 植树的优缺点 的英语作文~快的必追加！！！急！！！

The advantage and disadvantage of tree planting

Tree planting is the process of transplanting tree seedlings, generally for forestry, land reclamation, or landscaping purposes.

Tree planting is carried out in many different parts of the world,Because trees remove carbon dioxide from the air as they grow, tree planting can be used as a geoengineering technique to remove CO2 from the atmosphere.

Government agencies, environmental organisations and private trusts carry out tree planting for conservation and climate change mitigation. Landcare Research use planted forests for their EBEX21 system for greenhouse gas emissions mitigations.

Climate scientists believe that human-induced global deforestation is responsible for 18-25% of global climate change. Trees sequester carbon through photosynthesis, converting carbon dioxide and water into molecular dioxygen (O2) and plant organic matter, such as carbohydrates. Hence, forests that grow in area or density and thus increase in organic biomass will reduce atmospheric CO2 levels.

Compared to less vegetated lands, forests affect climate in three main ways:

Cooling the Earth by functioning as carbon sinks, and adding water vapor to the atmosphere and thereby increasing cloudiness.

Warming the Earth by absorbing a high percentage of sunlight due to the low reflectivity of a forest's dark surfaces. This warming effect, or reduced albedo, is large where evergreen forests, which have very low reflectivity, shade snow cover, which is highly reflective.

To date, most tree planting offsets strategies have taken only the first effect into account. A study published in December 2005 combined all these effects and found that tropical forestation has a large net cooling effect, because of increased cloudiness and because of high tropical growth and carbon sequestration rates.

However, this study confirmed earlier findings that reforestation of colder regions probably results in global warming. According to Ken Caldeira, a study co-author from the Carnegie Institution for Science, "To plant forests outside of the tropics to mitigate climate change is a waste of time."

His premise that grassland reflects more sun, keeping temperatures lower, is, however, applicable only in arid regions. A well-watered lawn, for example, is as green as a tree, but absorbs far less CO2. Deciduous trees also have the advantage of providing shade in the summer and sunlight in the winter; so these trees, when planted close to houses, can be utilized to help increase energy efficiency of these houses.

However, the science linking trees and climate change is largely unsettled, and trees remain a controversial source of offsets.

The type of tree planted may have great influence on the environmental outcomes. Planting the wrong kind of trees, such as monocultures of eucalyptus where they are not native species, can devastate the lands of the local people. However, it is often much more profitable to outside interests to plant non-native fast-growing trees, such as eucalyptus or pine, even though the environmental and biodiversity benefits of such monoculture plantations are not comparable to native forest, and such offset projects are frequently objects of controversy.

To promote the growth of native ecosystems, many environmentalists advocate only indigenous trees be planted. A practical solution is to plant tough, fast-growing native tree species which begin rebuilding the land. Planting non-invasive trees that assist in the natural return of indigenous species is called "assisted natural regeneration."

二、植树对人类的好处是什么？（要求用英文叙述）

四大好处 1.树木能调节气候,保持生态平衡.树木通过光合作用,吸进二氧化碳,吐出氧气,使空气清洁,新鲜.一亩树林放出的氧气够65人呼吸. 2.树能防风固沙,涵养水土,还能吸收各种粉尘,一亩树林一年可吸收各种粉尘20—60吨. 3.树林能减少噪音污染.40米宽的林带可减弱噪音10—15分贝. 4.树木的分泌物能杀死细菌.空地每立方米空气中有3,4万个细菌,森林里只有3,4百个. 植树造林是我们每个公民的义务，国家还专门规定了在三月十二日这天为植树节。植树造林对我们的学习、工作、生活等方面都有很大的好处。 植树造林可以净化空气、美化环境、绿化祖国等，它还能制造氧气供人们吸收，吸进人们呼出的二氧化碳。如果不大量的植树造林，那么地球上的氧气，就很难满足人类和各种生物的需求。 植树造林还可以减少噪音。噪音的污染对人类的生活、学习、工作、休息等方面都造成了很大的危害，可以说是人们的“敌人”。因此我们更要重视植树造林。噪音还可以使人类在长期的生活中听力减弱、耳聋、变傻,心脏、血压、神经等出现异常。甚至，还能让人在长期的噪音煎熬下死亡。这样植树造林就能使噪音减小四、五倍。 植树造林不仅对于人类的生存具有十分重要的环境效益，而且对于人类的生产和生活具有巨大的经济效益。 人类对自然资源的不合理开发利用，是造成生态失衡的主要原因。乱砍滥伐、毁林开荒、过度放牧等，会破坏森林和草场，造成水土流失和土地荒漠化，使沙尘暴频繁出现。不合理的开发、占用土地，使耕地面积日益减少。 植树造林在维护生态平衡中起着重要作用，具有制造氧气、净化空气、涵养水源、保持水土、调节气候、防风固沙、消除噪音等功能。现在，我们了解了植树造林这么多的好处，我们就更要自觉履行植树造林的义务，为创造我们美好的家园奠定基础。

英文翻译是

Four good

1. Trees can regulate our climate, maintaining ecological balance. Trees through photosynthesis, they absorb carbon dioxide, oxygen spit, Clean air, fresh. 65 acre forest emit eno 2. Fixing trees can, conserve soil and water, but also to all kinds of dust. an acre of trees can absorb all kinds of dust 20-60 tons a year. ugh oxygen breathing. 3. Mangroves can reduce noise pollution. 40-meter-wide tree belt noise can be reduced 10 to 15 decibels. 4. Bacteria can kill trees secretions. 3,4 per cubic meter of air space with 10,000 bacteria, only three forest. four hundred. Afforestation is the obligation of every citizen, the state will also set a March 12 special day for the past 21 years. Afforestation of our study, work, life, and so have a great advantage. Afforestation can purify the air, landscaping, afforestation of the motherland, it is also capable of absorbing oxygen for people. absorb the carbon dioxide people exhale. If a large number of afforestation, the world's oxygen, it will be difficult to meet human and biological needs. Planting trees can also reduce noise. Noise pollution on human life, study, work, rest and so has caused a lot of harm. It can be said that the "enemy." Therefore, we should attach importance to afforestation. Noise can also enable human life in the long-term decline of hearing, deaf, changed silly, heart, blood pressure, nerves and other abnormalities. Even, but also people who died under the long-term noise nuisance. 4 afforestation will be able to reduce this noise, five times. Afforestation is very important not only for the survival of mankind's environmental benefits, and the production of human life and has enormous economic benefits. Irrational exploitation of natural resources, ecology is the main reason for the imbalance. Deforestation, deforestation, land reclamation, overgrazing, destroy forests and pastures, causing soil erosion and desertification. make frequent sandstorms. Irrational development of the land, arable land is decreasing. Afforestation plays an important role in maintaining ecological balance has created oxygen, air pollution, water conservation, soil and water conservation. regulatory climate, fixing, noise abatement and other functions. Now, we know so many of the benefits of afforestation, reforestation, we should more conscientiously fulfill the obligations lay the foundation for the creation of our beautiful homeland.

三、用英语谈论植树对人与环境的益处

树木能调节气候，保持生态平衡，树木通过光合作用，吸进二氧化碳，吐出氧气，使空气清洁，新鲜。一亩树林放出的氧气够65人呼吸一辈子。

Trees to regulate climate, maintaining the ecological balance, the trees through photosynthesis, the inhalation of carbon dioxide, spit out oxygen, make the air clean, fresh. An acre of forest release of oxygen enough for 65 people to breathe for a lifetime.

树能防风固沙，涵养水土，还能吸收各种粉尘，一亩树林一年可吸收各种粉尘20—60吨。

The tree can wind and sand, water and soil conservation, but also to absorb all kinds of dust, an acre of forest a year can absorb all kinds of dust 20 - 60 tons.

树林能减少噪音污染。40米宽的林带可减弱噪音10—15分贝。噪音的污染对人类的生活、学习、工作、休息等方面都造成了很大的危害，可以说是人们的“敌人”。因此我们更要重视植树造林。噪音还可以使人类在长期的生活中听力减弱、耳聋、变傻，心脏、血压、神经等出现异常。甚至，还能让人在长期的噪音煎熬下死亡。这样树林就能使噪音减小四、五倍。

Forest can reduce noise pollution. 40 meters wide belt noise can be reduced 10 to 15 decibels. Noise pollution on human life, study, work, rest and so on have caused great harm, it can be said that people's "enemy"". Therefore, we should pay more attention to afforestation. Noise can also make people in the long-term life of hearing loss, deafness, become stupid, heart, blood pressure, nerves and other abnormalities. Even, can make people in the long-term noise suffering death. Such trees can make noise reduction of fourth and five times.

树木的分泌物能杀死细菌。空地每立方米空气中有3，4万个细菌，森林里只有300－400个。植树造林是我们每个公民的义务，国家还专门规定了在三月十二日这天为植树节。植树造林对我们的学习、工作、生活等方面都有很大的好处。

The secretions of trees can kill bacteria. Every cubic meter of air space in 30000 or 40000 bacteria, the forest is only a 300-400. Afforestation is our obligation of every citizen, the state also specifically defined in March 12th this day for arbor day. Afforestation on our study, work, life and other aspects of a great benefit.

树可以减低温度，和提高湿度。30度气温可以降到二十几度左右。

Trees can reduce the temperature and increase the humidity. 30 degrees temperature can be reduced to about 20 degrees.

人类对自然资源的不合理开发利用，是造成生态失衡的主要原因。乱砍滥伐、毁林开荒、过度放牧等，会破坏森林和草场，造成水土流失和土地荒漠化，使沙尘暴频繁出现。不合理的开发、占用土地，使耕地面积日益减少,所以植树是有必要的。

The irrational exploitation and utilization of natural resources by human beings is the main cause of ecological imbalance. Deforestation, deforestation, land reclamation, overgrazing, and the destruction of forests and pastures, resulting in soil erosion and land desertification, make frequent sandstorms. Unreasonable development, occupation of land, so that the area of arable land is decreasing, so it is necessary to plant trees.

四、植树节的好处有哪些 植树节的好处介绍

1、树木能调节气候，保持生态平衡，树木通过光合作用，吸进二氧化碳，吐出氧气，使空气清洁、新鲜。一亩树林放出的氧气够65人呼吸一辈子。

2、树能防风固沙，涵养水土，还能吸收各种粉尘，一亩树林一年可吸收各种粉尘20—60吨。

3、树林能减少噪音污染。40米宽的林带可减弱噪音10—15分贝。

4、树木的分泌物能杀死细菌。空地每立方米空气中有3到4万个细菌，森林里只有300-400个。植树造林是我们每个公民的义务，国家还专门规定了在三月十二日这天为植树节。植树造林对我们的学习、工作、生活等方面都有很大的好处。

5、树可以减低温度，和提高湿度。30度气温可以降到二十几度左右。