人类活动对气候变化的影响(英文)

PengWei

200682308

AS 1b

What role has human activity played in causing climate

change and what can be done to slow down its effects?

Climate

change

is

a

natural

phenomenon,

however,

more

and

more

unreasonable human activity is speeding up climate change. At the same time,

nature seems to be punishing humans. In recent years, more and more natural

disasters have begun to appear because of climate change, such as tornadoes,

flooding

and

increase of

desert areas. Today,

climate

change

has entered

a

vicious circle and we must do everything we can to slow it down. In this essay, I

will show that human activity has played an extremely important role in climate

change.

Firstly,

this essay

will describe

three

main

human

activities

that

are

speeding

up

climate

change,

i.e.

greenhouse

gas

emissions,

population

growth and particulate matter emissions. After each problem I will show some

appropriate

measures

which

have

been

taken

to

slow

down

the

effects

of

human activity.

Firstly, this essay will analyse greenhouse gas emissions.

“At the turn of this

century scientists suggested that the carbon dioxide added to the atmosphere

from

burning fossil fuels could influence the global climate”(

Carter, 2007, p70).

Now,

in

order

to

the

social

development

can

be

fast,

human

use

a

large

number of fossil fuels. Large amount of greenhouse gas discharged everyday

because

of

fuel

burning.

Many

factories

release

harmful

gases

which

can

damage the atmosphere around the clock, such as sulfur dioxide and chlorine.

Thousands of

cars release

carbon

dioxide every

minute

in

the

world.

These

harmful gases and carbon dioxide can lead to global warming, and break the

rhythm of climate change.

In recent years, the increasing greenhouse gases emissions has attracted the

attention of the government and scientist. At the same time,

climate change

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PengWei

200682308

AS 1b

research spending has been increased in many countries, for example,

“many

billions of dollars have been expended by major climate research groups on

honing

complex

GCMs

of

the

ocean

and

atmosphere

”(

Carter,

2007,

p70).

Climate scientists try to use the computer to simulate climate change and the

influence

of

greenhouse

gases.

Now,

many

countries

have

set

up

a

department

to

monitor

the

emissions

of

greenhouse

gases.

Many

countries

have begun to eliminate or improve cars and factories which can not reach the

emissions

standards.

It

is

a

good

way

to

reduce

the

greenhouse

gases

emissions.

The second reason lead to climate change is the growing population. As we

know, the population growth very fast. Growing population need open up more

living space and more material sources, therefore, destroy the natural balance

(Causes of Climate changes, p3). Because of population growth, people need

more

resources

to

maintain

life,

for

example,

people

need

more

wood

for

construction,

and

need

for

more

land

to

live.

Therefore,

humans

cut

down

many trees and destroyed a lot of forest. A large number of forest disappeared,

desertification

become

more

and

more

serious,

hot

and

cold

cycle

become

unbalanced, the difference in temperature between day and night will become

larger. Temperature cycle damaged will speed up the climate change.

There are some solutions to these problems. Climate change begin to faster,

human should take some measures with climate change. In some countries,

there

have

some

laws

to

limit

the

population,

and

some

governments

make

regulations

about

the

supply

of

energy

under

the

constraints

of

minimizing

climate change (Bolin, 2007, p234). For instance, some laws limit the people in

the

country

can

not

have

more

than

two

children.

I

think

if

we

want

to

slow

down the climate change, most of people should pay enough attention to the

environment protect. However, in fact, many people do not care about climate

change. Therefore, governments should try all ways to make people kwon the

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