首页
登录
职称英语
Impact of Urbanization The effects of urbanization: Example: in the U.S.only【L3
Impact of Urbanization The effects of urbanization: Example: in the U.S.only【L3
游客
2024-01-05
6
管理
问题
Impact of Urbanization The effects of urbanization: Example: in the U.S.
only【L31】________of land built on
loss of 【L32】________far larger
could impact on world【L33】________in future
Research methods:
a weather【L34】________ for clouds was used
land use divided into【L35】________.
data used to calculate the【L36】________of all areas
Results:
urban areas often built on the【L37】________
a second study confirmed that prime land is being converted 【L38】________of vegetation is lost per annum
The future:
countries such as【L39】________need to do investigations
stop investing in infrastructure in areas of fertile land
encourage people to move by giving them【L40】________. [br] 【L33】
Hi, good morning everyone. I’m here today to present my findings on the process of urbanization and its impact on the environment. As you know, urbanization involves the movement of people from the countryside to the cities. As this process continues, the cities of the world continue to grow. I will demonstrate how this growth is eating away at the planet’s most fertile land.
My research has focused on two studies that looked at land use in the United States. These have shown that since its independence,
only three per cent of all land in the United States has been built on.
However, the same studies have also shown that the resulting
loss of productive land is comparatively much, much greater.
This isn’t so much of a problem in America as it has a relatively low ratio of people to land. However, most other countries are not so blessed, the impact of which could have dire consequences for the future. The real danger here is if this pattern were to be repeated by developing countries, it could have a major
effect on the world’s food supplies in the next 50 years.
In order to reach this conclusion, several research methods were adopted. A group of scientists in the United States
used a weather satellite
that normally maps moonly cloud cover at night. However, on nights when there were no clouds, they used the satellite to map the generation of heat from city lights. They then took the data and
divided land use into three categories:
urban, semi-urban and non-urban land use. Next, they calculate how active the vegetation is in each region by using different satellites. When they combined this information with previous statistics and weather conditions, they
came up with a number for total productivity for all areas.
So what did the results of this process of land classification show? Well, firstly, they proved that although only a tiny percentage of the land in the United States is urbanized, and 29% of land is used for agricultural purposes,
the land which has been built on actually has the best soils.
These were independently cooperated by a second team of scientists in San Francisco, whose results show that this process is happening even faster in the southeastern corner of the United States. This means that land is extremely productive from an agriculture point of view, is being taken over by lawns, golf courses and a few scattered trees. As a direct result of urbanization, the researchers in San Francisco calculated that every year
1 million tonnes of plants are ’lost’ in the U.S.
So what does this mean for the future? Well, I have come up with some of my own ideas for practical solutions. Countries should calculate whether urbanization is happening on their fertile lands too especially if they have large populations compared to the amount of land available,
1ike India and China,
for example. If it is, then every effort should be made to stop the process from happening This can be done in many ways. One of them is to stop investing in the infrastructure of those areas If people don’t have the facilities they need, they won’t want to live there. But in my opinion, the main solution here is to
offer people financial incentives
to move away from fertile land to areas that are less valuable in agricultural terms.
I hope you’ve enjoyed my presentation this morning. Thanks for your kind attention. I will now take any questions...
选项
答案
food supplies .
解析
录音原文指出如果这种模式继续被发展中国家重复,那么它在未来50年将会对全球食物的供应产生巨大的影响。
转载请注明原文地址:https://tihaiku.com/zcyy/3335980.html
相关试题推荐
REVIEWOFRESEARCHONTHEEFFECTSOFFOODPROMOTIONTOCHILDRENThisreviewwas
REVIEWOFRESEARCHONTHEEFFECTSOFFOODPROMOTIONTOCHILDRENThisreviewwas
REVIEWOFRESEARCHONTHEEFFECTSOFFOODPROMOTIONTOCHILDRENThisreviewwas
REVIEWOFRESEARCHONTHEEFFECTSOFFOODPROMOTIONTOCHILDRENThisreviewwas
CyclingholidayinAustriaExampleAnswerMostsuitableholidaylasts__10__days
CyclingholidayinAustriaExampleAnswerMostsuitableholidaylasts__10__days
CyclingholidayinAustriaExampleAnswerMostsuitableholidaylasts__10__days
CyclingholidayinAustriaExampleAnswerMostsuitableholidaylasts__10__days
CyclingholidayinAustriaExampleAnswerMostsuitableholidaylasts__10__days
CyclingholidayinAustriaExampleAnswerMostsuitableholidaylasts__10__days
随机试题
编报的统计报表要按现场实际完成情况严格审查核对,不得多报、早报、重报、漏报
运输消费者在选择不同运输方式(不同运输企业)过程中,整体顾客成本也完全不同,它的
血液凝固的内源性激活途径与外源性激活途径的主要差别在于A.因子Ⅹ的激活过程 B
关于长拳基本手型和步型描述不正确的是( )A.手型主要有拳、掌、勾、握 B.
A.壮肾阳,温脾阳 B.补肾阳,祛风湿 C.补肝肾,暖腰膝 D.补肝肾,强
A.中药二级保护 B.商标保护 C.监测期保护 D.专利保护 E.中药一
按并购的实现方式来划分,企业并购可分为()。A:协议并购 B:债务式并购 C
某家电行业每年平均有3亿人购买家电,每人每年平均购买1.5台,平均每台的价格为2
“自知力不完整”或“无自知力”是指()。 (A)自我意识对身体状态的反映
皮肤感邪,常内传于A.心 B.肺 C.肝 D.脾 E.肾
最新回复
(
0
)