首页
登录
职称英语
Conventional wisdom says trees are good for the environment. They absorb car
Conventional wisdom says trees are good for the environment. They absorb car
游客
2023-10-20
13
管理
问题
Conventional wisdom says trees are good for the environment. They absorb carbon dioxide—a greenhouse gas—from the atmosphere and store it as carbon while releasing oxygen, a process for which forests have been called "the lungs of the planet". The roots of trees have been thought to trap sediments and nutrients in the soil. Trees have also been credited with steadying the flow of these rivers, keeping it relatively constant through wet and dry seasons, thus preventing both drought and flooding. It is all nonsense, concludes a research published this week. A four-year international study led by researchers at the University of Newcastle, in Britain, and the Free University of Amsterdam, identifies several myths about the link between forests and water. For example, in arid and semiarid areas, trees consume far more water than they trap. And it is not the trees that catch sediments and nutrients, and steady the flow of the rivers, but the fact that the soil has not been compressed.
The World Commission on Water estimates that the demand for water will increase by around 50% in the next 30 years. Moreover, around 4 billion people—one half of the world’s population— will live in conditions of severe water stress, meaning they will not have enough water for drinking and washing to stay healthy, by 2025.
The government of South Africa has been taking a tough approach to trees since it became the first to treat water as a basic human right in 1998. Trees lose water through evaporation(the technical term is transpiration)at twice the rate of grassland or South Africa’s unique fynbos scrubland. In a scheme praised by the hydrologists, the state penalizes forestry companies for preventing this water from reaching rivers and underground aquifers.
In India, large tree-planting schemes not only lose valuable water but complicate the true problem identified by the hydrologists: the unregulated removal of water from aquifers to irrigate crops. Farmers need no permit to drill a borehole and, as most farmers receive free electricity, there is little economic control on the volume of water pumped. In the Kolar district in Karnataka, wells have dried up as the water table has plummeted from six metres to 150 metres below ground.
Questions 71—75
Complete the summary with a maximum of two words from the passage, changing the form where necessary.
It is commonly believed that trees are good for the environment, as they absorb carbon dioxide and release oxygen: the roots of trees can trap water and【R1】______ the flow of rivers. However, a recent study has found that this belief is【R2】______.
According to the research, trees lose【R3】______ water through evaporation than they trap. In South Africa, forestry companies are punished as the trees they planted prevented water from【R4】______ rivers and underground aquifers. In India, farmers drilled many wells and used the underground water to【R5】______their farmland. This has lowered water table to 150 metres below ground. Many trees have been planted and in fact these trees complicate the existing problem. [br] 【R2】
选项
答案
(all)nonsense
解析
文中第一段中间提到“It is all nonsense,concludes a research published this week”,因此填入(all)nonsense。
转载请注明原文地址:https://tihaiku.com/zcyy/3115598.html
相关试题推荐
(1)Aconventionalteacher’slicenseusuallyrequiresauniversitydegreein
A.absorbsB.attemptC.misleadingD.rewarding
A.absorbsB.attemptC.misleadingD.rewarding
A.absorbsB.attemptC.misleadingD.rewarding
A.absorbsB.attemptC.misleadingD.rewarding
A.absorbsB.attemptC.misleadingD.rewarding
A.absorbsB.attemptC.misleadingD.rewarding
Iamgoingtoworkinatotallynewenvironment.【T1】________.Iamusedtow
Iamgoingtoworkinatotallynewenvironment.【T1】________.Iamusedtow
Iamgoingtoworkinatotallynewenvironment.【T1】________.Iamusedtow
随机试题
信息系统集成资质等级评定条件主要从综合条件、业绩、管理能力、技术实力和人才实力5
患者,女,40岁,侵蚀性葡萄胎。给予5-氟尿嘧啶和放线菌素D联合化疗8天。该患者
二次衬砌的施作时,应满足隧道位移相对值已达相对位移量的()。A.40%~60%
怀疑为肺癌,痰标本检查的最佳次数要求为A.4~6次B.1~2次C.6~8次D.3
顾客满意度指标中与产品有关的指标包括()。 A.特性/经济性B.可靠性C
清朝第一部完整的成文法典是()A.《大清律例》 B.《大清律集解附例》 C
中国银行业协会的主管单位是民政部。()
国外建筑安装工程费用中的暂定金额()。A.包括在合同价中,但只有工程师批准后才能
A.联苯胺 B.砷 C.氯乙烯 D.铬酸盐 E.氯甲醚引起膀胱癌的是
A.咳铁锈色痰 B.咳粉红色泡沫痰 C.唇色、睑结膜苍白 D.午后潮热,盗
最新回复
(
0
)