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
2024-08-21
27
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] 【R1】
选项
答案
stabilize
解析
stablize“使稳定”,即文中的“steady”。
转载请注明原文地址:https://tihaiku.com/zcyy/3729480.html
相关试题推荐
Conventionalwisdomsaystreesaregoodfortheenvironment.Theyabsorbcar
Conventionalwisdomsaystreesaregoodfortheenvironment.Theyabsorbcar
Conventionalwisdomsaystreesaregoodfortheenvironment.Theyabsorbcar
Conventionalwisdomsaystreesaregoodfortheenvironment.Theyabsorbcar
Conventionalwisdomsaystreesaregoodfortheenvironment.Theyabsorbcar
Theheroofthebook,Charles,isaconventionalnineteenth-centurygentleman;t
随机试题
Forsomepeople,thelightofhumanattentionhasanunbearablebrilliance.
以“所有P是M”和“所有S不是M”为大、小前提进行三段论推理,可必然推出()。A
下列做法中,符合押品处置阶段控制的要求的是()。A.办理解押手续时,委托客
一般性的货币政策工具不包括()。A.直接信用控制 B.法定存款准备金率
根据《测绘成果管理条例》,下列职责中,不属于测绘成果保管单位职责的是( )。A
A.间质性肾炎 B.急性肾炎 C.药物中毒 D.急性肾盂肾炎
从测验结果来看,该求助者()。多选A.肯定患有心理疾病 B.总分超过了全国常模
张某准备搞运输,2020年1月8日以拟购买的5辆载重卡车(合同中注
施工图设计应当符合经审批的初步设计文件要求,满足工程质量、耐久和安全的强制标准和
小儿等渗脱水补充继续丢失,所选液体的张力为A.2/3张至等张 B.1/5~1/
最新回复
(
0
)