首页
登录
职称英语
Saving the juniper plant BackgroundJuniper was one of the first plants to colon
Saving the juniper plant BackgroundJuniper was one of the first plants to colon
游客
2025-02-10
1
管理
问题
Saving the juniper plant Background
Juniper was one of the first plants to colonise Britain after the last【31】________
Its smoke is virtually【32】________, so juniper wood was used as fuel in illegal activities.
Oils from the plant were used to prevent【33】________ spreading.
Nowadays, its berries are widely used to【34】________ food and drink.
Ecology
Juniper plants also【35】________several species of insects and fungus.
Problems
In current juniper populations, ratios of the【36】________are poor.
Many of the bushes in each group are of the same age, so【37】________of whole
populations is rapid.
Solutions
Plantlife is trialling novel techniques across【38】________areas of England.
One measure is to introduce【39】________ for seedlings.
A further step is to plant【40】________from healthy bushes. [br] 【L36】
For my presentation, I’m going to summarise what I’ve found out about efforts to save one plant species... the juniper bush. It once flourished in Britain and throughout the world’s temperate zones, but over the last few decades has declined considerably. Before I go on to explain the steps being taken to save it in England, let me start by looking at some background information and why the juniper has been so important in cultural as well as ecological terms, historically and in the present day.
Firstly, I want to emphasise the fact that juniper is a very ancient plant. It has been discovered that
it was actually amongst the first species of plants to establish itself in Britain in the period following the most recent Ice Age.
And, as I say, it has a much-valued place in British culture. It was used widely as a fuel during the Middle Ages because, when burnt,
the smoke given off is all but invisible
and so any illicit activities involving fire could go on without being detected, for example, cooking game hunted illegally. It also has valuable medicinal properties. Particularly during large epidemics,
oils were extracted from the juniper wood and sprayed in the air to try to prevent the spread of infection in hospital wards.
And these days, perhaps its most well-known use is in cuisine... cooking,
where its berries are a much-valued ingredient, used to flavour a variety of meat dishes and also drinks.
Turning now to ecological issues, juniper bushes play an important role in supporting other living things.
If juniper bushes are wiped out, this would radically affect many different insects and also fungus species. We simply cannot afford to let this species die out.
So, why is the juniper plant declining at such a rapid rate? Well, a survey conducted in the north and west of Britain in two thousand and four to five showed that a major problem is the fact that in present-day populations,
ratios between the sexes are unbalanced
and without a proper mix of male and female, bushes don’t get pollinated. Also, the survey found that in a lot of these populations, the plants are the same age, so this means that bushes grow old and start to die at similar times...
1eading to swift extinction of whole populations.
Now, the charity Plantlife is trying to do something to halt the decline in juniper species. It’s currently trying out two new major salvage techniques,
this time focusing on lowland regions of England.
The first thing it’s trying is to
provide shelters for the seedlings
in areas where juniper populations are fairly well established. These, of course, are designed to help protect the plants at their most vulnerable stage. A further measure is that in areas where colonies have all but died out,
numbers are being bolstered by the planting of cuttings
which have been taken from healthy bushes elsewhere.
Now, I hope I’ve given a clear picture of the problems facing this culturally and ecologically valuable plant and of the measures being taken by Plantlife to tackle them. If anyone has any questions, I’d be happy to...
选项
答案
sexes
解析
题目中的poor“(数量、比率等)不理想的。不合理的”对应录音原文中的unbalanced“不平衡的”。
转载请注明原文地址:https://tihaiku.com/zcyy/3950501.html
相关试题推荐
SavingthejuniperplantBackgroundJuniperwasoneofthefirstplantstocolon
SavingthejuniperplantBackgroundJuniperwasoneofthefirstplantstocolon
SavingthejuniperplantBackgroundJuniperwasoneofthefirstplantstocolon
SavingthejuniperplantBackgroundJuniperwasoneofthefirstplantstocolon
SavingthejuniperplantBackgroundJuniperwasoneofthefirstplantstocolon
(Dueto)persistentinbreeding,self-pollinatingplants(have)geneticallymore
Lichens.probablythehardiestofallplants,livewherevirtuallynoth
Seahorses(usually)livealongtheshoreamongseaweedand(other)plantstowh
[originaltext]Today,wearegoingtotalkaboutaspecialwaysomeplantsr
[originaltext]Today,wearegoingtotalkaboutaspecialwaysomeplantsr
随机试题
[originaltext]W:WhenisthelibraryopenonSunday?M:From9a.m.to5p.m.Q:
下列技术层内的空调设备、风管、水管、电线、电缆等由上至下的布置顺序中,正确的是(
关于机械送风系统的进风口位置的设置,以下哪个描述是错误的?()A.应直接设在
下列污水处理消毒工艺的设计,哪几项正确?()A.液氯消毒的接触池接触时间设计
工字形截面梁在图示荷载作用上,截面m~m上的正应力分布为:A.图(1). B.
子宫内膜异位症痛经的特点是A.痛经多为原发性的 B.痛经发生在月经前,经期加重
某单位所有员工都参加艺术、科学、人文三类书籍的阅读活动,每名员工至多阅读2种书籍
治疗夏季乘凉饮冷、阳气被阴邪所遏之阴暑证,应选用的药物是()A.荆芥 B
2013—2020年,全国普通高校毕业生人数同比增速超过4%的年份有几个
树图主要用于()。 A.新产品研制过程中设计质量的展开 B.目标、
最新回复
(
0
)