首页
登录
职称英语
The giant panda, the creature that has become a symbol of conservation, is f
The giant panda, the creature that has become a symbol of conservation, is f
游客
2023-10-14
26
管理
问题
The giant panda, the creature that has become a symbol of conservation, is facing extinction. The major reason is loss of habitat, which has continued despite the establishment, since 1963, of 14 panda reserves. Deforestation, mainly carried out by farmers clearing land to make way for fields as they move higher into the mountains, has drastically contracted the mammal’s range. The panda has disappeared from much of central and eastern China, and is now restricted to the eastern flank of the Himalayas in Sichuan and Gansu provinces, and the Qinling Mountains in Shanxi province. Fewer than 1,400 of the animals are believed to remain in the wild.
Satellite imagery has shown the seriousness of the situation ; almost half of the panda’s habitat has been destroyed or degraded since 1975. Worse, the surviving panda population has also become fragmented; a combination of satellite imagery and ground surveys reveals panda "islands" in patches of forest separated by cleared land. The population of these islands, ranging from fewer than ten to more than 50 pandas, has become isolated because the animals are unwilling to cross open areas. Just putting a road through a panda habitat may be enough to split a population in two.
The minuscule size of the panda populations worries conservationists. The smallest groups have too few animals to be viable, and will inevitably die out. The larger populations may be viable in the short term, but will be susceptible to genetic defects as a result of inbreeding.
In these circumstances, a more traditional threat to pandas--the cycle of flowering and subsequent withering of the bamboo that is their staple food--can become literally species-threatening. The flowerings prompt pandas to move from one area to another, thus preventing inbreeding in what would otherwise be sedentary populations. In panda islands, however, bamboo flowering could prove catastrophic because the pandas are unable to emigrate.
The latest conservation management plan for the panda, prepared by China’s Ministry of Forestry and the World Wide Fund for Nature, aims primarily to maintain panda habitats and to ensure that populations are linked wherever possible. The plan will change some existing reserve boundaries, establish 14 new reserves and protect or replant corridors of forest between panda islands. Other measures include: better control of poaching, which remains a problem despite strict laws, as panda skins fetch high prices; reducing the degradation of habitats outside reserves; and reforestation.
The plan is ambitious. Implementation will be expensive--56.6 million yuan(US 12.5 million) will be needed for the development of the panda reserves--and will require participation by individuals ranging from villagers to government officials.
Summary
The survival of the giant panda is being seriously threatened. Panda numbers have already seriously decreased. This is largely because the overall size of their【61】has been reduced, and habitable areas are now disconnected from each other. Two results are that pandas are more prone to【62】problems and are unable to move around freely to follow the growth cycles of the bamboo that they eat. A new plan aims to【63】existing panda habitats and to join many of them together. This plan also includes reforestation and the creation of【64】To succeed, everyone, including both the government and【65】, will have to cooperate. [br]
选项
答案
habitat
解析
第一段第二句提到the major reason is loss of habitat,熊猫数量减少的原因是栖息地的消失。
转载请注明原文地址:https://tihaiku.com/zcyy/3095839.html
相关试题推荐
NoCreaturescanstrideashumanbeings.Theyarenotphysicallydesignedto
NoCreaturescanstrideashumanbeings.Theyarenotphysicallydesignedto
Nowadays,heavytraffichasbecomethesourceofgreatestcomplaintinmanybig
生态保护对人类的福祉和未来至关重要,也孕育着世界发展的历史性机遇。(bringabout)Ecologicalconservationisvitalf
很多伦敦人因为文化的多样性更加开放和心胸宽广。(onaccountof)ManyLondonpeoplebecomemoreopenandbr
WhydidJimClarkbecomeinterestedinfoxesasachild?[br][originaltext]W:
WhydidJimClarkbecomeinterestedinfoxesasachild?[br][originaltext]W:
WhydidJimClarkbecomeinterestedinfoxesasachild?[br][originaltext]W:
WhydidJimClarkbecomeinterestedinfoxesasachild?[br][originaltext]W:
WhydidJimClarkbecomeinterestedinfoxesasachild?[originaltext]W:Ihave
随机试题
Thebesttitleforthisselectionis______.[br][originaltext]Doyoukno
扬州是中国的历史名城之一。扬州,时称广陵,其建城可追溯至公元前(B.C.)486年。在唐宋两朝(theTangandSongDynasties)期
清代藏书家中以( )四家最为有名,号称天下四大藏书家。A.瞿、杨、陆、丁 B
几个月大的婴儿眼的调节能力接近成人A.2个月 B.5个月 C.4个月 D.
丙型肝炎的主要传播途径是( )。A.虫媒 B.母婴 C.输血及血制品 D
AA。观察元素种类,各图中分别包含黑圆、白圆、网状圆三种元素,A项正确。
下列不是合理用药指导内容的是()。A.正确"辨证"合理用药,合理选用药物及制定
甲、乙、丙三人进行百米赛跑,甲到终点时,乙离终点2米,丙离终点3米。在各自速度不
根据我国《预算法》的规定,属于全国人民代表大会预算职权的()。A、审查中央和地方
男,30岁,左髋部疼痛一年,伴低热、盗汗、食欲不振及体重减轻,查:左髋关节呈屈曲
最新回复
(
0
)