非洲近半数狮子面临灭绝-凯发k8官网

非洲近半数狮子面临灭绝
文章来源:未知 文章作者:enread 发布时间:2013-03-07 06:03 字体: [ ] 
(单词翻译:双击或拖选)
a new report concludes that nearly half of africa's wild lion populations may decline to near 1 over the next 20-40 years without urgent conservation measures. the 2 of many lion populations is so 3(阴冷的,荒凉的), the report concludes that fencing them in -- and fencing humans out -- may be their only hope for survival. led by the university of minnesota's professor craig packer and co-authored by a large team of lion biologists, including panthera's president, dr. luke hunter, and lion program director, dr. guy balme, the report, entitled 4 large carnivores: dollars and fence, was published today in the scientific journal ecology letters.
 
"it is clear that fences work and unfenced populations are extremely expensive to maintain," said craig packer, who also sits on panthera's cat 5 council. using field data from 11 african countries, the ecology letters study examines the cost of managing fenced and unfenced habitats, and compares lion population 6 and trends in both. the report shows that conservation costs are lower, and lion population sizes and densities are greater, in reserves secured by wildlife-proof fences, compared to unfenced 7. lions in unfenced reserves were subject to a higher degree of threats from human communities, including 8(报复的) 9 by herders(牧人), habitat loss and fragmentation, and overhunting of lion 10.
 
panthera's dr. luke hunter explained, "these findings highlight the severity of the lion conservation crisis today and the limited choices we have to ensure a future for the species. no one wants to resort to putting any more fences around africa's marvelous(非凡的) wild areas, but without massive and 11 increases in the commitment to lion conservation, we may have little choice."
 
whether fencing or some alternative physical boundary such as intensely managed 12 zones, it is clear that separating lion and human populations will be essential for the species' survival. along with maintaining physical boundaries, conflict mitigation(减轻,缓和) initiatives such as those carried out through panthera's project leonardo and the lion 13 program, are required to reduce the killing of lions where humans and lions share the landscape.
 
panthera's dr. guy balme stated, "we have shown that it is possible to keep both humans and lions in african landscapes by reducing lion-human conflict, but it requires extensive resources. as the numbers of people and their 14 continue to grow in africa, it is essential to scale up these programs to 15 losing many lion populations."
 
today, it is estimated that fewer than 30,000 lions remain in africa in just 25% of the species' original natural habitat.


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1 spwzp     
n.熄灭,消亡,消灭,灭绝,绝种
参考例句:
  • the plant is now in danger of extinction.这种植物现在有绝种的危险。
  • the island's way of life is doomed to extinction.这个岛上的生活方式注定要消失。
2 820zi     
n.困境,境况,誓约,艰难;vt.宣誓,保证,约定
参考例句:
  • the leader was much concerned over the plight of the refugees.那位领袖对难民的困境很担忧。
  • she was in a most helpless plight.她真不知如何是好。
3 gtwz5     
adj.(天气)阴冷的;凄凉的;暗淡的
参考例句:
  • they showed me into a bleak waiting room.他们引我来到一间阴冷的会客室。
  • the company's prospects look pretty bleak.这家公司的前景异常暗淡。
4 b57084daff81d3ab06526e08a5a6ecc3     
v.保护,保藏,保存( conserve的现在分词 )
参考例句:
  • contour planning with or without terracing is effective in conserving both soil and moisture. 顺等高线栽植,无论做或不做梯田对于保持水土都能有效。 来自辞典例句
  • economic savings, consistent with a conserving society and the public philosophy. 经济节约,符合创建节约型社会的公共理念。 来自互联网
5 lkvyj     
adj.劝告的,忠告的,顾问的,提供咨询
参考例句:
  • i have worked in an advisory capacity with many hospitals.我曾在多家医院做过顾问工作。
  • he was appointed to the advisory committee last month.他上个月获任命为顾问委员会委员。
6 eca5c1ea104bef3058e858fe084fb6d0     
密集( density的名词复数 ); 稠密; 密度(固体、液体或气体单位体积的质量); 密度(磁盘存贮数据的可用空间)
参考例句:
  • the range of densities of interest is about 3.5. 有用的密度范围为3.5左右。
  • densities presumably can be probed by radar. 利用雷达也许还能探测出气体的密度。
7 94cb0e40a815bea1157ac8aab9a5380d     
n.生态系统( ecosystem的名词复数 )
参考例句:
  • there are highly sensitive and delicately balanced ecosystems in the forest. 森林里有高度敏感、灵敏平衡的各种生态系统。 来自《简明英汉词典》
  • madagascar's ecosystems range from rainforest to semi-desert. 马达加斯加生态系统类型多样,从雨林到半荒漠等不一而足。 来自辞典例句
8 xjuzzo     
adj.报复的
参考例句:
  • the process can take years before the wto approves retaliatory action. 在wto通过此行动之前,这个程序恐怕要等上一阵子了。 来自互联网
  • retaliatory tariffs on china are tantamount to taxing ourselves as a punishment. 将惩罚性关税强加于中国相当于对我们自己实施课税惩罚。 来自互联网
9 kpbziq     
n.巨额利润;突然赚大钱,发大财
参考例句:
  • investors are set to make a killing from the sell-off.投资者准备清仓以便大赚一笔。
  • last week my brother made a killing on wall street.上个周我兄弟在华尔街赚了一大笔。
10 g1czh     
n.被掠食者,牺牲者,掠食;v.捕食,掠夺,折磨
参考例句:
  • stronger animals prey on weaker ones.弱肉强食。
  • the lion was hunting for its prey.狮子在寻找猎物。
11 aapxh     
adj.立即的;直接的,最接近的;紧靠的
参考例句:
  • his immediate neighbours felt it their duty to call.他的近邻认为他们有责任去拜访。
  • we declared ourselves for the immediate convocation of the meeting.我们主张立即召开这个会议。
12 ixyz0b     
n.起缓冲作用的人(或物),缓冲器;vt.缓冲
参考例句:
  • a little money can be a useful buffer in time of need.在急需时,很少一点钱就能解燃眉之急。
  • romantic love will buffer you against life's hardships.浪漫的爱会减轻生活的艰辛。
13 648b3519bd4469e1a48dff4dc4827315     
监护人( guardian的名词复数 ); 保护者,维护者
参考例句:
  • farmers should be guardians of the countryside. 农民应是乡村的保卫者。
  • the police are guardians of law and order. 警察是法律和秩序的护卫者。
14 c0wx1     
n.家畜,牲畜
参考例句:
  • both men and livestock are flourishing.人畜两旺。
  • the heavy rains and flooding killed scores of livestock.暴雨和大水淹死了许多牲口。
15 7u4zj     
v.防止,避免;转移(目光、注意力等)
参考例句:
  • he managed to avert suspicion.他设法避嫌。
  • i would do what i could to avert it.我会尽力去避免发生这种情况。
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