苏门答腊猩猩的种群数量比预想多
文章来源:未知 文章作者:enread 发布时间:2016-03-07 05:27 字体: [ ]  进入论坛
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Sumatran orangutans, one of the two existing species of orangutans, live exclusively in the North of the Indonesian island Sumatra and are critically endangered. This great ape is threatened by poaching and forest loss, as its habitat is being converted for agricultural purposes. An international team of researchers has now conducted an extensive series of surveys to estimate the number of Sumatran orangutans. They discovered that about 14,600 of these animals still live in the wild today - 8,000 more than previously1 thought. Good news, however, the increase in numbers is due to a more wide-ranging survey effort and not to an increase in the orangutan population. Moreover, should the deforestation of the orangs' habitat go ahead as planned, as many as 4,500 individuals could vanish by 2030. The researchers thus urge Sumatran national and provincial2 legislation to implement3 measures to avoid negative impacts on forests where orangutans occur. An accurate estimation of population size is crucial for planning future conservation activities effectively. Therefore, to cover the species' complete range, researchers from Europe and Indonesia have conducted surveys during which they counted more than 3,000 orangutan nests on more than 200 line transects covering more than 300 kilometres, equalling approximately to 14,600 Sumatran orangutans. A previous estimate found that 6,600 Sumatran orangutans lived in Northern Sumatra, a number that did not include orangs living at higher elevations4, in logged forests and in areas west of Lake Toba.
 
The researchers then examined several future deforestation scenarios5 based on actual land-use plans in the area using computer simulation. Their analyses show that as many as 4,500 orangutans could disappear by 2030 should these plans be implemented6. Therefore, even though the higher population estimate is good news, orangutan numbers are expected to increasingly decline in the long run if deforestation continues at its current pace.
 
"It was very exciting to find out that there are more Sumatran orangutans than we thought, but this does not mean that we can be complacent," says Serge Wich of Liverpool John Moores University. "Numerous development projects are planned in the area that - if they are not stopped - could sharply reduce the number of orangutans over the coming years."


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1 previously bkzzzC     
adv.以前,先前(地)
参考例句:
  • The bicycle tyre blew out at a previously damaged point.自行车胎在以前损坏过的地方又爆开了。
  • Let me digress for a moment and explain what had happened previously.让我岔开一会儿,解释原先发生了什么。
2 provincial Nt8ye     
adj.省的,地方的;n.外省人,乡下人
参考例句:
  • City dwellers think country folk have provincial attitudes.城里人以为乡下人思想迂腐。
  • Two leading cadres came down from the provincial capital yesterday.昨天从省里下来了两位领导干部。
3 implement WcdzG     
n.(pl.)工具,器具;vt.实行,实施,执行
参考例句:
  • Don't undertake a project unless you can implement it.不要承担一项计划,除非你能完成这项计划。
  • The best implement for digging a garden is a spade.在花园里挖土的最好工具是铁锹。
4 elevations cb4bbe1b6e824c996fd92d711884a9f2     
(水平或数量)提高( elevation的名词复数 ); 高地; 海拔; 提升
参考例句:
  • Weight of the crust changes as elevations are eroded and materials are deposited elsewhere. 当高地受到侵蚀,物质沉积到别的地方时,地壳的重量就改变。
  • All deck elevations are on the top of structural beams. 所有甲板标高线均指结构梁顶线。
5 scenarios f7c7eeee199dc0ef47fe322cc223be88     
n.[意]情节;剧本;事态;脚本
参考例句:
  • Further, graphite cores may be safer than non-graphite cores under some accident scenarios. 再者,根据一些事故解说,石墨堆芯可比非石墨堆芯更安全一些。 来自英汉非文学 - 环境法 - 环境法
  • Again, scenarios should make it clear which modes are acceptable to users in various contexts. 同样,我们可以运用场景剧本来搞清楚在不同情境下哪些模式可被用户接受。 来自About Face 3交互设计精髓
6 implemented a0211e5272f6fc75ac06e2d62558aff0     
v.实现( implement的过去式和过去分词 );执行;贯彻;使生效
参考例句:
  • This agreement, if not implemented, is a mere scrap of paper. 这个协定如不执行只不过是一纸空文。 来自《现代汉英综合大词典》
  • The economy is in danger of collapse unless far-reaching reforms are implemented. 如果不实施影响深远的改革,经济就面临崩溃的危险。 来自辞典例句
TAG标签: species orangutan ape
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