A tree species with an extremely small population: recategorizing the Critically Endangered Acer yangbiense

Tao Lidan; Han Chunyan; Song Kun; Sun Weibang

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A tree species with an extremely small population: recategorizing the Critically Endangered Acer yangbiense

机译：具有极其小的人口的树种：重建批判性濒危宏碁yangbiense

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Acer yangbienseY.S. Chen & Q.E. Yang (Aceraceae) is a threatened tree species endemic to China, formerly presumed to have declined to only five extant individuals, restricted to Yangbi County, Yunnan Province. Our surveys in 2016, however, located 577 individuals in 12 localities, but only three localities (with a total of 62 individuals) are protected. Nine localities are on private forest land. The population's size structure is an inverse J-curve, but there is a scarcity of trees of the smallest size class and of seedlings. Our surveys also showed that the habitat ofA. yangbienseis degraded as a result of the negative effects of agriculture, logging and wood harvesting. Assessment with the IUCN Red List categories and criteria indicates thatA. yangbienseshould be recategorized from Critically Endangered to Endangered.

机译：acer yangbiensey.s。 Chen＆Q.E.杨（Aceraceae）是一种威胁到中国的威胁的树种，以前假设只有五个现存个人拒绝，仅限于云南省yangbi县。然而，我们2016年的调查，位于12个地方的577人，但只有三个地方（共62个个人）受到保护。九个地方是私人林地。人口的尺寸结构是逆J曲线，但是稀缺的尺寸级别和幼苗的树木。我们的调查还表明栖息地。由于农业，伐木和木材收获的负面影响，Yangbienseis降解了。使用IUCN红色列表类别和标准进行评估表明QUANA。 yangbienshouthould被重建从危险地濒临灭绝的。

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《Oryx》 |2020年第4期|474-477|共4页
作者
Tao Lidan; Han Chunyan; Song Kun; Sun Weibang;
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作者单位

Chinese Acad Sci Yunnan Key Lab Integrat Conservat Plant Species E Kunming Inst Bot Kunming 650201 Yunnan Peoples R China;

Chinese Acad Sci Yunnan Key Lab Integrat Conservat Plant Species E Kunming Inst Bot Kunming 650201 Yunnan Peoples R China|Guizhou Univ Tradit Chinese Med Guiyang Guizhou Peoples R China;

East China Normal Univ Dept Environm Sci Shanghai Peoples R China;

Chinese Acad Sci Yunnan Key Lab Integrat Conservat Plant Species E Kunming Inst Bot Kunming 650201 Yunnan Peoples R China;

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原文格式 PDF
正文语种 eng
中图分类
关键词
Acer yangbiense; China; degraded; Endangered; size structure; threatened; tree; Yunnan;

机译：acer yangbiense;中国;退化;濒临灭绝的;尺寸结构;威胁;树;云南;

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A tree species with an extremely small population: recategorizing the Critically Endangered Acer yangbiense

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