受威胁植物濒危等级划分概述

濒危物种通常是指由于物种自身原因或受到人类活动或自然灾害影响而有灭绝危险的所有生物种类。目前国内外存在着许多濒危物种等级的划分标准，最常用的是Mace—Lande物种濒危等级。我国受威胁的植物等级被划分为濒危（Endangered），稀有（Rare）和渐危（Vulnerable）3个等级。物种濒危等级评价标准的主要发展趋势就是由定性指标向定量指标发展，但是当前国内外对植物稀有性和受威胁的各个等级的定量限定尚未有一个统一的标准。

SUMMARY OF ENDANGERED LEVEL DMSION OF ENDANGERED PLANT SPECIES

The endangered species are referred to all kinds of organisms that have risks of extinction owing to its own reasons,human beings activities or natural disaster effects.At present,there are many division standards of endangered species at home and abroad,and the endangered species level of Mace-lande is commonly used.In China,the endangered plant species are divided into three levels of endangered level,rare level and vulnerable level.The transformation of qualitative index to quantitative index is the main...