北京地区野生草本观赏植物保护级别的评定与保护区研究

Evaluation of Conservation Priority Classes of Wild Omamental Herbaceous Plants in the Area of Beijing

根据2012年开展的北京地区野生草本观赏植物资源调查为基础,通过量化方法对物种的濒临消失风险和优先保护级别进行评价。定量评价北京地区野生草本观赏植物的濒临消失程度采用物种分布频度、分布多度、分布方式及观赏和其他应用价值5个指标,结果显示不存在极易消失的野生草本观赏植物种,存在容易消失种8种,可能消失种28种,其余253种为安全种。优先保护顺序的评定综合濒临消失风险指数和遗传损失指数2个指标确定:一级优先保护植物9种,二级优先保护植物有29种,非保护植物共251种,根据不同野生草本观赏植物的保护级别和分布确定8个保护区。

Based on the investigation in field, considering the relative document and sample, the extinction risk and the classes of conservation priority of wild plants in Beijing with the quantitative methods were studied in this article. The wild herbal decorative plant in Beijing was evaluated by the location rate of species, distribution frequency of sample plot, existent method, other application value, etc. The results showed that there were no endangered species, 8 vulnerable species, 28 threaten species and 253 secure species. With the comprehensive evaluation of protection priority,protective grade and district have been defined by the extinct index and genetic loss index, in order to define the protective class as following： 9 kinds as class1, 29 kinds as class2 and 251 kinds as non-protective.Eight protective districts have been nominated by protective grade and distribution.