北京雾灵山自然保护区植物数量评价

雾灵山自然保护区植物资源丰富,有许多是国家发布的濒危植物。还有一些是本地数量稀少,值得保护的植物,却未在国家保护名录中出现。2001—26104年在保护区6个分区设置177块样地进行标准地调查,根据植物的标准地分布频度、确限度、采样区分布频度、分布多度评价植物数量的稀少程度,评价结果为Ⅰ级12种、Ⅱ级26种、Ⅲ级68种、Ⅳ级134种、Ⅴ级233种。

Flora Quantity Evaluation for Beijing Wulingshan Nature Reserve

Wulingshan Nature Reserve is rich in flora resources, much of which are endangered species issued by the state, and still some of which are few in quantity but worth being protected, which have never appeared in any lists of national protection. Standard area inventory since 2001 to 2004 on 777 sample plots designed in 6 sub-areas in this reserve had been conducted. Some indexes such as frequency of standard area distribution, exclusiveness, sampling distribution, dominance were adopted to evaluate the scarcity of flora quantity. The result indicated that there were 12 species of Grade II, 26 species of Grade III, 68 species of Grade VI and 233 species of Grade V.