人为活动对舟山群岛大中型兽的影响：大中型兽受威胁状态分析

本文根据历史记载对比和皮张收购资料分析研究了舟山群岛大中型兽的受威胁状态。结果显示，舟山群岛曾有大中型兽16种，5种已绝灭，3种处于濒危状态，3种分布区缩小（一种种群数量正在下降），3种种群保持稳定，2种种群动态不明；食肉动物的绝灭率大于食草动物；大型动物绝灭率较高；岛屿物种绝灭率高于邻近大陆。文章还比较了确定种群趋势的几种方法。

The effects of human activities on large and middle mammals on Zhoushan Islands -Analysis of threatened Status of large and middle mammals

The threatened status of large and middle mammals on Zhoushan Islands has been studied according tocomparison of historical records and analysis of fur purchase data in this paper. The results show that therehave been 16 species of mammals on the islands, 5 species of which have been extinction, and 3 species ofwhich are endangered, and the distribution area of 3 species of which have been decreased (the population ofone of 3 species is being reduced), the population of 2 species of which is stable, and the population of 2species has no data. The extinction percentage of carnivores is larger than that of herbivores. The extinctionpercentage of large mammals is higher. The extinction percentage of species on islands is higher than on thenear by land. The methods determining population trend have been discussed.