%0 Journal Article
%T Studies and questions of biological diversity<br>生物多样性研究及其问题
%A YUE Tianxiang
%A <br>岳天祥
%J 生态学报
%D 2001
%I 
%X Three questions on biodiversity need to be continuously studied. (1) The relationship between biodiversity and ecosystem stability: before 1970s, ecologists believed that diversity begets stability; since some theoretical ecologists challenged the conventional wisdom that stability increases with species diversity in early 1970s, there have appeared two camps who have opposite opinions. (2) The relationship between biological diversity and land productivity in terms of Darwin (1872), the biodiversity of communities is caused by niche diversification of the co occurring species and such diversification will lead to greater community productivity due to more effective resource exploitation, which has been applied to agricultural practices by many countries; but in the early 1970s, some ecologists made an objection to Darwin's results; (3) The relation between biological diversity and landscape connectivity: since the middle 1990s, some landscape ecologists think that landscape connectivity with biological diversity is positively interrelated, but the achievements from few studies are not enough to ensure the validity of this conclusion. Our study shows that the arguments and conclusions above are based on 27 different models for biodiversity, of which most are theoretically incomplete. It is necessary to use the theoretically perfect models, unified definition of the relative concepts and completely design biodiversity experiments to give satisfying solutions of the three questions.
%K biological diversity
%K ecosystem stability
%K land productivity
%K landscape connectivity
%K theoretical models<br>生物多样性
%K 生态系统稳定性
%K 土地生产力
%K 景观连通性
%K 理论模型
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=FE163E5DB2274E5937319DE98913EC37&aid=19203F5A92A7160A&yid=14E7EF987E4155E6&vid=659D3B06EBF534A7&iid=38B194292C032A66&sid=8C5DE51F0A009A0F&eid=98494933359B55EC&journal_id=1000-0933&journal_name=生态学报&referenced_num=56&reference_num=58