Against a background of continuing loss of biodiversity, it is argued that for the successful conservation of threatened plant species we need to ensure the more effective integration of the various conservation actio...Against a background of continuing loss of biodiversity, it is argued that for the successful conservation of threatened plant species we need to ensure the more effective integration of the various conservation actions employed, clarify the wording of the CBD targets and provide clearer operational guidance as to how they are to be implemented and their implementation monitored. The role and effectiveness of protected areas in conserving biodiversity and in particular plant species in situ are discussed as are recent proposals for a massive increase of their extent. The need for much greater effort and investment in the conservation or protection of threatened species outside protected areas where most plant diversity occurs is highlighted. The difficulties involved in implementing effective in situ conservation of plant diversity both at an area-and species/population-based level are discussed. The widespread neglect of species recovery for plants is noted and the desirability of making a clearer distinction between species recovery and reintroduction is emphasized. Key messages from a global overview of species recovery are outlined and recommendations made, including the desirability of each country preparing a national species recovery strategy. The projected impacts of global change on protected areas and on species conservation and recovery, and ways of addressing them are discussed.展开更多
随着社会的发展,城市开发建设已发展到综合开发的高级阶段。CBD(Central Business District,译成中文,即“中央商务区”)作为城市综合开发高级阶段的一种表现形式已成为城市建设发展的一种趋势。然而随着“9.11”美国世贸大厦CBD的倒塌...随着社会的发展,城市开发建设已发展到综合开发的高级阶段。CBD(Central Business District,译成中文,即“中央商务区”)作为城市综合开发高级阶段的一种表现形式已成为城市建设发展的一种趋势。然而随着“9.11”美国世贸大厦CBD的倒塌,数千人特别是300多名纽约消防队员的遇难,使得CBD设计中的安全性问题越来越引起人们的关注。本文就CBD设计中的常见的一些安全疏散问题提出与读者探讨。展开更多
文摘Against a background of continuing loss of biodiversity, it is argued that for the successful conservation of threatened plant species we need to ensure the more effective integration of the various conservation actions employed, clarify the wording of the CBD targets and provide clearer operational guidance as to how they are to be implemented and their implementation monitored. The role and effectiveness of protected areas in conserving biodiversity and in particular plant species in situ are discussed as are recent proposals for a massive increase of their extent. The need for much greater effort and investment in the conservation or protection of threatened species outside protected areas where most plant diversity occurs is highlighted. The difficulties involved in implementing effective in situ conservation of plant diversity both at an area-and species/population-based level are discussed. The widespread neglect of species recovery for plants is noted and the desirability of making a clearer distinction between species recovery and reintroduction is emphasized. Key messages from a global overview of species recovery are outlined and recommendations made, including the desirability of each country preparing a national species recovery strategy. The projected impacts of global change on protected areas and on species conservation and recovery, and ways of addressing them are discussed.
文摘随着社会的发展,城市开发建设已发展到综合开发的高级阶段。CBD(Central Business District,译成中文,即“中央商务区”)作为城市综合开发高级阶段的一种表现形式已成为城市建设发展的一种趋势。然而随着“9.11”美国世贸大厦CBD的倒塌,数千人特别是300多名纽约消防队员的遇难,使得CBD设计中的安全性问题越来越引起人们的关注。本文就CBD设计中的常见的一些安全疏散问题提出与读者探讨。
