SUB-SAHARAN AFRICA

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SUB-SAHARAN AFRICA

机译：撒哈拉以南非洲

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A study by the BirdLife Africa Partnership and RSPB has shown that legal protection is effective in reducing the loss of natural land cover within sites of high conservation importance. When sets of protected and unprotected Important Bird and Biodiversity Areas (IBAs) in Africa were compared it was found that annual rates of loss of natural land cover in protected IBAs was less than half of that in unprotected areas. Rates of loss in 20 km buffer zones around unprotected and protected areas were similar, with no evidence of displacement of conversion within protected areas to their immediate surroundings, termed leakage. The Parties to the Convention on Biological Diversity have agreed to increase total coverage of land in protected areas by 4% by 2020. This could cost c. USD 76 billion annually, and to justify it the effectiveness of protected areas in reducing deleterious land-cover change needs to be quantified.

机译：非洲鸟类生命合作组织和RSPB的一项研究表明，法律保护可有效减少具有高度保护意义的地点内自然土地覆盖物的损失。当比较非洲的保护区和未保护区的重要鸟类和生物多样性区（IBA）时，发现受保护的IBA的自然土地覆盖的年损失率不到未保护区的一半。未保护区和保护区周围20 km缓冲区的损失率相似，没有证据表明保护区内转换到其周围环境的位移被称为泄漏。《生物多样性公约》缔约方已同意到2020年将保护区的土地总覆盖率提高4％。每年需要量化760亿美元，并证明保护区在减少有害的土地覆被变化方面的有效性。

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《Oryx》 |2013年第4期|472-473|共2页
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