溪洛渡水电站对两栖爬行动物多样性影响的预测与保护对策

PREDICTION OF EFFECTS OF XILUODU HYDROPOWER STATION ON THE DIVERSITY OF AMPHIBIANS AND REPTILES AND THEIR CONSERVATION COUNTERMEASURES

采用 β多样性指数和动物地理学方法研究了溪洛渡水电站对两栖爬行动物多样性的影响 .结果表明 ,在海拔 6 0 0m以下淹没区的区系与 6 0 0～ 90 0m区段的区系 ,共有种最多 ,相似性最大 ,隔离与分化最小 ,它们具有较近的生物地理学关系 ;它们与海拔 90 0m以上的区段则有明显差别 .因此 ,保护好海拔 6 0 0～ 90 0m区段的物种多样性成为保护该地物种多样性的关键 ,并可以有效地降低电站的建设对物种多样性的影响 .图 3表 3参

The effects of Xiluodu Hydropower Station on the diversity of amphibians and reptiles were studied using β diversity index and zoogeographical analysis. The results from β diversity and similarity index analysis indicate that in the areas between 300～600 m and 600～900 m, common species are found most with the largest similarity, and lest isolation between them. They are obviously different from those in the areas above 900 m. Furthermore, the zoogeographical analysis shows that the fauna in the areas, of 300～600 m is greatly related to that of 600～900 m. So, the areas of 600～900 m are most important to conserve amphibians and reptiles. Fig 3, Tab 3, Ref 14