青藏铁路野生动物通道有效性分析

青藏高原野生动物种类独特。青藏铁路的建设,人为阻断了野生动物的迁徙和转移路径,特别是阻断了国家Ⅰ级重点保护动物——藏羚每年大规模往返迁徙的路径。为了沟通被分割的高原生境和野生动物迁徙路径,青藏铁路全线设置了桥梁下方、缓坡平交和隧道上方三种类型33处野生动物通道。2004年-2007年对野生动物通道的监测数据表明,三种类型的通道对沿线野生动物种群交流均起到了积极的作用。藏羚等野生动物已逐步熟悉和利用通道,并且对其利用率逐年上升,监测中未发现有藏羚迁徙被铁路阻隔的现象。

Validity Analysis on Animal Passages along Qinghai-Tibet Railway

Animals in Qinghai -Tibet plateau are distinctive. Their migratory and moving routes, especially the annually and cosmically migration routes of Tibetan antelopes, state protective animals of level I , were interdicted by Qinghai - Tibet railway built newly. In order to connect the intersected environment and animal migratory routes, thirty three animal passages had been set along Qinghai - Tibet railway, divided into three types such as bridge, tempered roadbed and tunnel. According to the monitor log from 2004 to 2007, the three types of animal passage played important roles in animal communication through the railway. Animal passages had been known well by animals such as Tibetan antelopes, and their efficiency of being used increased year after year. No Tibetan antelope had been found interdicted by Qinghai -Tibet railway during migration.