甘肃安西极旱荒漠国家级自然保护区植被类型变化比较

Comparison of Vegetation Types Changes in Hyperarid Desert of Gansu's Anxi National Nature Reserve

安西极旱荒漠国家级自然保护区位于甘肃省河西走廊西段的安敦盆地,为极旱荒漠区,植被类型变化是反映荒漠区生态变化的重要指标。第3期科学考察植被类型调查结果显示,在前2期调查基础上,保护区新增1个植被型和18个群系。比较结果表明,10年来,保护区植被类型随生态环境发生一定变化。

Anxi National Nature Reserve is located at the hyperarid desert of Andun basin, western Hexi Corridor, Gansu province. The change of vegetation type is an important indicator reflecting the ecological changes in the desert area. The results of the third scientific investigation on vegetation type indicate that there are a new vegetation type and 18 formations compared with the previous two surveys. The comparison results show that the vegetation types of the reserve have changed with the ecological environment in ten years.