祁连山东端北麓不同降水区对退化草原飞播修复成效的影响

Effects of Different Precipitation Area on Restored Result with AerialSeeding of Degenerated Grasslands in North Slope of QilianMountain Eastern End

为了提高退化草原修复成效,本文研究了祁连山东端北麓不同降水区对飞播修复草地植物数量、质量和多样性的影响。结果表明:海拔2 600 m地带不同降水区地上植物总生物量、高度、盖度、密度和丰富度指数、多样性指数、均匀度指数均随着降水量的增多而增加。除草种萌发率和多样性指数外,降水量450 mm区域的各项指标的增长率均最高,建议此区优先采用飞播修复退化草原。

In order to improve the effectiveness of degraded grassland restoration,this article studied the impact of different precipitation areas on the quantity,quality,and diversity of aerial seeding restored grassland plants in the northern slope of the eastern end of Qilian Mountain.The result showed that the total biomass,height,coverage,density,and richness index,diversity index,evenness index of community on different precipitation area with aerial seeding were increased at 2600 m separately.In addition to the germination rate and diversity index,the increase rate of each index on precipitation area 450 mm were the highest in all precipitation area,It was recommended to prioritize using aerial seeding to restore degraded grasslands in this area.