通过构建青藏高原生态安全评价指标体系和评价方法,测算了2015—2021年青藏高原森林、草原、湿地、雪域和荒漠生态系统的生态安全指数、状态和压力指数。结果表明,青藏高原生态安全等级均处于0.6~0.8之间,生态安全性较高,且西藏生态安全指数高于青海。提出了青藏高原森林、草原、湿地、雪域和荒漠生态系统生态安全提升路径,以及保障青藏高原生态安全的策略。

By constructing the evaluation indicator system and evaluation method of ecological security,the ecological security index,state and pressure indicators of forest,grassland,wetland,snow area and desert ecosystems of the Qinghai-Tibet Plateau from 2015 to 2021 were calculated.The results showed that the ecological security level of the Qinghai-Tibet Plateau was between 0.6 and 0.8,and the ecological security index of Tibet was higher than that of Qinghai.Based on this,the paths to improve the ecological security of the forest,grassland,wetland,snow area and desert ecosystems on the Qinghai-Tibet Plateau were put forward,also the strategy to ensure the ecological security of the Qinghai-Tibet Plateau was pointed out.