生态脆弱区也称生态交错区（Ecotone)，是指两种不同类型的生态系统的交界过度区域。主要特征有：1）系统抗干扰能力弱，2）对全球气候变化敏感，3）时空波动性强，4）边缘效应显著和5）环境异质性高。
元谋干热河谷区气候炎热干燥，植被稀疏，生态环境脆弱。
In Yuanmou dry-hot valley, the Climate is hot and dry, the vegetation is sparse and the ecological environment is fragile.
内蒙古荒漠草原是温带草原中最干旱的一个类型，为草原区自然条件最严酷、草场生产力最低、生态系统最脆弱的一个地区。
As a most drought type in temperate steppe, the desert steppe in Inner Mongolia is a district with harshest natural condition, lowest productivity and weakest ecosystem in steppe districts.
结合新疆实际，建立脆弱生态区评价指标体系。
The evaluation index system of fragile environment, combining with the facts of Xinjiang, was established.
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