Remote sensing and GIS-based desert ecosystem red directory assessment method

The invention discloses a remote sensing and GIS-based desert ecosystem red directory assessment method, and belongs to the technical field of biodiversity protection. The method comprises the following steps of: (a) constructing a desert ecosystem classification system; (b) dividing desert ecosystem evaluation vegetation formations; (c) establishing a desert ecosystem threat level assessment standard; (d) calculating a desert ecosystem threat assessment index; (e) dividing desert ecosystem threat levels; and (f) constructing a desert ecosystem red directory. According to the method, rapid desert ecosystem red directory threat level assessment is realized, directories are combined with spatial information of habitat patch degradation so as to provide basis for protection and management oflarge-scale ecosystems, and the problems that ecosystem classification in the existing ecosystem red directory division process is difficult to unify, assessment basic units are difficult to determine, the ecosystem change pr