Method for determining vegetation boundary of alpine grassland and meadow

The invention discloses a method for determining vegetation boundaries of alpine grassland and meadow, and the method comprises the following steps: selecting a data source: obtaining a plant aboveground biomass data set, selecting historical climate data, and selecting an alpine grassland and an alpine meadow as to-be-classified objects; data preprocessing: preprocessing the climate data of the target area; determining a vegetation boundary; identifying a critical climate factor for controlling the dynamic state of the vegetation; calculating a climatic factor threshold according to the screened critical climatic factor and the marginal effect, and reclassifying the alpine grassland and meadow on the ArcGIS based on the climatic factor threshold; and after the non-alpine grassland land type and the alpine meadow land type are removed, the alpine grassland vegetation boundary and the alpine meadow vegetation boundary are determined. The method is high in accuracy, rapid and simple in extraction of the vegetat