Specific biological population elevation acquisition method based on digital elevation model

Abstract

The invention discloses a specific biological population elevation acquisition method based on a digital elevation model (DEM), which is used for solving the problem of low precision of biological population elevation data in the prior art. The method comprises the following steps: after determining a to-be-monitored population and area, constructing a geographic coordinate system and a projectioncoordinate system, dividing vector grids, selecting a to-be-monitored grid meeting a preset condition, laying survey points by taking any one side frame line of the to-be-monitored grid as a startingpoint, and extracting GE elevation data sets corresponding to the survey points from GE; calling an NFGIS database, and collecting a DEM elevation data set; and constructing an elevation regression model according to the GE and DEM elevation data set, and obtaining a DEM correction elevation value. Real-time biological elevation data is collected based on DEM, the DEM data is corrected through GE, elevation distribution changes of specific biological populations are accurately monitored, and an accurate and reliable data source is provided for disease and pest control, environmental evaluation and environmental protection strategy making of the ecological environment.

Description

technical field [0001] The invention belongs to the field of ecological environment state monitoring and information processing, and in particular relates to a method for obtaining the elevation of a specific biological population based on a digital elevation model. Background technique [0002] Normally, the ecological environment is a relatively stable whole. In a period of time, its ecological distribution will be based on a stable state, especially for different elevations in the environment, different biological populations will be vertically distributed stably. At the same time, Corresponding plant populations will also correspond to corresponding animal populations. For example, Mount Kilimanjaro in Africa is vertically distributed as tropical rainforest, savannah, evergreen leaf forest, deciduous maple forest, alpine meadow, alpine desert, and snow-covered glacier. The corresponding animal biota is distributed on the plant biota. The stability of the distribution d...

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