Construction method of landscape fragmentation degree model based on multi-scale neighborhood analysis

• Main Authors: QIU DAI, SHA ZONGYAO, FANG HUSHENG
• Format: Patent
• Language: Chinese; English
• Published: 22.10.2021
• Subjects: CALCULATING; COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The invention designs a landscape fragmentation Frag model based on multi-scale neighborhood analysis, and provides a Frag construction method and a Frag change analysis method, and the method comprises the steps: obtaining a land classification coverage raster data product of a research area; according to land coverage classification, calculating similar nearest neighbor distances marked by a given target type pixel by pixel; designing a scale-related landscape breakage index model Frag, and calculating and counting the Frag by using a neighborhood analysis method; and based on a Frag calculation result of the time sequence, performing Frag spatial-temporal change and associated driving factor analysis and scale influence analysis by using a machine learning method. The landscape fragmentation degree spatial-temporal distribution characteristics obtained by using the method can accurately represent the fragmentation distribution condition of the target type landscape from the aspects of scale and structure,