Comparison of Intensity Analysis and the land use dynamic degrees to measure land changes outside versus inside the coastal zone of Longhai, China

Authors: Huang Jinliang, Coastal and Ocean Management Institute, Xiamen University, Huang Boqiang*, Coastal and Ocean Management Institute, Xiamen University, Robert Gilmore Pontius Jr, Graduate School of Geography, Clark University
Topics: Land Use and Land Cover Change
Keywords: Land change; Urbanization; Intensity Analysis; Land use dynamic degree; Pattern; Coastal area
Session Type: Poster
Day: 4/13/2018
Start / End Time: 5:20 PM / 7:00 PM
Room: Napoleon Foyer/Common St. Corridor, Sheraton, 3rd Floor
Presentation File: No File Uploaded


We compare two popular methods to quantify temporal change among categories: 1) Intensity Analysis and 2) the land use dynamic degrees. We apply the methods to measure land change both inside and outside the coastal zone of Longhai, which is a typical county-level coastal city in Southeast China. The maps show eight categories at four time points: 1986, 1996, 2002, and 2010. Intensity Analysis shows graphically the size and the intensity of gross change at three increasingly detailed hierarchical levels in a manner that facilitates interpretation. In contrast, the comprehensive land use dynamic degree (CLUDD) has no practical interpretation because the CLUDD is the sum of loss intensities of categories that have different sizes. The single land use dynamic degree gives the annual net change as a percentage of the initial size of the category, which offers limited information because the single degree: 1) fails to reveal simultaneous gross loss and gross gain of a category, 2) does not indicate how each category contributes to total change, 3) is sensitive to the category’s initial size, and 4) reveals neither the size of the category’s net change nor the size of the category’s initial size.

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