Land change dynamics: insights from Intensity Analysis applied to an African emerging city
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Publication Details
Author list: Akinyemi FO, Pontius RG, Braimoh AK
Publisher: Taylor and Francis Group
Place: ABINGDON
Publication year: 2017
Journal: Journal of Spatial Science (1449-8596)
Journal acronym: J SPAT SCI
Volume number: 62
Issue number: 1
Start page: 69
End page: 83
Number of pages: 15
ISSN: 1449-8596
eISSN: 1836-5655
Languages: English-Great Britain (EN-GB)
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Abstract
Land change in Kigali, Rwanda, is examined using Intensity Analysis, which measures the temporal stationarity of changes among categories. Maps for 1981, 2002 and 2014 were produced that show the land categories Built, Vegetated and Other, which is composed mainly of croplands and bare surfaces. Land change accelerated from the first time interval (1981-2002) to the second time interval (2002-2014), as increased human and economic activities drove land transformation. During the first interval, Vegetated showed net loss whereas Built showed net gain, in spite of a small transition directly from Vegetated to Built. During the second interval, Vegetated showed net gain whereas Built showed nearly equal amounts of gross loss and gross gain. The gain of Built targeted Other during both time intervals. A substantial portion of overall change during both time intervals consisted of simultaneous transitions from Vegetated to Other in some locations and from Other to Vegetated in other locations.
Keywords
Analysis, category, Intensity, Land change, stationary, transition, Urbanization
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