Vector analysis theory on landscape pattern (VATLP).

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Title Vector analysis theory on landscape pattern (VATLP).
Author Zhang, Shuqing; Zhang, Junyan; Li, Fang; Cropp, Roger Allan
Journal Name Ecological Modelling: international journal on ecological modelling and systems ecology
Editor Sven Jorgensen
Year Published 2006
Place of publication Netherlands
Publisher Elsevier BV
Abstract Landscape indices are popular for the quantification of landscape pattern. However, all landscape indices being used so far are scalar quantities, and measure patterns without considering sufficiently the pattern shape and the directionality together. Based on planar characteristics defined in mechanics such as centroid, moment of inertia, product of inertia and principal axes, vector analysis theory on landscape pattern (VATLP) is explored here. Firstly, we establish a coordinate system of centroidal principal axes (CSCPA). Three related new indices including those describing the direction of pattern distribution (patch orientation (PO), vectorial patch orientation (VPO)), and that indicating the shape of patch's equivalent ellipse (eccentric rate (ER)) are deduced. These landscape metrics are then applied to the pattern analysis of the lakes in Qian-an county (the study area), Jilin province, China. The vector-based data sets of the study area come from the National Land Use/Cover Database (NLUCD). The application of the theory help us better understand the pattern formation of the lakes and the related ecological processes that occur on both ends of the major principal axis, e.g., the transportation of energy and materials flow, and the ecological gradients.
Peer Reviewed Yes
Published Yes
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Copyright Statement Copyright 2006 Elsevier. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
Volume 193
Page from 492
Page to 502
ISSN 0304-3800
Date Accessioned 2006-07-13
Language en_AU
Faculty Faculty of Environmental Sciences
Subject PRE2009-Environmental Management and Rehabilitation
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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