(Article of periodic en Anglais - 2014)

Document title

Terrestrial surface-area increment : the effects of topography, DEM resolution, and algorithm

Authors(s) and Affiliation(s)

YING L.-X. (1) ; SHEN Z.-H. (1) ; PIAO S.-L. (1) ; LIU Y. (2) ; MALANSON G.P. (3) ;
(1) Dept. of Ecology, College of Urban & Environmental Sciences, The Key Lab. of Ministry of Education for Earth Surface Processes, Peking Univ., Beijing, CHINE
(2) Inst. of Remote Sensing and GIS, Peking Univ., Beijing, CHINE
(3) Dept. of Geographical & Sustainability Sciences, Iowa Univ., Iowa City, ETATS-UNIS


To examine the effects of topography and data resolution on surface area calculation, the AA. calculated incremental area coefficients (IACs), based on 2 different algorithms, for a DEM of China at a series of spatial resolutions. Sampling the DEM with a regional network of 50 km x 50 km cell size, they explored the relationships among the 2 IACs and topographic features. Between the IACs there was a linear relationship that varied with DEM resolution. For a specific type of geomorphology, a threshold resolution of DEM can be determined, below which the surface-area increment (i.e., IAC) is negligible. The results provided the first comprehensive estimate of the contributions of the topographic features, DEM resolution, and algorithms for the surface-area increment, and indicated the scale-related properties and potential environmental consequences of topographic heterogeneity in various estimates of natural resources and ecosystem functions when area needs to be taken into account


Article of periodic

published at : Physical geography / ISSN 0272-3646

Editor : Taylor & Francis, Abingdon - ROYAUME-UNI (1980)

Millesime : 2014, vol. 35, no4 [pp. 297-312]

Bibliographic references : 2 p.

Collation : 9 fig., 1 tabl.



INIST-CNRS, Cote INIST : 20106

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1080/02723646.2014.886923

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
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