Please use this identifier to cite or link to this item: http://hdl.handle.net/10174/12622

Title: Estimation with high resolution satellite images: A case study of Quercus rotundifolia
Authors: Sousa, Adélia M. O.
Gonçalves, Ana Cristina
Mesquita, Paulo
Marques da Silva, José R.
Keywords: Quercus rotundifolia
Biomass
Forest inventory
QuickBird image
Issue Date: Mar-2015
Publisher: ISPRS Journal of photogrammetry and Remote Sensing
Citation: Sousa, A. M. O., Gonçalves, A. C., Mesquita, P. and Marques da Silva, J. R. (2015). Estimation with high resolution satellite images: A case study of Quercus rotundifolia. ISPRS Journal of photogrammetry and Remote Sensing, 101: 69–79.
Abstract: Forest biomass has had a growing importance in the world economy as a global strategic reserve, due to applications in bioenergy, bioproduct development and issues related to reducing greenhouse gas emissions. Current techniques used for forest inventory are usually time consuming and expensive. Thus, there is an urgent need to develop reliable, low cost methods that can be used for forest biomass estimation and monitoring. This study uses new techniques to process high spatial resolution satellite images (0.70 m) in order to assess and monitor forest biomass. Multi-resolution segmentation method and object oriented classification are used to obtain the area of tree canopy horizontal projection for Quercus rotundifolia. Forest inventory allows for calculation of tree and canopy horizontal projection and biomass, the latter with allometric functions. The two data sets are used to develop linear functions to assess above ground biomass, with crown horizontal projection as an independent variable. The functions for the cumulative values, both for inventory and satellite data, for a prediction error equal or smaller than the Portuguese national forest inventory (7%), correspond to stand areas of 0.5 ha, which include most of the Q.rotundifolia stands.
URI: http://hdl.handle.net/10174/12622
Type: article
Appears in Collections:ICAAM - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica
ERU - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica

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