Northern Territory. Department of Lands, Planning and the Environment,
Collection
E-Publications,
E-Books,
PublicationNT,
8/2001,
Date
2011-06,
Abstract
The mapping of forests incorporates the collection of field data such as canopy cover, foliage cover, crown type, average strata height, dominant vegetation species, basal area and stem density, and often utilises remotely sensed data, typically air photos and more recently satellite imagery. Landsat TM satellite imagery cannot be used to measure canopy cover with any accuracy, but can be used to measure the amount of green vegetation on the ground. Foliage Projective Cover (FPC) “is the percentage of the sample site occupied by the vertical projection of foliage only” (Walker and Hopkins 1998 :66). Previous work with NT vegetation and data from this study shows that the lower limit of 20% canopy cover for forests is roughly equal to 12% FPC, and this FPC value is used as the lower limit for forests in this study (see Table 1).
This report looks at the methods used by the NT to collect ground data, classify Landsat 5 TM satellite imagery with respect to foliage projective coverage, and produce a forest cover map.,
Notes
Made available via the Publications (Legal Deposit) Act 2004 (NT).,
Table of contents
Document 1: Acknowledgements -- Study Area -- Methodology - Site locations, Field survey, Road notes -- Image processing - TM Imagery, Digital mask, Training sites, Supervised classification -- Results -- Discussion -- Review of methodology -- References -- Appendices 1-7,
Document 2: Acknowledgements -- Introduction - General, Background - Field survey and indexing -- Forest attribute method - Overview, Amalgamating individual bio-geographic regions, Attributing -- Results - PFC region, PFC reliability/accuracy, Forest areas NTFORESTYPE grid, Review of procedure, Forest attribute coverage -- References -- Appendix 1.,