Detecting landscape changes in the interior of British Columbia from 1975 to 1992 using satellite imagery Public Deposited

http://ir.library.oregonstate.edu/concern/defaults/tm70mv76d

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • To consider the regional scale effects of forest management requires complete and consistent data over large areas. We used Landsat Thematic Mapper and Multispectral Scanner (TM and MSS) imagery to map forest cover and detect major disturbances between 1975 and 1992 for a 4.2 x 106 ha area of interior British Columbia. Forested pixels were mapped into closed conifer, semiopen conifer, deciduous, and mixed forest classes, with further subdivision of the closed conifer type into three age-classes. The image-based estimate of harvested area was similar to an independent estimate from forest inventory data. Changes in landscape pattern from 1975 to 1992 were examined by calculating indices that describe overall landscape pattern and that of conifer and harvested patches in each biogeoclimatic zone. Harvesting affected 8.4% of the forest area outside provincial parks during the 17-year period. Harvested areas were consistently much smaller than conifer patches in all biogeoclimatic zones and had a lower percentage of interior area and perimeter/area ratio. Conifer patch-shape complexity varied between zones; harvested patches had simpler shapes and were similar in all zones. Results indicate that this landscape is only in the early stages of fragmentation, but a similar harvest pattern has been imposed on differing ecological zones.
Resource Type
Date Available
Date Issued
Citation
  • Sachs, D.L., P. Sollins, and W.B. Cohen. 1998. Detecting landscape changes in the interior of British Colombia from 1975-1992 using satellite imagery. Canadian Journal of Forest Research 28(1): 23-36.
Academic Affiliation
Series
Keyword
Rights Statement
Publisher
Language
Replaces
Additional Information
  • description.provenance : Made available in DSpace on 2010-02-15T23:45:49Z (GMT). No. of bitstreams: 1 Sachsetal_98.pdf: 1010339 bytes, checksum: a3307e744df64ffd38d8859fda19f258 (MD5) Previous issue date: 1998-01
  • description.provenance : Submitted by Alison Moldenke (alison.moldenke@oregonstate.edu) on 2010-02-15T22:32:02Z No. of bitstreams: 1 Sachsetal_98.pdf: 1010339 bytes, checksum: a3307e744df64ffd38d8859fda19f258 (MD5)
  • description.provenance : Approved for entry into archive by Caryn Davis(caryn.davis@oregonstate.edu) on 2010-02-15T23:45:49Z (GMT) No. of bitstreams: 1 Sachsetal_98.pdf: 1010339 bytes, checksum: a3307e744df64ffd38d8859fda19f258 (MD5)

Relationships

In Administrative Set:
Last modified: 07/07/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items