Research Papers

Combining land surface temperature and shortwave infrared reflectance for early detection of mountain pine beetle infestations in western Canada

[+] Author Affiliations
Michael Sprintsin, Jing M. Chen, Peter Czurylowicz

University of Toronto, Department of Geography and Program in Planning, 100 St. George Street, Toronto, Ontario, Canada M5S 3G3. michaelsp@volcani.agri.gov.il; chenj@geog.utoronto.ca; p.czurylowicz@utoronto.ca

J. Appl. Remote Sens. 5(1), 053566 (November 28, 2011). doi:10.1117/1.3662866
History: Received November 30, 2010; Revised October 19, 2011; Accepted November 01, 2011; Published November 28, 2011; Online November 28, 2011
Text Size: A A A

The current mountain pine beetle (Dendroctonus ponderosae Hopkins) outbreak, which began in 1999, continues to be the leading cause of pine tree mortality in British Columbia. Information regarding the location and spatial extent of the current attack is required for mitigating practices and forest inventory updates. This information is available from spaceborne observations. Unfortunately, the monitoring of the mountain pine beetle outbreak using remote sensing is usually limited to the visible stage at which the expansion of the attack beyond its initial hosts is unpreventable. The disruption of the sap flow caused by a blue-staining fungi carried by the beetles leads to: 1. a decrease in the amount of liquid water stored in the canopy, 2. an increase in canopy temperature, and 3. an increase in shortwave infrared reflectance shortly after the infestation. As such, the potential for early beetle detection utilizing thermal remote sensing is possible. Here we present a first attempt to detect a mountain pine beetle attack at its earliest stage (green attack stage when the foliage remains visibly green after the attack) using the temperature condition index (TCI) derived from Landsat ETM+ imagery over an affected area in British Columbia. The lack of detailed ground survey data of actual green attack areas limits the accuracy of this research. Regardless, our results show that TCI has the ability to differentiate between affected and unaffected areas in the green attack stage, and thus it provides information on the possible epicenters of the attack and on the spatial extent of the outbreak at later stages (red attack and gray attack). Furthermore, we also developed a moisture condition index (MCI) using both shortwave infrared and thermal infrared measurements. The MCI index is shown to be more effective than TCI in detecting the green attack stage and provides a more accurate picture of beetle spread patterns.

Figures in this Article
© 2011 Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation

Michael Sprintsin ; Jing M. Chen and Peter Czurylowicz
"Combining land surface temperature and shortwave infrared reflectance for early detection of mountain pine beetle infestations in western Canada", J. Appl. Remote Sens. 5(1), 053566 (November 28, 2011). ; http://dx.doi.org/10.1117/1.3662866


Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.