Leaf area index estimation of boreal forest using ENVISAT ASAR

Terhikki Manninen*, Pauline Stenberg, Miina Rautiainen, Pekka Voipio, Heikki Smolander

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

45 Citations (Scopus)

Abstract

A method for retrieval of leaf area index (LAI) using ENVISAT Advanced Synthetic Aperture Radar vertical/horizontal (VV/HH) polarization ratio was derived tor boreal forests. Five alternating polarization single-took complex images of the test site were acquired in summer 2003. The swath range from IS1-IS6 was studied. The VV/HH polarization ratio correlated quite well with the ground truth LAI vaines. The mean error of the LAI estimates was 6.27 tor the test site with mixed forest when data from all images and stands were used without separating between species (or swaths). The respective mean LAI estimation error was 0.3 for Norway spruce (Picea abies (L.) Karst.) and 0.07 for Scots pine (Pinus sylvestris L.) dominated stands.

Original languageEnglish
Pages (from-to)2627-2635
Number of pages9
JournalIEEE Transactions on Geoscience and Remote Sensing
Volume43
Issue number11
DOIs
Publication statusPublished - Nov 2005
MoE publication typeA1 Journal article-refereed

Keywords

  • Forestry
  • Leaf area index (LAI)
  • Polarization
  • Satellite applications
  • Synthetic aperture radar (SAR)

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