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.
|Number of pages||9|
|Journal||IEEE Transactions on Geoscience and Remote Sensing|
|Publication status||Published - Nov 2005|
|MoE publication type||A1 Journal article-refereed|
- Leaf area index (LAI)
- Satellite applications
- Synthetic aperture radar (SAR)