Estimation of forest properties in a treeline zone using TanDEM-X and airborne laser scanning data

The high-latitude forest-tundra transitional zone is a region which is highly vulnerable to the current Arctic warming. The local changes accompanying expected northward migration of the treeline requires systematic monitoring. We focus on an area in the east of the Mackenzie Delta in Northwest Terr...

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Bibliographic Details
Main Authors: Antonova, Sofia, Höfle, Bernhard, Thiel, Christian, Marx, Sabrina, Anders, Katharina, Helm, Veit, Boike, Julia
Format: Conference Object
Language:unknown
Published: Laboratoire EDYTEM - UMR5204 Université Savoie Mont Blanc 2018
Subjects:
Arctic
Canada
Mackenzie Delta
Northwest Territories
Tundra
Online Access:https://epic.awi.de/id/eprint/47562/
https://hal.archives-ouvertes.fr/hal-01816115/document
https://hdl.handle.net/10013/epic.abf71925-2556-47b4-bf56-cf74a08a0fb2
Description
Summary:The high-latitude forest-tundra transitional zone is a region which is highly vulnerable to the current Arctic warming. The local changes accompanying expected northward migration of the treeline requires systematic monitoring. We focus on an area in the east of the Mackenzie Delta in Northwest Territories, Canada, which is characterised by patches of black spruce forest. We investigate the capability of TerraSAR-X / TanDEM-X bistatic constellation for the characterisation of these forest patches. Interferometric phase and coherence from seven image pairs were used to estimate tree height and density. We compare the SAR products with standard vegetation metrics from airborne LiDAR, such as vegetation height percentiles and vegetation ratio. The preliminary analysis shows a high agreement between SAR and LiDAR data.

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