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Forest Structure Characterization in Germany: Novel Products and Analysis Based on GEDI, Sentinel-1 and Sentinel-2 Data

Kacic, Patrick and Thonfeld, Frank and Gessner, Ursula and Kuenzer, Claudia (2023) Forest Structure Characterization in Germany: Novel Products and Analysis Based on GEDI, Sentinel-1 and Sentinel-2 Data. Remote Sensing, 15, pp. 1-27. Multidisciplinary Digital Publishing Institute (MDPI). doi: 10.3390/rs15081969. ISSN 2072-4292.

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Official URL: https://www.mdpi.com/2072-4292/15/8/1969


Monitoring forest conditions is an essential task in the context of global climate change to preserve biodiversity, protect carbon sinks and foster future forest resilience. Severe impacts of heatwaves and droughts triggering cascading effects such as insect infestation are challenging the semi-natural forests in Germany. As a consequence of repeated drought years since 2018, large-scale canopy cover loss has occurred calling for an improved disturbance monitoring and assessment of forest structure conditions. The present study demonstrates the potential of complementary remote sensing sensors to generate wall-to-wall products of forest structure for Germany. The combination of high spatial and temporal resolution imagery from Sentinel-1 (Synthetic Aperture Radar, SAR) and Sentinel-2 (multispectral) with novel samples on forest structure from the Global Ecosystem Dynamics Investigation (GEDI, LiDAR, Light detection and ranging) enables the analysis of forest structure dynamics. Modeling the three-dimensional structure of forests from GEDI samples in machine learning models reveals the recent changes in German forests due to disturbances (e.g., canopy cover degradation, salvage logging). This first consistent data set on forest structure for Germany from 2017 to 2022 provides information of forest canopy height, forest canopy cover and forest biomass and allows estimating recent forest conditions at 10 m spatial resolution. The wall-towall maps of the forest structure support a better understanding of post-disturbance forest structure and forest resilience.

Item URL in elib:https://elib.dlr.de/194753/
Document Type:Article
Title:Forest Structure Characterization in Germany: Novel Products and Analysis Based on GEDI, Sentinel-1 and Sentinel-2 Data
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Kacic, PatrickUNSPECIFIEDhttps://orcid.org/0000-0002-4538-8286UNSPECIFIED
Thonfeld, FrankUNSPECIFIEDhttps://orcid.org/0000-0002-3371-7206134533217
Date:7 April 2023
Journal or Publication Title:Remote Sensing
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
Page Range:pp. 1-27
Publisher:Multidisciplinary Digital Publishing Institute (MDPI)
Keywords:forest, forest structure Germany, canopy height, Global Ecosystem Dynamics Investigation, GEDI, Sentinel-1, Sentinel-2, random forest regression
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Remote Sensing and Geo Research
Location: Oberpfaffenhofen
Institutes and Institutions:German Remote Sensing Data Center > Land Surface Dynamics
Deposited By: Kacic, Patrick
Deposited On:08 May 2023 10:54
Last Modified:16 May 2023 09:29

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