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Optical Responses On Multiple Spatial Scales For Assessing Vegetation Dynamics - A Case Study For Alpine Grasslands

Rossi, Mattia and Niedrist, Georg and Asam, Sarah and Tonon, Giustino and Zebisch, Marc (2018) Optical Responses On Multiple Spatial Scales For Assessing Vegetation Dynamics - A Case Study For Alpine Grasslands. International Geoscience and Remote Sensing Symposium, IGARSS 2018, 23 – 27 Juli 2018, Valencia, Spanien.

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Abstract

Vegetation growth is highly dynamic over space and time. Especially mountainous vegetation is regionally affected by climatic variability and human impacts. Tracking optical reflectance provides a unique possibility to analyze vegetation across scales from a small plot up to an extensive area. This study compares the NDVI index of grasslands across four different spatial scales during the growing period in 2017. These scales are covered by measurements from (i) ground spectrometer; (ii) station-based reflectance sensors; (iii) fixed installed Phenocam and (iv) Remote Sensing Sentinel-2 MSI images. We compared the reflectance on single points within a grassland and among different grassland sites in order to assess the strengths and weaknesses of each sensor. To this end we use multiple linear regression as well as in-situ collected biomass samples. First results show clear differences in the optical response among scales and in the detectability of management (e.g. fertilization, harvesting) activities.

Item URL in elib:https://elib.dlr.de/121089/
Document Type:Conference or Workshop Item (Poster)
Title:Optical Responses On Multiple Spatial Scales For Assessing Vegetation Dynamics - A Case Study For Alpine Grasslands
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Rossi, Mattiamattia.rossi (at) eurac.eduUNSPECIFIED
Niedrist, Georggeorg.niedrist (at) eurac.eduUNSPECIFIED
Asam, Sarahsarah.asam (at) dlr.dehttps://orcid.org/0000-0002-7302-6813
Tonon, Giustinogiustino.tonon (at) unibz.itUNSPECIFIED
Zebisch, Marcmarc.zebisch (at) eurac.eduUNSPECIFIED
Date:July 2018
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Vegetation Dynamics, Sentinel-2 MSI, Hyperspectral, Phenocam, Sensor Network, Multiscale
Event Title:International Geoscience and Remote Sensing Symposium, IGARSS 2018
Event Location:Valencia, Spanien
Event Type:international Conference
Event Dates:23 – 27 Juli 2018
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Remote sensing and geoscience
Location: Oberpfaffenhofen
Institutes and Institutions:German Remote Sensing Data Center > Land Surface
Deposited By: Asam, Dr. Sarah
Deposited On:01 Aug 2018 19:58
Last Modified:19 Feb 2019 11:32

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