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contributions
We contribute to:

The Land System Science Cluster at the Geography Department of the Humboldt-Universität zu Berlin

 

IRI THESys: Integrative Research Institute on Transformations of Human-Environment Systems at Humboldt-Universität zu Berlin


Geomatics Lab

Colloquium SS 2014

internal

WIKI

Lab address book


 

Postal address

Humboldt-Universität zu Berlin
Geography Department
Geomatics Lab

Unter den Linden 6
10099 Berlin

 

Location

Alfred-Rühl-Haus
Rudower Chaussee 16
12489 Berlin

 

Office

Room 2'227
Tel.:  +49 (030) 2093-6905
Fax:  +49 (030) 2093-6848
Email:

Faculty of Mathematics and Natural Sciences - Geomatics

Welcome to the Geomatics Lab!

Lab focus

The Geomatics Lab focuses on a better understanding of coupled human-environment systems based on remote sensing data and geoinformation. Specific interest lies on land use / land cover change and related ecosystem services.

Deforestation Brasilian Amazon Rainforest

Patterns and timing of deforestation (from 1986:light purple - 2011:brown) of the Brasilian Amazon rainforest, based on the analysis of deep time series of Landsat data.


Our methodological foundation is based on advanced remote sensing data analyses. Themes of interest include landscape to sub-continental mapping and monitoring, deep time series analysis and imaging spectroscopy. Our research contributes to the Global Land Project, the EnMAP Core Science Team and the Landsat Science Team.

News

published 14th July 2014

New paper in Global Environmental Change by postdoctoral researcher Daniel Müller et.al.

Regime shifts limit the predictability of land-system change

The paper is a product from the I-REDD+ project. In essence, it challenges the widely held view that land-system changes can be reliably predicted in dynamic tropical landscapes.

We demonstrate how sudden events and gradual changes in underlying drivers caused rapid, surprising and widespread land-system changes in a range of case studies in Southeast Asia. We argue that many of these changes in land systems qualify as regime shifts that were often difficult to anticipate. Therefore, the presence of regime shifts compromises the validity of predictions of future land-system changes. We discuss the implications of regime shifts for long-term initiatives such as REDD that must ensure that carbon investments achieve additionality in emission reductions (the "R" in REDD...). REDD, just like many other schemes of payments for ecosystem services (PES), must therefore account for the substantial knightian uncertainties inherent in future predictions of land-system change.


published 8th July 2014

New paper in Remote Sensing by doctoral researcher Akpona Okujeni

A comparison of advanced regression algorithms for quantifying urban land cover

We evaluate the use of five different advanced regression techniques for quantitative mapping of urban land cover from HyMap data at 3.6 and 9 m. We adopt the concept of synthetically mixed training data (Remote Sensing of Environment, Volume 137, Oct. 2013), which helps to overcome the lack of quantitative training information required for empirical modeling. This paper presents a substantial follow-up study that allows readers to derive valuable knowledge on how to use different machine learning regression techniques. Our paper includes a comprehensive analysis and a thorough discussion of the findings. We highlight the excellent suitability of kernel-based SVR and KRR in combination with synthetically mixed training for quantifying thematically meaningful and spectrally challenging urban categories at multiple spatial scales.

We carried out the regression analyses with the following Toolboxes:

EnMAP-Box - developed at the Geomatics Lab, HU zu Berlin

ARTMO-Toolbox - developed at the Image Processing Laboratory, Universitat de València


 news archive ►►►

 

Upcoming events

published 14th July 2014

We are looking forward to your participation in the Geomatics Colloquium during the winter term 2014/2015 starting in mid October. Until then - enjoy the break!