Jussi Baade
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View article: A Comparison of Tree Segmentation Methods for Savanna Tree Extraction from TLS Point Clouds
A Comparison of Tree Segmentation Methods for Savanna Tree Extraction from TLS Point Clouds Open
Detecting trees accurately from terrestrial laser scanning (TLS) point clouds is crucial for processing terrestrial LiDAR data in individual tree analyses. Due to the heterogeneity of savanna ecosystems, our understanding of how various se…
View article: Itinerários do Luteranismo em Santa Catarina e no Paraná
Itinerários do Luteranismo em Santa Catarina e no Paraná Open
View article: Quantifying Tree Structural Change in an African Savanna by Utilizing Multi-Temporal TLS Data
Quantifying Tree Structural Change in an African Savanna by Utilizing Multi-Temporal TLS Data Open
Structural changes in savanna trees vary spatially and temporally because of both biotic and abiotic drivers, as well as the complex interactions between them. Given this complexity, it is essential to monitor and quantify woody structural…
View article: Land Degradation's Influence on Livelihoods of Small‐Scale Farmers and Land Care Workers in Ladybrand, South Africa
Land Degradation's Influence on Livelihoods of Small‐Scale Farmers and Land Care Workers in Ladybrand, South Africa Open
Land degradation influences the natural resource‐based livelihoods of agricultural communities whose livelihoods are dependent on the productivity of the land. South Africa has been and still is considerably affected by land degradation wh…
View article: Sensitivity of joint atmospheric-terrestrial water balance simulations to soil representation: Convection-permitting coupled WRF-Hydro simulations for southern Africa
Sensitivity of joint atmospheric-terrestrial water balance simulations to soil representation: Convection-permitting coupled WRF-Hydro simulations for southern Africa Open
View article: Individual Tree-Scale Aboveground Biomass Estimation of Woody Vegetation in a Semi-Arid Savanna Using 3D Data
Individual Tree-Scale Aboveground Biomass Estimation of Woody Vegetation in a Semi-Arid Savanna Using 3D Data Open
Allometric equations are the most common way of assessing Aboveground biomass (AGB) but few exist for savanna ecosystems. The need for the accurate estimation of AGB has triggered an increase in the amount of research towards the 3D quanti…
View article: Observational Support for Regional Policy Implementation: Land Surface Change Under Anthropogenic and Climate Pressure in SALDi Study Sites
Observational Support for Regional Policy Implementation: Land Surface Change Under Anthropogenic and Climate Pressure in SALDi Study Sites Open
South Africa is a vast, very diverse and dynamic country experiencing rapidly changing demands for the utilization of its natural resources. At the same time, global climate change and related processes affect the land’s agricultural utili…
View article: Soil Erosion Research and Soil Conservation Policy in South Africa
Soil Erosion Research and Soil Conservation Policy in South Africa Open
Soil erosion has been identified as an issue in South African farming for more than a century. Erosion of land surfaces by water or wind is a natural process which might be accelerated directly by human impact on land surface properties, e…
View article: Regional Land–Atmosphere Interactions in Southern Africa: Potential Impact and Sensitivity of Forest and Plantation Change
Regional Land–Atmosphere Interactions in Southern Africa: Potential Impact and Sensitivity of Forest and Plantation Change Open
Southern Africa is experiencing increasing land transformation and natural vegetation losses. Deforestation is one type of this land degradation where there are indigenous forests present, and afforestation of other nature ecosystems with …
View article: A New Era of Earth Observation for the Environment: Spatio-Temporal Monitoring Capabilities for Land Degradation
A New Era of Earth Observation for the Environment: Spatio-Temporal Monitoring Capabilities for Land Degradation Open
Land degradation can be defined as a persistent reduction or loss of the biological and economic productivity resulting from climatic variations and human activities. To quantify relevant surface changes with Earth observation sensors requ…
View article: Impact of alternative soil data sources on the uncertainties in simulated land-atmosphere interactions
Impact of alternative soil data sources on the uncertainties in simulated land-atmosphere interactions Open
View article: Soil loss by water erosion assessment uncertainties – experiences from South Africa
Soil loss by water erosion assessment uncertainties – experiences from South Africa Open
The Universal Soil Loss Equation (USLE) was initially developed to support the implementation of conservation measures to minimize soil loss by water erosion, i.e. sheet and rill erosion, on a local scale and in the context of agricultural…
View article: Accounting for Deciduous Forest Structure and Viewing Geometry Effects Improves Sentinel-1 Time Series Image Consistency
Accounting for Deciduous Forest Structure and Viewing Geometry Effects Improves Sentinel-1 Time Series Image Consistency Open
Microwave scattering from forests generates pixel geolocation shifts in Synthetic aperture radar (SAR) data that require an adequate representation within digital elevation models (DEM) for preprocessing. We analyze the impact of DEM prope…
View article: Reservoir siltation mapping uncertainties – experiences from South Africa
Reservoir siltation mapping uncertainties – experiences from South Africa Open
<p>Mapping reservoir siltation is an often-used method for assessing sediment yield and soil erosion from catchments. An advantage of this approach is that measurements can potentially provide mean values that represent timeframes of…
View article: Presentation of a high-resolution present-day joint atmosphere-land surface-hydrology simulation dataset for South Africa
Presentation of a high-resolution present-day joint atmosphere-land surface-hydrology simulation dataset for South Africa Open
<p>Due to the high variability of climate variables under climate change, the assessment of the climate impacts on water management, ecosystems restoration, as well as climate change adaptation requires very detailed climate informat…
View article: Monitoring of Radial Deformations of a Gravity Dam Using Sentinel-1 Persistent Scatterer Interferometry
Monitoring of Radial Deformations of a Gravity Dam Using Sentinel-1 Persistent Scatterer Interferometry Open
Dams have many important socio-economic functions, fulfilling roles ranging from storing water to power generation, but also serving as leisure areas. Monitoring of their deformation is usually performed using time-consuming traditional te…
View article: The first sub-meter resolution digital elevation model of the Kruger National Park, South Africa
The first sub-meter resolution digital elevation model of the Kruger National Park, South Africa Open
The use of digital elevation models has proven to be crucial in numerous studies related to savanna ecosystem research. However, the insufficient spatial resolution of the chosen input data is often considered to be a limiting factor when …
View article: Spatio-Temporal Mixed Pixel Analysis of Savanna Ecosystems: A Review
Spatio-Temporal Mixed Pixel Analysis of Savanna Ecosystems: A Review Open
Reliable estimates of savanna vegetation constituents (i.e., woody and herbaceous vegetation) are essential as they are both responders and drivers of global change. The savanna is a highly heterogenous biome with high variability in land …
View article: Using Sentinel-1 and Sentinel-2 Time Series for Slangbos Mapping in the Free State Province, South Africa
Using Sentinel-1 and Sentinel-2 Time Series for Slangbos Mapping in the Free State Province, South Africa Open
Increasing woody cover and overgrazing in semi-arid ecosystems are known to be the major factors driving land degradation. This study focuses on mapping the distribution of the slangbos shrub (Seriphium plumosum) in a test region in the Fr…
View article: Development of earth observation data cubes for monitoring land degradation processes in South Africa
Development of earth observation data cubes for monitoring land degradation processes in South Africa Open
<p>Global biodiversity and ecosystem services are under high pressure of human impact. Although avoiding, reducing and reversing the impacts of human activities on ecosystems should be an urgent priority, the loss of biodiversity con…
View article: Evaluating the role of soil physical properties on simulated land-atmosphere interactions over South Africa using coupled atmosphere-hydrological modeling
Evaluating the role of soil physical properties on simulated land-atmosphere interactions over South Africa using coupled atmosphere-hydrological modeling Open
<p>Land degradation with its direct impact on vegetation, surface soil layers and land surface albedo, has great relevance with the climate system. Assessing the climatic and ecological effects induced by land degradation requires a …
View article: Earth Observation Strategies for degradation monitoring in South Africa with Sentinels &#8211; Results from the SPACES 2 SALDi-project&#160;
Earth Observation Strategies for degradation monitoring in South Africa with Sentinels – Results from the SPACES 2 SALDi-project  Open
<p>The project ‘South African Land Degradation Monitor (SALDi)’ contributes to the German-South African Science Program SPACES by addressing the dynamics and functioning of multi-use landscapes with respect to lan…
View article: Land degradation in savanna environments - assessments, dynamics and implications
Land degradation in savanna environments - assessments, dynamics and implications Open
<p>Land degradation is a human-induced process deteriorating ecosystem functioning and services including soil fertility or biological productivity and, usually, it is accompanied by a loss of biodiversity. Land degradation causes on…
View article: South African Land Degradation Monitor (SALDI) &#8211; An overview of recent advancements
South African Land Degradation Monitor (SALDI) – An overview of recent advancements Open
<p>For many decades the problem of land degradation has been an issue in South Africa. This is mainly due to the high variability of the mostly semi-arid climatic conditions providing a challenging environmental setting. Strong popul…
View article: Using Sentinel-1 and Sentinel-2 Time Series for Slangbos Encroachment Mapping in the Free State Province, South Africa
Using Sentinel-1 and Sentinel-2 Time Series for Slangbos Encroachment Mapping in the Free State Province, South Africa Open
<p>Increasing woody cover and overgrazing in semi-arid ecosystems are known to be major factors driving land degradation. During the last decades woody cover encroachment has increased over large areas in southern Africa inducing env…
View article: Terrestrial Laser Scanning for Vegetation Analyses with a Special Focus on Savannas
Terrestrial Laser Scanning for Vegetation Analyses with a Special Focus on Savannas Open
Savannas are heterogeneous ecosystems, composed of varied spatial combinations and proportions of woody and herbaceous vegetation. Most field-based inventory and remote sensing methods fail to account for the lower stratum vegetation (i.e.…
View article: Linking the Remote Sensing of Geodiversity and Traits Relevant to Biodiversity—Part II: Geomorphology, Terrain and Surfaces
Linking the Remote Sensing of Geodiversity and Traits Relevant to Biodiversity—Part II: Geomorphology, Terrain and Surfaces Open
The status, changes, and disturbances in geomorphological regimes can be regarded as controlling and regulating factors for biodiversity. Therefore, monitoring geomorphology at local, regional, and global scales is not only necessary to co…
View article: Woody cover mapping in the savanna ecosystem of the Kruger National Park using Sentinel-1 C-Band time series data
Woody cover mapping in the savanna ecosystem of the Kruger National Park using Sentinel-1 C-Band time series data Open
The savanna ecosystems in South Africa, which are predominantly characterised by woody vegetation (e.g. shrubs and trees) and grasslands with annual phenological cycles, are shaped by ecosystem processes such as droughts, fires and herbivo…
View article: InSAR time series analysis of seasonal surface displacement dynamics on the Tibetan Plateau
InSAR time series analysis of seasonal surface displacement dynamics on the Tibetan Plateau Open
Climate change and the associated rise in air temperature have affected the Tibetan Plateau to a significantly stronger degree than the global average over the past decades. This has caused deglaciation, increased precipitation and permafr…
View article: Monitoring Selective Logging in a Pine-Dominated Forest in Central Germany with Repeated Drone Flights Utilizing A Low Cost RTK Quadcopter
Monitoring Selective Logging in a Pine-Dominated Forest in Central Germany with Repeated Drone Flights Utilizing A Low Cost RTK Quadcopter Open
There is no doubt that unmanned aerial systems (UAS) will play an increasing role in Earth observation in the near future. The field of application is very broad and includes aspects of environmental monitoring, security, humanitarian aid,…