Ecology | Asitis EN

Ecology

Aerial view of a dense forest canopy, showing a mosaic of tree crowns in varying shades of green.

How satellite data help evaluate forest condition and anticipate future risks

Lenka Foltýnová

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Why forests can look healthy while silently losing value?

Productivity map of an urban green area analyzed using UpGreen, showing the spatial variation in tree performance and vitality based on photosynthetic activity. The color-coded grid reflects productivity levels: • Very high to high (dark green) indicates healthy, actively growing trees with strong ecosystem function • Moderate (light green) represents stable but not optimal performance • Low to very low (pink shades) highlights trees with reduced vitality and limited growth • None (red) marks areas with minimal or no functional productivity, such as heavily stressed, damaged, or missing trees The map shows that most of the area maintains moderate to high productivity, suggesting generally functioning vegetation. However, scattered clusters of low and very low productivity indicate localized decline or suboptimal conditions.

Connecting the Dots: How Climate Impact Chains Help Cities See

Infographic illustrating the concept of Climate Impact Chains — showing how climate hazards (such as heatwaves or drought) trigger cascading impacts on urban systems, health, and the environment. The visual reflects ASITIS’s data-driven approach to understanding climate risks and supporting adaptation strategies for cities and regions.

Seeing the unseen: how near-infrared imagery transforms vegetation management

A satellite image of an urban area with trees automatically detected and outlined in red. The image illustrates an urban greenery segmentation process using near-infrared (NIR) and RGB data to classify vegetation. The segmentation highlights individual tree canopies, emphasizing the distribution of green spaces in a residential neighborhood. A text panel on the right explains the role of NIR in identifying vegetation and how spatial classification is applied to detect trees.

3-30-300 and UpGreen: Nature-Based Solutions for Greener, Resilient Cities

map layer of buildings with the attribute of value (yes/no) for rule 3 of 3-30-300

Using Climate Impact Chains (CICs) to strenghthen urban resilience

Visual representation of a climate impact chain showing the sequence from climate hazards, such as flooding or extreme weather, to various urban impacts. Icons depict affected elements like buildings, infrastructure, transportation, and public health. Arrows connect each stage, illustrating the progression from exposure to sensitivity and adaptive capacity. The image highlights the interconnected impacts of climate events on urban systems, aligning with the blog's focus on using Climate Impact Chains (CICs) for understanding and enhancing urban resilience."

UpGreen at URBIS24

Map showing urban tree vitality, stress and resilience levels aggregated by street segments using satellite based analysis

Exploring how small bodies of water prevent hydrometeorological extremes

malé vodní plochy

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