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Updated: Jan 17, 2026
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Development of an Individual-Tree Basal Area Increment Model using a Linear Mixed-Effects Approach
Published on: July 3, 2020
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Scale-dependent controls on forest gaps shaped by large trees and topographic heterogeneity
Jiale Chen1,2, Tommaso Jucker3, Xiaoran Wang2
1State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan, China.
Ecological Applications : a Publication of the Ecological Society of America
|September 22, 2025
Summary
Forest canopy gap patterns are influenced by spatial scale, large trees, and topography. Understanding these scale-dependent drivers is crucial for effective forest management and conservation strategies.
Area of Science:
- Forest Ecology
- Remote Sensing
- Spatial Analysis
Background:
- Forest canopy gap dynamics are complex and influenced by multiple factors.
- The interplay between spatial scale and drivers of gap patterns is not fully understood.
Purpose of the Study:
- To investigate how forest gap patterns (size, number, distribution) vary across spatial scales.
- To quantify the influence of large trees, topography, and soil properties on these gap patterns.
Main Methods:
- Utilized unmanned aerial vehicles (UAVs) to map forest gaps at seven spatial scales (20-400 m).
- Employed ground inventory data to assess the impact of large trees, topography, and soil characteristics.
- Analyzed gap patterns including size, number, and aggregation.
Main Results:
- Gap size and aggregation varied significantly with spatial scale.
- Large trees and topographic complexity were key drivers, with scale-dependent effects.
- Large trees negatively impacted gap size/density at 20m but positively at 100m.
- Topography influenced gap aggregation at small scales and gap size/density at larger scales.
Conclusions:
- Spatial scale is critical for understanding forest dynamics and canopy structure.
- Scale-dependent drivers of gap patterns can inform restoration and conservation.
- Protecting large trees can mitigate gap clustering, maintaining canopy structure and ecosystem resilience.
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