Soil Compaction Impacts in Forest Ecosystems
Summary
Soil compaction in forest ecosystems arises chiefly from the passage of heavy machinery during harvesting, thinning and other management operations. Increased load on the soil surface compresses pore spaces, elevating bulk density and reducing porosity. These physical changes impede water infiltration and gas exchange, leading to enhanced surface runoff, impaired root penetration and reduced water availability for trees. Compaction also alters soil thermal regimes and exacerbates erosion on steep slopes. The diminished pore network restricts microbial activity and nutrient cycling, undermining carbon sequestration and soil fertility. Effects vary with soil texture, moisture at the time of traffic, machine type and terrain gradient. While coarse‐textured soils may recover more rapidly, fine‐textured and clayey soils often retain a compacted layer or hardpan for decades, influencing the overlying topsoil through persistent moisture retention and nutrient accumulation. Given the global extent of mechanised forestry, understanding and mitigating soil compaction is essential for sustaining productivity, biodiversity and climate‐regulating services in forested landscapes.
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Soil Compaction Impacts in Forest Ecosystems publication trend
The graph below shows the total number of articles in soil compaction impacts in forest ecosystems across all publications each year (not limited to Nature Index journals).
Technical terms
Bulk density: Mass of dry soil per unit volume, indicative of compaction severity.
Porosity: Proportion of soil volume occupied by voids, governing water and air flow.
Penetration resistance: Force required to drive a probe into soil, reflecting its mechanical strength.
Skid trail: Designated track used by forestry machinery, often subject to high compaction.
Hydraulic conductivity: Rate at which water moves through soil pores, affected by compaction.
References
- Impacts of a fully mechanized timber harvesting system on soil physical properties after a pronounced dry period. Soil and Tillage Research (2025).
- Soil compaction in skid trails still affects topsoil recovery 28 years after logging in Central Amazonia. Geoderma (2023).
- Severity of topsoil compaction controls the impact of skid trails on soil ecological processes. Journal of Applied Ecology (2024).
- Impact of mechanized harvesting on compaction of sandy and clayey forest soils: results of a meta-analysis. Annals of Forest Science (2012).
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