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Related Experiment Video

Updated: May 21, 2025

Monitoring Pedogenic Inorganic Carbon Accumulation Due to Weathering of Amended Silicate Minerals in Agricultural Soils.

Monitoring Pedogenic Inorganic Carbon Accumulation Due to Weathering of Amended Silicate Minerals in Agricultural Soils.

Published on: June 4, 2021

Soil carbon stability regulate carbon dynamics following large-scale afforestation.

Qi Zhang¹, Hanyu Liu¹, Jiale He¹

¹College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China; The Research Center of Recycle Agricultural Engineering and Technology of Shaanxi Province, Yangling, 712100, Shaanxi, China.

Journal of Environmental Management

|March 22, 2025

Summary

Afforestation boosts soil organic carbon (SOC) more in less stable soils, but reduces overall SOC stability. This effect is stronger at higher latitudes, impacting climate change mitigation strategies.

Keywords:

Afforestation Boreal plantation Soil carbon Soil carbon stability

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Area of Science:

Environmental Science
Soil Science
Climate Change Mitigation

Background:

Large-scale afforestation is a key strategy for climate change mitigation.
The impact of afforestation on soil organic carbon (SOC) dynamics is complex and varies with soil properties.
Understanding SOC stability is crucial for predicting carbon sequestration effectiveness.

Purpose of the Study:

To investigate the relationship between pre-afforestation soil organic carbon (SOC) stability and SOC increments (ΔSOC) following afforestation.
To evaluate the geographical variations in SOC response to afforestation in northern China.
To elucidate the mechanisms driving SOC stability changes after afforestation.

Main Methods:

Paired sampling of farmland and afforestation sites across northern China.
Analysis of soil organic carbon (SOC) stability and SOC increments (ΔSOC).
Assessment of geographical and climatic influences on SOC dynamics.

Main Results:

Soils with initially lower SOC stability showed greater SOC increments after afforestation.
Afforestation in less stable soils led to a decrease in SOC stability.
The positive effect of less stable soils on ΔSOC was more pronounced at higher latitudes and in topsoil.

Conclusions:

Pre-afforestation SOC stability is a critical factor in determining the success of afforestation for carbon sequestration.
Afforestation strategies must consider baseline soil conditions for accurate climate change mitigation predictions.
Higher latitudes and colder climates alter the mechanisms of SOC accumulation and stability post-afforestation.