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Updated: Mar 22, 2026

Use of Principal Components for Scaling Up Topographic Models to Map Soil Redistribution and Soil Organic Carbon

Use of Principal Components for Scaling Up Topographic Models to Map Soil Redistribution and Soil Organic Carbon

Published on: October 16, 2018

Deforestation Induced Climate Change: Effects of Spatial Scale.

Patrick Longobardi^1,2, Alvaro Montenegro^3,1,4, Hugo Beltrami^1,2

¹Climate & Atmospheric Sciences Institute (CASI), St. Francis Xavier University, Antigonish, NS, Canada.

|April 22, 2016

Summary

This summary is machine-generated.

Deforestation impacts global climate, with high latitude forest loss cooling the planet and low latitude loss causing warming. Some high latitude deforestation can even decrease atmospheric CO2 by increasing soil carbon.

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Area of Science:

Climate science
Ecology
Earth system science

Background:

Deforestation alters atmospheric CO2, surface energy, and mass balances, influencing climate.
Previous models of large-scale deforestation suggest latitude-dependent surface air temperature (SAT) responses: cooling at high latitudes, warming at low latitudes, and mixed at mid-latitudes.

Purpose of the Study:

To investigate the effects of varying deforestation fractions (5% to 100%) on climate.
To examine SAT and soil moisture responses to deforestation across different latitudes.
To determine the impact of deforestation on atmospheric CO2 and soil carbon dynamics.

Main Methods:

Utilized a global climate model to simulate deforestation.
Applied fractional deforestation scenarios (5% to 100%) in high, mid, and low latitude regions.
Analyzed changes in surface air temperature, soil temperature, soil moisture, and net primary productivity.

Main Results:

High latitude deforestation consistently reduced global mean SAT; low latitude deforestation increased it.
Deforested areas generally became drier with lower SAT, though soil temperatures rose in mid and low latitudes.
High latitude deforestation (≥45%) led to increased soil carbon and a net decrease in atmospheric CO2 due to enhanced net primary productivity and colder, drier conditions.

Conclusions:

Deforestation's climate impact is complex and latitude-dependent.
Fractional deforestation analysis refines understanding of SAT and hydrological cycle responses.
Significant high latitude deforestation can potentially sequester atmospheric carbon, highlighting intricate land-atmosphere-carbon cycle interactions.