Carbon balance of sandy loam soils in arid landscapes of the Chechen Republic

Rustam Gakaev,O.Y Patlasov

doi:10.1051/bioconf/20224202005

Abstract

The spatial variability of the stability of soil aggregates and its relationship with runoff and soil erosion were studied in a semi-arid environment in the field in order to assess the validity of the stability of structures as an indicator of soil erosion in soils of sandy loam ridges. The influence of soil and relief properties on the variability of aggregate stability was also investigated. Significant relationships were found in the number of water droplets required to break down the aggregate, as well as the rate of runoff and erosion. The most significant correlation was found between the number of droplet impacts and the soil organic matter content. The stability of aggregates in the upper soil layer is apparently a valuable indicator of field runoff and inter-season soil erosion of sandy loamy ridges in semi-arid conditions.

Highlights

The mountainous landscapes of the region represent the northern slope of the Main Caucasian ridge with its continuous orographic network
Since 2003, almost 4 billion tons of aboveground biomass carbon (ABC) have been stored in the Chechen Republic from tree planting, which is 25% of its annual emissions from fossil fuels
The rest can interact with soil moisture: high partial pressure of CO2 forms dissolved inorganic carbon (DIC), which later combines with divalent cations and precipitates as soil carbonate within the unsaturated zone (USZ) [4]

Summary

Introduction

The mountainous landscapes of the region represent the northern slope of the Main Caucasian ridge with its continuous orographic network. It investigates a proposal to capture atmospheric carbon dioxide through afforestation in semi-arid regions as inorganic soil carbonate below. CO2 released through roots, combined with bacterial oxidation of soil organic matter, can create a partial pressure of CO2 in the soil several orders of magnitude higher than in the overlying ambient atmosphere. The rest can interact with soil moisture: high partial pressure of CO2 forms dissolved inorganic carbon (DIC), which later combines with divalent cations and precipitates as soil carbonate within the USZ [4]. The pedogenic carbonate formed at the USZ and bicarbonate (DIC) together contain sequestered inorganic carbon

Calculation of the carbon balance of soil ecosystems

Results and Discussions

Conclusions