DOI: 10.5061/dryad.2fqz61336
title: Aridity drives the response of soil organic carbon and inorganic carbon to drought in cropland

description: This global dataset compiles paired measurements of soil organic carbon
 (SOC) and soil inorganic carbon (SIC) from cropland soils, with both
 components present (non-zero). Each soil profile is geo-referenced and
 classified by aridity type (arid, semi-arid, sub-humid, humid) and
 irrigation type (rainfed or irrigated). The dataset enables analysis of
 SOC–SIC relationships across climatic gradients and under different
 management regimes. Data are organized in a tabular format with fields
 including depth, SOC, SIC, aridity index, irrigation status, and basic
 soil properties. It provides a valuable resource for investigating the
 interplay between organic and inorganic carbon in croplands, assessing the
 influence of aridity and irrigation on soil carbon dynamics, and improving
 global carbon modeling. All records were obtained from open-access or
 authorized sources, with no ethical or personal information involved.
description: # Aridity drives the response of soil organic carbon and inorganic carbon
 to drought in cropland Dataset DOI:
 [10.5061/dryad.2fqz61336](https://doi.org/10.5061/dryad.2fqz61336) ##
 Description of the data and file structure This dataset was compiled to
 investigate the relationships between soil organic carbon (SOC) and soil
 inorganic carbon (SIC) in global cropland soils under varying climatic and
 management conditions. Data were collected from published studies,
 open-access databases, and authorized contributors, focusing on soil
 profiles where both SOC and SIC contents were measured and non-zero. Each
 record represents a soil profile or horizon with associated metadata,
 including sampling depth, SOC and SIC contents, aridity classification
 (arid, semi-arid, sub-humid, humid), and irrigation type (rainfed or
 irrigated). Additional soil properties such as bulk density are included
 where available. The dataset supports analyses of how aridity gradients
 and irrigation practices influence the balance and interaction between SOC
 and SIC in croplands, contributing to improved understanding and modeling
 of soil carbon dynamics under changing environmental and management
 conditions. ### Files and variables #### File: data.xlsx
 **Description:**  A dataset compiles paired measurements of soil organic
 carbon (SOC) and inorganic carbon (SIC) from cropland. ##### Variables *
 Profile_id: Unique identifier for a soil profile (a vertical sequence of
 soil layers at one sampling location) * date: Year the soil sample was
 collected * soil_layer: Depth interval of the sampled soil layer *
 BD: Mass of dry soil per unit volume. Indicates soil compaction (g/cm³) *
 Cfvo (Coarse Fragment Volume): Volume percentage of coarse fragments
 (&gt;2 mm), such as gravel and stones (%) * SIC_content (Soil Inorganic
 Carbon Content) (g/kg) * SOC_content (Soil Organic Carbon Content) (g/kg)
 * Drought: Climate/aridity classification of the sampling location *
 dataset: sample dataset * country: sample country ## Access information
 Other publicly accessible locations of the data: * Article: Size,
 distribution, and vulnerability of the global soil inorganic carbon &
 Dataest: the World Soil Information Service (WoSIS). Data was derived from
 the following sources: * None