University Of Tasmania
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Soares et al_2023_Environ._Res._Commun._10.1088_2515-7620_ad04f5.pdf (981.08 kB)

Drought effects on soil organic carbon under different agricultural systems

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journal contribution
posted on 2023-11-03, 05:05 authored by Pedro Soares, Matthew HarrisonMatthew Harrison, Zahra Kalantari, Wenwu Zhao, Carla Ferreira
Abstract Drought is a natural hazard occurring with increasing frequency due to climate change. Drought events reduce soil water content and also soil organic carbon (SOC) content, with negative impacts on crop development and food security. This study investigates the impact of drought on SOC dynamics in agricultural systems and the influence of water availability and farm management practices in these impacts. The manuscript is a systematic review, based on Scopus database for scoping the literature on the topic. A total of 283 records were retrieved, but only 16 papers were relevant for the review. The main findings are: 1) water plays a key role in regulating SOC mineralization, necessitating further research on water management to mitigate carbon losses during drought; 2) different agricultural systems can have differing impacts on SOC under drought conditions (e.g., pastures are more resilient than arable systems); and 3) SOC loss generally occurs after a drought event, regardless of farm management regime. Best management practices, such as cover cropping and soil amendment, can minimize SOC losses, but further research is required to optimize these practices in counteracting the effect of drought. A better understanding of the effects of drought on SOC dynamics, and of short-term and long-term ways to mitigate these effects, is important to ensure soil health and crop productivity.

Funding

Advanced machine cognition to segregate effects of climate from management at the landscape scale : Department of Industry, Science, Energy and Resources

History

Publication title

Environmental Research Communications

eISSN

2515-7620

ISSN

2515-7620

Department/School

TIA - Research Institute

Publisher

IOP Publishing

Publication status

  • Published online

Rights statement

As the Version of Record of this article is going to be / has been published on a gold open access basis under a CC BY 4.0 licence, this AcceptedManuscript is available for reuse under a CC BY 4.0 licence immediately

Socio-economic Objectives

190302 Management of greenhouse gas emissions from animal production, 180102 Atmospheric composition (incl. greenhouse gas inventory), 260101 Management of gaseous waste from plant production (excl. greenhouse gases), 190101 Climate change adaptation measures (excl. ecosystem), 190102 Ecosystem adaptation to climate change, 190502 Climate variability (excl. social impacts), 190103 Social impacts of climate change and variability

UN Sustainable Development Goals

13 Climate Action, 2 Zero Hunger, 1 No Poverty, 10 Reduced Inequalities, 11 Sustainable Cities and Communities, 12 Responsible Consumption and Production, 15 Life on Land, 9 Industry, Innovation and Infrastructure