Impact of agricultural management practices on soil carbon sequestration and its monitoring through simulation models and remote sensing techniques: A review
Agniva Mandal, Atin Majumder, S. S. Dhaliwal, A. S. Toor, Pabitra Kumar Mani, R. K. Naresh, Raj Kumar Gupta, Tarik Mitran
Abstract
Toward an attempt to limit the global warming to 2 °C, there has been an increasing emphasis on devising suitable policies and practices for entrapment and storage of atmospheric CO2 to mitigate the detrimental effects of climatic change. Agriculture being a predominant global land use, C sequestration under different agro-ecosystems through appropriate management practices is an important option to combat the anthropogenic climate change. Conservation tillage along with residue management, stubble retention, mulching, organic farming and integrated nutrient management not only facilitates soil C storage but also improves soil health. Change in land-uses and cropping system also impart notable effects on soil C turnover. Biochar application is found effective in augmenting soil C stock and improving soil aggregation. Bioenergy plantations are also effective in sequestering C. Simulation models and remote sensing are innovative tools for predicting and mapping soil C status and identifying site-specific strategic policies to minimize the risk of land degradation and to maintain environmental sustainability. Therefore, the aim of this review is to disseminate ideas regarding current C status, identify researchable priorities and to deliberate pros and cons of agricultural management practices for better implementation of soil C sequestration strategies for mitigating the consequences of climate change.