A group of Chinese researchers has published a map of soil organic carbon (SOC) content data for global black soil regions, shedding light on quantifying agroecosystems and global food security, according to the recent issue of the journal Remote Sensing of Environment.
Research has shown that the carbon cycle is influenced by agricultural soils. Accurately mapping COS content can help clarify carbon capture capacity, quantify the agroecosystem, and contribute to global food security. But it is still a challenge to acquire reliable COS content datasets.
The study published in the magazine was carried out by researchers from the Northeast Institute of Geography and Agroecology of the Chinese Academy of Sciences. According to the magazine, researchers collected more than 191,000 remote sensing images and elevation model data and used the meta-learning convolutional neural network model to generate a high-resolution data map for global black soil regions. .
The study data indicates that the COS content in global black soil regions shows a decreasing trend, which can be divided into a significant decreasing phase from 1984 to 2000 and a moderate decreasing phase from 2001 to 2021.