Soil Organic Carbon Distribution and Its Response to Soil Erosion Based on EEM-PARAFAC and Stable Carbon Isotope, a Field Study in the Rocky Desertification Control of South China Karst

Abandoned land restoration is the most effective strategy for enhancing soil organic carbon (SOC) quality in South China's karst regions, according to a new study. Researchers analyzed SOC distribution and its response to erosion across five restoration types—abandoned land, grassland, peanut cultivated land, Zanthoxylum bungeanum land, and forest—using fluorescence spectroscopy (EEM-PARAFAC) and stable carbon isotopes (δ13Csoc). The findings revealed three distinct fluorescence components: two humus-like (C1 and C2) and one protein-like (C2), with SOC content and isotopic values indicating soil redistribution from midstream to downstream. This study provides critical data for optimizing rocky desertification control in karst areas, improving carbon sequestration potential.

Wang, X., Liu, Z., Xiong, K., Li, Y., & Cheng, K. (2022). Soil Organic Carbon Distribution and Its Response to Soil Erosion Based on EEM-PARAFAC and Stable Carbon Isotope, a Field Study in the Rocky Desertification Control of South China Karst. International Journal of Environmental Research and Public Health, 19(6), 3210. https://doi.org/10.3390/ijerph19063210