The effects of agricultural land consolidation on carbon and ecosystem service value changes in Jiangxi Province, China

Based on the characteristics of agricultural production in Jiangxi Province, China, the changes of agricultural carbon emission and carbon fixation in various cities were estimated for the whole process of soil respiration, agricultural production, and crop output from 2010 to 2020. Then, a linear regression model was established based on the significant correlation between rice paddy planting and net agricultural carbon storage. By collecting and sorting out the geographic coordinate data of the agricultural land consolidation projects in Jiangxi Province, this study explored if the agricultural land consolidation could improve net agricultural carbon storage by increasing vegetation productivity, and ecosystem service value (ESV) by changing land use types. Also, relevant paths and evaluation methods were discussed, and a quantitative analysis was made. It could be concluded that, from 2010 to 2020, agriculture in Jiangxi Province realized net carbon sink, although there were ups and downs every year. In terms of land use types, cultivated land contributed the most to agricultural carbon sources and sinks in Jiangxi Province. As the key component of crop carbon storage in Jiangxi Province, rice paddy production accounted for 60% of the sown area, 90% of total crop output, and 93% of carbon storage among all the crops. Low-carbon rice farming was the best solution to the low-carbon development of agriculture in Jiangxi Province. By improving the cultivated land and plant production capacity, agricultural land consolidation projects in Jiangxi Province increased the net agricultural carbon storage by 709,600 tons of carbon (t C) per year, while increased the ESV by ¥230 million (CNY) per year through changing the land use types, such as converting the construction land into agricultural land. © 2023,Bio Tech System. All Rights Reserved.