Soil carbon stock in different land uses (Porto Nacional, Tocantins, Brazil)

ERA partnered with the Federal University of Tocantins (UFT) to analyze soil health and soil carbon among different land-uses such as agroforestry, native vegetation and degraded pasture, to compartively measure the benefits of regenerative agriculture techniques as well as native vegetation conservation. Soil collections in different land uses were carried out at the Family Agriculture School (EFA) in Porto Nacional, Tocantins, in 2022 and 2023. Three variables were used to estimate the soil carbon content: bulk density, organic carbon content and soil depth. The samples were collected by digging until 20 cm of soil at the stipulated points, and the samples were sent to a specialized laboratory for analysis of the main components. For each sampling point, the corresponding carbon stock was calculated using the equation from Veldkamp, 1994.ERA与托坎廷斯联邦大学（Federal University of Tocantins，UFT）开展合作，针对农林业、原生植被及退化牧场等不同土地利用方式下的土壤健康与土壤碳状况展开分析，以对比评估再生农业技术与原生植被保护的实施效益。2022年至2023年，研究团队在托坎廷斯州波尔图纳辛塔尔的家庭农业学校（Family Agriculture School，EFA）完成了不同土地利用类型下的土壤样本采集工作。本次研究选取容重、有机碳含量及土壤深度三个变量以估算土壤碳储量：在指定采样点挖掘至20cm土层获取土壤样本，随后将样本送至专业实验室开展主要组分分析；每个采样点对应的土壤碳储量均采用Veldkamp于1994年提出的公式进行计算。