Title: Evaluating the impact of increasing temperatures on changes in Soil Organic Carbon stocks: sensitivity analysis and non-standard discrete approximation Show Chinese title

Title: 评估升温对土壤有机碳储量变化的影响：敏感性分析与非标准离散逼近

Abstract: A novel model is here introduced for the SOC change index defined as the normalized difference between the actual Soil Organic Carbon and the value assumed at an initial reference year. It is tailored on the RothC carbon model dynamics and assumes as baseline the value of the SOC equilibrium under constant environmental conditions. A sensitivity analysis is performed to evaluate the response of the model to changes of temperature, Net Primary Production (NPP), and land use soil class (forest, grassland, arable). A non-standard monthly time-stepping procedure has been proposed to approximate the SOC change index in the Alta Murgia National Park, a protected area in the Italian Apulia region, selected as test site. In the case of arable class, the SOC change index exhibits a negative trend which can be inverted by a suitable organic fertilization program here proposed. Show Chinese abstract

Abstract: 这里引入了一个新模型，用于定义SOC变化指数，即实际土壤有机碳与初始参考年份假设值之间的归一化差值。 该模型基于RothC碳模型的动力学，并以在恒定环境条件下SOC平衡值作为基准。 进行了敏感性分析，以评估模型对温度、净初级生产力（NPP）和土地利用土壤类别（森林、草地、农田）变化的响应。 提出了一种非标准的月度时间步进方法，以近似阿尔塔穆尔吉亚国家公园的SOC变化指数，该公园是意大利普利亚大区的一个保护区，被选为测试区域。 在农田类别的情况下，SOC变化指数表现出负趋势，通过此处提出的适当有机施肥方案可以将其逆转。