玉潭油藏表层沉积物正烷烃和碳氮同位素

本研究研究了山区储层沉积物中有机碳 （OC） 的来源和移动及其在碳循环中的作用。研究人员发现，大多数 OC 来自外部来源，包括污水 （33.1%）、植物 （27.1%） 和土壤 （19.9%），其中超过 70% 由植物衍生材料组成。农业和城市化等人类活动对 OC 动力学有很大影响，而水库在管理其运输和储存方面起着至关重要的作用。这些发现加深了我们对农业流域碳储量的理解，并为山区水资源管理和生态保护提供了指导。

This study examines the sources, mobility, and ecological roles of organic carbon (OC) in reservoir sediments from mountainous areas, as well as its contributions to the regional carbon cycle. The researchers found that the majority of OC derives from external inputs: sewage (33.1%), vegetation (27.1%), and soil (19.9%), with plant-derived materials accounting for over 70% of the total OC. Human activities such as agriculture and urbanization substantially influence OC dynamics, while reservoirs play a critical role in modulating the transport and storage of OC. These findings advance our understanding of carbon stocks in agricultural watersheds and offer actionable guidance for water resource management and ecological conservation in mountainous regions.