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全氮是土壤质量的重要指标,是陆地氮库的重要组成部分,其不仅反映土壤肥力水平,也印证区域生态系统演变规律[1]。土壤氮素含量的空间变异性是引起区域氮素迁移转化过程模拟不确定性的重要原因之一[2]。掌握土壤全氮的空间特征,可为合理制定农业种植规划及耕地管理措施提供依据,是实现耕地土壤可持续利用和土壤有机氮库调
Total nitrogen, an important indicator of soil quality, is an important component of terrestrial nitrogen pools. It not only reflects the level of soil fertility, but also confirms the evolution of regional ecosystems [1]. Spatial variability of soil nitrogen content is one of the important reasons causing the simulation uncertainty in the process of nitrogen transport and transformation [2]. Grasping the spatial characteristics of soil total nitrogen can provide a basis for the reasonable formulation of agricultural planting planning and farmland management measures, and is the key to achieving the sustainable utilization of cultivated land and the management of soil organic nitrogen