Integrated Fundamentals of Soil Science: Processes, Properties and Sustainable Management

Land evaluation and land use planning provide the basis for allocating finite land resources to uses that are agronomically productive, environmentally responsible and socially relevant. This chapter reviews established and emerging approaches used to assess land capability, crop suitability, soil survey information, remote sensing outputs, watershed processes and precision farming applications. It first discusses the USDA Land Capability Classification and the FAO Framework for Land Evaluation, including their use in crop suitability assessment and climate-adjusted planning. The chapter then examines soil survey interpretation and digital soil mapping, with emphasis on the SCORPAN framework, soilgrids 2.0 and machine learning-based prediction of soil properties. Remote sensing and GIS are presented as central tools for land cover mapping, spectral index analysis, spatial multi-criteria evaluation and land use change modelling. Watershed management is addressed through hydrological balance, runoff estimation, RUSLE-based erosion assessment and integrated physical, biological and agronomic interventions. Precision farming is considered through electrical conductivity mapping, UAV monitoring, variable rate technology and AI-supported decision systems. The review also highlights how dynamic climate scenarios and multi-source spatial data can improve land suitability assessment at global, regional, watershed and field scales. Overall, the chapter shows that sustainable land management increasingly depends on the integration of classical land evaluation concepts with geospatial technologies, digital soil information, watershed models and site-specific agricultural management.