干旱区生态环境知识资源中心

A study of the soils in the Northern Emirates (NE), which covers 8.2% of the United Arab Emirates (UAE) was undertaken applying the USDA Soil Taxonomy (ST) to classify soils up to the family level. The objective of the study was to identify the key factors and processes responsible for soil formation in hyper-arid environments in general and the study area in particular and to draw conclusions regarding soil classification and land management. Fifteen pedons representing the major soils in the region were investigated. Samples were collected, processed and analysed for physical, chemical and mineralogical characteristics. Factors controlling soil development such as parent material, climate, plants and animals, relief, time, human activities and processes of salinization, calcification, gypsification, sodification and aeolian deposition were evaluated to guide soil classification and management. Data from soil families were used for describing and comparing soil-forming factors and processes. It is concluded that these factors and processes play major roles in influencing soil use and management. There are also strong relationships between these factors and processes and the relevant soil taxa from Soil Taxonomy.