Days / Year With Mild Soil Water Stress In A 1.2m Sandy Clay Loam

This dataset contains the soil water stress in South Africa. The importance of soil water content in agricultural applications is vital since the need to irrigate occurs when the actual soil water content is less than the critical soil water content at which plant stress commences. The objective of soil water stress mapping was to determine, for each Quaternary Catchment (QC) with its unique rainfall, temperature and potential evaporation climate, the number of days per year at which soil water content would be at critical plant stress/no stress levels.

本数据集涵盖南非境内的土壤水分胁迫情况。土壤含水量在农业应用中至关重要，因为当实际土壤含水量低于作物开始遭受水分胁迫的临界土壤含水量时，即需开展灌溉作业。本次土壤水分胁迫制图的目标为：针对每个具备独特降雨、气温与潜在蒸发气候特征的第四纪汇水区（Quaternary Catchment, QC），计算其每年内土壤含水量处于作物临界胁迫或无胁迫水平的天数。