Abstract:
To study the agricultural drought situation in the Beijing- Tianjin- Hebei region over the years, soil moisture monitoring data from 26 stations in the region from 2003 to 2017 were used to calculate the soil moisture status index (SMCI) of each station yearly and monthly. The index was used to study the interannual and interannual changes and spatial distribution characteristics of the Beijing-Tianjin-Hebei region. The results show that over the past 15 years, agricultural droughts in the Beijing-Tianjin-Hebei region occurred an average of 3.7 times per year, mainly concentrated in the central and southern regions of Hebei Province, with light and moderate droughts as main types; The annual average value of regional SMCI shows an upward trend, with the highest SMCI average value in 2016 and the worsening of agricultural drought; The agricultural drought degree of 56.1% of arable land shows a significant upward trend, mainly distributed in the southeastern and northern parts of Hebei Province. The research results can provide theoretical basis for drought warning and drought resistance and disaster reduction in the Beijing-Tianjin-Hebei region.