Son, NT; Thanh, BX (2020). Remotely sensed drought evaluation over rice cultivated areas in Cambodia during 2000 to 2019. GEOCARTO INTERNATIONAL.

Drought is one of the costliest natural disasters, effecting many aspects of human livelihoods. This study assessed drought conditions in Cambodia from Moderate Resolution Imaging Spectroradiometer (MODIS) data during 2000 to 2019 using the Vegetation Health Index. The results verified with the satellite soil moisture indicated close agreement between these two datasets. The drought areas were concentrated in the country's central plains, with the larger drought area particularly observed for 2016. Roughly 31.3% of rice-growing area was affected by severe drought during the dry season in this abnormal year (2016), compared to that of 26.1% in a normal year (2017). The results of drought probability calculated for the entire study period indicated that 63 and 17 districts were associated with droughts in the dry and wet seasons, respectively. This study demonstrated the potential application of MODIS data for decadal drought assessment over rice cultivated areas, which was important for crop and water management.