Decadal changes in the rice-cropping system in the Ayeyarwady Delta using a large archive of satellite imagery from 1981 to 2020

Abstract In the last 40 years, rice-cropping system has considerably changed in Ayeyarwady Delta. The large archive of satellite imagery provides a history how land and water resource managements have face growing populations, demand, climate change. This study aimed to assess decadal changes Delta by using for years (1981 − 2020). long-term NDVI dataset provided various information on rice cultivation. Signal processing techniques were used detect historical system, impact change was assessed trend analysis. Until 1980s, single-cropping summer dominant To enhance grain yield rice, irrigation facilities introduced 1992 under an initiative Myanmar government. As result, annual cropping intensities increased from 1.087 ± 0.390 1980s 1.422 0.499 2010s. would be useful consider practical cost-effective utilization remaining resources. Moreover, analysis time-series showed negative trends coastal areas. indicates that production areas been constrained saline intrusion. salt-affected are expected expand future scenarios. Government support is highly required sustainable