Coastal dynamic spatial impact on potential rice paddy field production lost in the coastal area of Pesurungan Beach, Dawan District, Klungkung Regency, Bali

Abstract Rice paddy fields in the Pesurungan Beach coastal area are vulnerable to coastal dynamics and can influence regional food productivity. Over this problem, the research aims to identify the coastal dynamic spatial impact on potential rice paddy field production lost in coastal areas in Pesurungan Beach, Dawan District, Klungkung Regency. The research is a case study and the methods used in this research are mainly field observation with the help of Google Earth satellite imagery through a remote sensing approach and analysis using QGIS for delineation also the field calculator. The results show that 1) shorelines changed dramatically throughout 2003-2022 stretching across 45,14 - 195,69 meters of land lost. 2) Erosion contributes majorly with an extent area of -106.087,20 m 2 in the period of 2015-2021 compared to an accretion extent of only 1.079,72 m 2 in the same time. 3) Results also show that beach dynamics change throughout time and also impact the rice paddy field. 4 The total rice paddy field production loss caused by coastal dynamic impact estimates over 128.030.97 kg or 128,03 tons.