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The Upper Citarum Watershed experiences exploitation of space and natural resources problems due to urbanization. Development mismatch based on spatial zoning causes the reduced function of protected areas and degradation of natural resource conservation. Forest, as a water catchment area, has a significant role in environmental sustainability. This study combines literature review methods and spatial analysis to determine the time series of forest land cover change between 2009, 2014, and 2019 by analyzing LULCC in the Upper Citarum Watershed. This study indicates that the time series of forest land cover in the Upper Citarum Watershed has undergone a significant change. Forest increased by 4.63% between 2009 and 2014, and by 32.19% between 2014 and 2019. Based on the mandate of Law no. 41 of 1999 concerning Forestry, the area of forest that must be maintained is at least 30% (thirty percent) of the area of watershed and/or islands with a proportional distribution. With the forest area of 23.61% of the Upper Citarum Watershed, the existing condition has not yet reached the target. So that in the future, collaboration between parties is still needed to achieve forest and watershed sustainability in the Upper Citarum Watershed.

Time series of forest land cover change in the Upper Citarum Watershed, West Java Province, Indonesia