Temporal Dynamics of Rice Field Area Changes in Kesiman Village, Bali, Indonesia
摘要
The rapid urbanization and expansion of tourism in Bali have significantly altered agricultural landscapes, raising concerns about food security and the preservation of cultural heritage. This study explores the extent of rice field reduction and the corresponding increase in non-agricultural land, specifically in the Jepun Pipil Region, Kesiman Village, Bali, from 2018 to 2024. Utilizing remote sensing technology and Landsat satellite imagery, the research applies four vegetation indices—NDVI, EVI, SAVI, and LAI—to assess temporal land cover changes. Among these indices, NDVI emerged as the most effective for monitoring transformations. The findings reveal a substantial decline in rice fields, with a 42.82% reduction between 2018 and 2024, primarily driven by urban expansion and infrastructure development. In contrast, non-rice fields expanded by 101.01% during the same period, reflecting the growing demand for residential and commercial spaces. This study underscores the urgency of sustainable land-use planning and calls on policymakers to balance development with the preservation of agricultural land, particularly areas reliant on the traditional subak irrigation system. The insights from this research provide valuable guidance for local governments and stakeholders in land management and urban planning, contributing to broader efforts in monitoring agricultural land use and formulating effective policy strategies.