A Spatio-Temporal Analysis of Illegal Waste Disposal Site Activities at National Strategic Area in Developing Country – Deli Serdang Regency, Indonesia

Abstract

Illegal waste disposal site (IWDS) have become a chronic and severe environmental issue worldwide. Monitoring of IWDS is a central environmental issue in both developed and developing countries. The main aim of this study is to analyze changes in the shape and size of the IWDS over a period of time and to evaluate problems related to IWDS activities. This study also aims to determine the spatial and temporal pattern distribution of IWDS activities based on land use by combining time-series analysis from 2021 to 2023 using historical satellite imagery and ArcGIS. The results show an increase in IWDS locations in Deli Serdang from 98 in 2021 to 112 in 2022 and 120 in 2023. The total area IWDS in Deli Serdang also rose from 115,138.1971 sq.m in 2021 to 164,194.87 sq.m in 2023. Plantation/estate areas consistently recorded the highest number of IWDS incidents each year. The result shows that the trend highlights the tendency for IWDS to occur in natural vegetation-rich environments, which effectively hides these activities and complicates detection and access efforts.

Keywords

• illegal dumping
• spatio-temporal
• time series
• national strategic area
• developing country