Imawan Wahyu Hidayat
UPT Balai Konservasi Tumbuhan Kebun Raya Cibodas – LIPI
Telp./Fax: (0263) 512233, E-mail: imawan_wh@yahoo.com
The objectives of this study were to evaluate roadside greenery in Jagorawi Highway as buffer and supporting factor of user safety in three major functions, such as air pollutant reduction, noise abatement, and space barrier. Fieldwork study was conducted to three segments of observation. The comparative method used to measure plants suitability and compatibility in roadside greenery of Jagorawi Highway according to the regulations and principles of landscape architecture science. The study results indicated that plants selection, structures, patterns, and configurations were not suitable and not compatible for supporting those functions. The roadside greenery at all segments achieved moderate grades: 44,26% (I); 47,54%-50,32% (II); 49,35%-50,74% (III) for air pollutant reduction, bad to good grades: 32,67%-41,67% (I); 30,0% (II); 59,33%-69,67% (III) for noise abatement, moderate to good grades: 56,00%-57,33% (I); 57,69%-58,85% (II); 62,83%-69,67% (III) for space barrier function, and moderate to good grades: 56,00%-58,17% (I); 57,50% -58,46% (II); 59,42% (III) for aesthetic function. This study was recommended that a good roadside greenery planning needs an appropriate plants selection based on structure, performance, planting pattern, and configuration to achieve the effectiveness of roadside greenery role as environment buffer and supporting the safety in Jagorawi Highway.
Key words: Roadside greenery, air pollutant reduction, noise abatement, space barrier, comparative method.