Characteristics of exposed cavities of urban trees in a landscape of Southtern Jakarta and their filling using polyurethane foam

International Symposium on Arboriculture in the Tropics: Securing Ecosystem Functions in Urban Landscape 2017

农业科学;生态环境科学

Nandika, D.^1 ; Karlinasari, L.^1 ; Siregar, I.Z.^1 ; Lestari, A.T.^2 ; Nababan, M.Y.S.^1

Faculty of Forestry, Bogor Agricultural University, Kampus IPB Dramaga, Dramaga, Jawa Barat, Bogor

16680, Indonesia^1

Forestry Study Program, Mataram University, Jalan Majapahit No. 62, Dasan Agung Baru, Selaparang, Mataram, West-Nusa Tenggara

83114, Indonesia^2

关键词: Cavity volume;    Central business districts;    Colored resins;    Filling process;    Micro drilling;    Polyurethane Foam;    Resistance technique;    Wound dressings;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/203/1/012029/pdf
DOI  :  10.1088/1755-1315/203/1/012029

来源: IOP

【 摘 要 】

A study was conducted to determine the characteristics of exposed cavities on the trunk of urban trees in a Central Business District (CBD) landscape, South Jakarta. The position and number of exposed cavities, as well as the dimensions, were recorded. Each exposed cavity was then filled using a polyurethane foam, followed by wound dressing using colored resin. One month after the filling process, the reliability of the filled cavities was measured using a micro-drilling resistance technique. The results showed that most of the exposed cavities were found in the main trunk (48.84%) followed by primary branches (41.86%), stem base (6.98%), and secondary branches (2.32%). Almost 69% of the exposed cavities revealed symptoms of decay, including discoloration. The exposed cavity volumes ranged from 0.04 dm3 to 63.61 dm3 with an average of 9.79 dm3. Most of the exposed cavity were 10 cm to 30 cm deep (41.86%), followed by those 5 cm to 10 cm deep (25. 58%), 3 cm to 5 cm deep (18.60%), 30 cm - 50 cm deep (9.30%), and more than 50 cm deep (4.65%). The filling of exposed cavities using polyurethane foam indicated good reliability. There was no checking and/or cracking on the surface of the filled cavity, either on the Trembesi trees, Flamboyan trees, or palm trees.