PENILAIAN RISIKO POHON DI JALUR HEALING FOREST KHDTK WANAGAMA MENGGUNAKAN METODE TREE RISK ASSESSMENT DARI PEDOMAN INTERNATIONAL SOCIETY OF ARBORICULTURE

Ratih Rahmatillah Lestari, Ir. Ananto Triyogo, S.Hut., M.Sc., Ph.D., IPM. ; Dr.Ir. Dwi Tyaningsih Adriyanti, M.P.

2024 | Skripsi | KEHUTANAN

Hutan pada daerah perkotaan atau yang memiliki banyak aktivitas manusia memerlukan adanya pengetahuan mengenai arborikultur. Salah satu tujuan dari arborikultur adalah untuk memelihara pohon dan mitigasi kerugian baik secara material dan immaterial. KHDTK Wanagama memiliki salah satu wisata alam berupa jalur healing forest yang terletak di Petak 5. Tujuan penilaian risiko pohon di jalur healing forest merupakan tindakan pencegahan terhadap potensi risiko yang akan terjadi di jalur healing forest KHDTK Wanagama. Penelitian dilakukan pada jalur healing forest di petak 5 KHDTK Wanagama dengan panjang 1,18 km yang dibagi menjadi 5 ruas dengan pertimbangan kondisi jalur tidak lurus. Tegakan diamati dengan metode dari pedoman ISA yaitu memperhatikan secara visual pohon yang memiliki risiko mulai dari akar, batang hingga tajuk. Kemudian dianalisis kondisi fisiknya (tinggi, DBH, diameter tajuk) serta kategorisasi peringkat risiko (rendah, sedang, tinggi, ekstrim) serta tipe-tipe kerusakan yang ditemui.  Hasil pengamatan yang diperoleh yaitu terdapat 9 spesies pohon yang ada di sepanjang jalur healing forest. Persentase jumlah individu yang dominan pada kelas tinggi yaitu 10-12 meter, kelas DBH yaitu 25-40 cm dan pada kelas diameter tajuk yaitu 1,5-2,5 meter. Sedangkan persentase pada peringkat risiko masing-masing bagian pohon ditemukan beragam tetapi didominasi dengan risiko rendah-sedang. Selain itu, tipe kerusakan yang paling banyak ditemui yaitu batang dengan kondisi miring, kondisi batang kering rawan patah serta akar yang terangkat ke pemukaan.

Forests in urban areas or a lot of human activity require knowledge of arboriculture. One of the goals of arboriculture is to maintain trees and mitigate losses material and immaterial. KHDTK Wanagama has one of the natural attractions, a healing forest route which is located in Plot 5. The aim of assessing the risk of trees on the healing forest route is to prevent potential risks that will occur on the KHDTK Wanagama healing forest route. The research was held in healing forest route in plot 5 of KHDTK Wanagama with a length of 1.18 km which was divided into 5 sections considering the condition of the route which was not straight. Trees were observed using the method from the ISA guidelines, namely visually paying attention to trees that are at risk from the roots, trunk to crown. Then the physical condition is analyzed (height, DBH, canopy diameter) as well as the risk ranking categorization (low, medium, high, extreme) and the types of damage encountered. The results of the observations obtained were that there were 9 species of trees along the healing forest route. The dominant percentage of individuals in the height class is 10-12 meters, DBH class is 25-40 cm and in the canopy diameter class is 1.5-2.5 meters. Meanwhile, the percentage of risk ranking for each part of the tree was found diverse but was dominated by low-medium risk. Apart from that, the types of damage that are most often found are slanted stems, dry stems prone to breaking and roots that are raised to the surface.

Kata Kunci : Arborikultur, Pedoman ISA, Kondisi Fisik, Peringkat Risiko