Prof Prijanto Pamoengkas: Silviculturalists Must Respond to Vegetation Changes and Focus on Different Forest Values

Today's forest managers need to understand the changes in vegetation that are taking place and focus on different forest values. Silviculturalists must address these developments and respond to rapidly changing expectations and a global paradigm shift in the way they view forests. This was conveyed by Prof. Prijanto Pamoengkas, Professor of IPB University from the Faculty of Forestry and Environment (Fahutan) in the Pre-Scientific Press Conference, (19/5).

According to him, since the selective slashing silvicultural system was implemented in the utilization of natural forests, the silvicultural system has undergone three improvements. Namely in 1989, 1993 and 2009. Until now in Indonesia there are four silvicultural systems to manage natural production forests. These are Indonesian Selective Cutting and Planting (TPTI), Selective Cutting and Stripping (TPTJ), Rumpang Cutting (TR), and Indonesian Planting Line Cutting (TJTI) (Ministry of Environment and Forestry 2021).
“This selective logging system with a diameter limit will only work if the tree size distribution and regeneration is large enough. Especially if the logging is carried out with very strict supervision. Basically, the TPTI system is the utilization of forest ecological processes that are not the same age, starting from the level of seedlings, saplings, poles, and trees that occur in logged-over areas to the formation of balanced stands. The acceleration of this growth succession lies in the composition of the remaining stands and their silvicultural actions,” he said.
According to him, the silvicultural system can be defined as a series of activities consisting of regeneration (rejuvenation), maintenance and harvesting carried out systematically on a stand throughout its life cycle. Furthermore, the three components are used as components of activities that must exist in the application of the silvicultural system. Selective logging can only lead to deforestation if the three silvicultural components are not fully applied. If there is one component that is not applied, then it cannot be said as an action of the silvicultural system. In other words, forest managers are not implementing a silvicultural system.
"Therefore, there is a demand to present a natural forest silvicultural system that is adaptive from the ecological aspect and in accordance with the characteristics of the forest," he said. According to him, there are four factors that must be considered in the selection of a natural forest silvicultural system. Namely the regulations or provisions of the Ministry of Environment and Forestry (KLHK) related to the selection of the silvicultural system. Implementation requirements of each silvicultural system. Ecological condition of the forest area, consisting of forest type, species composition, stand structure, stand potential and natural regeneration. And the physical condition of the forest area, consisting of soil type, slope, altitude above sea level (altitude) and climate.
In the context of natural production forest management, he continued, the diversity of adaptations of commercially valuable species can be taken into consideration in the development of silvicultural systems. As a direction in the development of the silvicultural system.
"From the results of a forest inventory study in a forest area, there are three important components, namely forest communities based on the closeness of the composition of the species making up the stands, the similarity between the compositions of the species that make up the stands at the canopy level (pole or tree level) and the species at the regeneration level at the seedling or tree level. stake. And the shape of the distribution or distribution of tree diameters that describes the status of resources," he added.
He added that one of the important things in the practice of natural production forest management is the success in implementing a silvicultural system that is adaptive to ecological conditions and is economically profitable.
“So far, the ecological consequences of natural regeneration that develop in logged-over forest areas have not received much attention from policy makers. In fact, these conditions are the main consideration in determining the silvicultural system," he said. (Zul) (IAAS/SYA)

Published Date : 19-May-2022

Resource Person : Prof Prijanto Pamoengkas

Keyword : IPB University, Silviculture, Professor of IPB, Fahutan IPB