Metla Project 3256

Methods for monitoring forest regeneration results

[  Suomeksi  |  Objectives  |  Results  |  Project leader  |  Researchers  |  Publications  |  Metla Research  ]

Duration: 1999-2003   Keywords: Regeneration result, quality of young stands, remote sensing

Objectives

The aim of project is
  1. to define the role of remote sensing material in detecting the regeneration felling areas
  2. to develop a method for regeneration survey in multifunctional young stands
  3. to develop and test a regeneration quality control system for private forestry in Finland
  4. to produce initial data from young stands for long term calculation systems (Mela)
  5. to support the development of information systems for forest regeneration in forestry centers and in Tapio.

Results

The detection and delineation of new regeneration felling areas from a pair of multitemporal aerial images of the same area with a semiautomatic method seemed to be relatively reliable in operational use. Small compartments (area smaller than 0.5 ha) were most difficult to detect. It was not possible to identify soil treatment (done or not done) from panchromatic aerial images whereas infrared aerial images with visual interpretation gave reliable results. The effectiveness was further improved by a semiautomatic method.

A quality control method for forest regeneration activities in private forestry was developed. This method gives feedback to operational staff on their own work and helps further develop working methods and skills. The feedback is obtained through regeneration results inventoried on young stands. The information is collected in a database which is easy to use in daily work. The quality tool was tested in 20 forestry associations located in five forestry center areas during 2000-2002. The regeneration survey revealed considerable variation in the results between forestry associations in all regeneration methods.

Project leader: Saksa, Timo
The Finnish Forest Research Institute, Suonenjoki Research Unit, Juntintie 154, 77600 Suonenjoki
Phone: +358 10 211 4834 Telefax: +358 10 211 4801
E-mail: timo.saksa@metla.fi

Other researchers: Kolström, Taneli (1999-2000), Mäki, Juha (1999), Särkkä-Pakkala, Kaisa (1999-2002)


Top of page

Updated 30.12.2006
Comments