1. BACKGROUND TO REQUIREMENT
Ground preparation is undertaken on replanting sites to aid tree establishment. Ground preparation operations include:
(1) cultivation to provide raised planting micro sites (mounding),
(2) manipulation of harvesting residues (brash raking),
(3) soil manipulation to provide drainage channels and break indurated layers.
The correct type of ground preparation improves the micro site availability for planting and assists with achieving the correct tree spacing and the development of a stable crop with good form which meets the required stocking density.
It is an overriding principle that the objectives of ground preparation are achieved to the highest environmental standards with minimal soil disturbance. These environmental standards are detailed in the “Forests & Water Guidelines” (Forestry Commission, fourth edition).
2. SCOPE OF CONTRACT
The Forest Service requirement is for areas clearfelled of trees to be mechanically prepared for subsequent planting. This ground preparation will involve trench mounding and the manipulation of felling residues to provide planting micro sites at the desired spacing. There may also be a requirement to drain sites after mounding and brash raking to prevent water logging and establish water protection areas.