© 1956 by Institute of Chartered Foresters
THE IMPORTANCE OF SHELTER TO EARLY TREE GROWTH ON UPLAND MOORS
Department of Forestry, University of Oxford
A comparison of the effects of differing methods of cultivation carried out on typical Calluna moor in the Cleveland (Yorkshire) massif has revealed that single-furrow deep forestry ploughing, by reason of its pronounced plough-ridges, has advantages over other more shallow and complete deep methods of ploughing in giving shelter from cold off-shore winds which cause die-back. Orientation of the plough-ridges transverse to the wind direction and the use of leeward ridge slopes as planting positions enhances this shelter effect. The paper ends by drawing attention to the need for forest meteorological reasearch upon the wind-tree growth relationship.