© 1989 by Institute of Chartered Foresters
The Use of Large Scale Ridge and Furrow Landforms in Forestry Reclamation of Mineral Workings
Forestry Commission, Forest Research Station Alice Holt Lodge, Wrecclesham, Farnham, Surrey, GU10 4LH, England
Large scale (30 m wide x 1.5 m high) ridge and furrow landforms are commonly used in forest reclamation schemes in Britain to aid the removal of excess winter rainfall and improve rooting conditions. An investigation of soil physical and hydrological properties in relation to tree growth at three sites where ridge and furrows have been used has shown that this system largely succeeded in producing land with reduced waterlogging. In wetter parts of the country this has promoted tree growth, probably because roots can exploit a greater depth of aerated soil. In the drier east, however, the higher parts of the ridges were associated with poorer tree growth because they suffered long periods of large soil water deficits. The effect of drought was exacerbated by poor root systems, probably resulting from high soil bulk densities.
The results support the use of the ridge and furrow system in areas where rainfall is high and soil moisture deficits low, but suggest that a modified system of lower amplitude may be warranted in drier areas. The study also reveals a need for more research on cultivation techniques to alleviate soil compaction.
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