Nambiar, E. K. S.
Author Affiliation :
Plantation Forest Research Centre, CSIRO Division of Forestry and Forest Products, Mount Gambier, SA, Australia.
Nambiar, E. K. S.; Squire, R.; Cromer, R.; Turner, J.; Boardman, R.
Conference paper; Journal article
Forest Ecology and Management
Conference Title :
Management of water and nutrient relations to increase forest growth. Proceedings of a seminar held 19-22 October 1987 at Canberra, Australia.
Development of plantations from planting to canopy closure is characterized both by high vulnerability to competition and great opportunity for maximizing production through innovative silviculture. To illustrate the links between process-based knowledge and management decisions, three key issues are analysed: competition for site resources; opportunity for and consequence of rapid development of canopy during free-growing stage; and production and configuration of the root system. Although empirical studies on weed competition have resulted in practical management prescriptions, further improvement calls for experiments in which the intensity of competition is manipulated and equal attention is paid to the dynamics of both water and nutrients. Even in relatively dry environments, intensive silvicultural practices can lead to rapid development of a stand and early canopy closure, which especially influences depletion and recharge of available soil water. The role of individual nutrients in canopy development and water-use efficiency at a stand level needs to be studied. New results suggest that fine-root production may not be a major sink for assimilates in young Pinus radiata stands grown under stress and greater attention needs to be focussed on root function in relation to root geometry and distribution in deeper parts of the profile.
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Indexing terms for this abstract:
Organism descriptor(s) :
Pinus, Pinus radiata, plants
ground vegetation, growth, hydrology, increment, nutrition, pines, Plant competition, Plant water relations, Plantations, root systems, Roots, silviculture, soil fertility, trees, water stress, woody plants
Management of water and nutrient relations to increase forest growth, Monterey pine
Geographical Location(s) :
Australia, South Australia
Broader term(s) :
Pinus, Pinaceae, Pinopsida, Pinophyta, gymnosperms, Spermatophyta, plants, eukaryotes, APEC countries, Australasia, Oceania, Commonwealth of Nations, Developed Countries, OECD Countries, Australia