7th North American Forest Soils Conference

University of British Columbia, Vancouver, B.C., Canada V6T 1W5

Published 1990

Sustained Productivity of Forest Soils

Edited by S.P. Gessel, D.S. Lacate, G.F. Weetman, and R.F. Powers

Forestry Publications, Faculty of Forestry,
MacMillan Bldg., University of British Columbia,
Vancouver, B.C., Canada V6T 1W5

phone (604) 228-2727, fax (604) 222-8645

Suggested citation: 1990: In: S.P. Gessel, D.S. Lacate, G.F. Weetman, and R.F. Powers. Sustained Productivity of Forest Soils. Proceedings of the 7th North American Forest Soils Conference, University of British Columbia, Faculty of Forestry Publication, Vancouver, B.C., 525 p.

Printed in Canada

ISBN 1-55056-29-8

Contents
General Session
1	The Challenges of Stewardship: Sustaining Forest Land Productivity in British Columbia	Ted E. Baker and J. Andre McKinnon	1
2	Some Threats to Sustaining Forest Yields in North America: Research Challenges	Peter J. Rennie	6
3	Forest Productivity in the Southern Hemisphere with Particular Emphasis on Managed Forests	John Turner and Stanley P. Gessel	23
Site Processes
4	Deterioration of Forest Land as a Result of Atmospheric Deposition in Europe: A Review	Nico van Breemen	40
5	Sustaining Site Productivity in North American Forests: Problems and Prospects	R.F. Powers, D.H. Alban, R.E. Miller, A.E. Tiarks, C.G. Wells, P.E. Avers, R.G. Cline, R.O. Fitzgerald, N.S. Loftus, Jr.	49
6	Evaluating the Seedling Moisture Environment After Site Preparation	D.L. Spittlehouse and S.W. Childs	80
7	Physical Properties of Forest Soils Containing Rock Fragments	Stuart W. Childs and Alan L. Flint	95
8	Changes in Forest Biomass and Nutrient Distribution in Walker Branch Watershed, Tennessee, From 1967 to 1987	D.W. Johnson, R.J. Olson, L.K. Mann, and D.E. Todd	122
9	Can Measurable Soil Properties be Integrated into a Framework for Characterizing Forest Productivity?	Gray S. Henderson, R. David Hammer, and David F. Grigal	137
10	Estimating Nutrient Uptake in Forest Ecosystems	J.G. Bockheim and J.E. Leide	155
11	Organics and Metal Solubility in California Forest Soils	J.G. McColl, A.A. Pohlman, J.M. Jersak, S.C. Tam, and R.R. Northup	178
12	Denitrification in Temperate Forest Ecosystems	Eric A. Davidson, David D. Myrold, and Peter M. Groffman	196
13	Mechanisms Leading to a Sustained Growth Response N-Fertilization in a Stand of Pinus radiata	P.K. Khanna and R.J. Raison	221
14	Nitrogen Pools and Processes During Natural Regeneration of Loblolly Pine	David H. Van Lear, Peter R. Kapeluck, and Jack B. Waide	234
15	Forest Stand Conversion From Hardwoods to Pine: Twenty-Three Years Later	Carl L. Lane	253
16	Douglas-Fir Productivity: A Conceptual Model of its Regulation by Water and Nutrient Availability	Charles C. Grier, Stith T. Gower, and Kristiina A. Vogt	257
17	Influences of Acidic Deposition and Forest Development on Conifers at Pack Forest, New York	J.P. Shepard, C.A. Nowak, D.C. LeBlanc, R.D. Briggs, and R.B. Downard, Jr.	274
Changing Productivity
18	Amelioration of Soils by Trees	Richard F. Fisher	290
19	Manipulating Loblolly Pine Productivity with Early Cultural Treatment	H. Lee Allen	301
20	Potential for Productivity Decline in New Zealand Radiata Pine Forests	W.J. Dyck and M.F. Skinner	318
21	The Effect of Alder Forest Cover and Alder Forest Conversion on Site Fertility and Productivity	Helga Van Miegroet, Dale W. Cole, and Peter S. Homann	333
22	Some Slashburning Effects on Soil and Trees in British Columbia	M.P. Curran and T.M. Ballard	355
23	Effects of Burning Douglas-Fir Logging Slash on Stand Development and Site Productivity	Richard E. Miller and Richard E. Bigley	362
24	Impact of Aspen Timber Harvesting on Soils	David H. Alban and Donald A. Perala	377
25	Soil Organic Matter, Timber Harvesting, and Forest Productivity in the Inland Northwest	M.F. Jurgensen, A.E. Harvey, R.T. Graham, M.J. Larsen, J.R. Tonn, and D.S. Page-Dumrose	392
Management Applications
26	On Fertilizing Semimature Jack Pine Stands in the Boreal Forest of Central Canada	I.K. Morrison and N.W. Foster	416
27	Understanding Competition for Soil Nutrients-The Key to Site Productivity on Southeastern Coastal Plain Spodosols	D.G. Neary, E.J. Jokela, N.B. Comerford, S.R. Colbert, and T.E. Cooksey	432
28	Post-burn Nitrogen and Phosphorous Availability of Deep Humus Soils in Coastal British Columbia Cedar/hemlock Forests and the Use of Fertilization and Salal Eradication to Restore Productivity	G.F. Weetman, R. Fournier, E. Schnorbus Panozzo, and J. Baker	451
29	Nutritional Diagnoses in Loblolly Pine Stands Using a Dris Approach	J.N. Hockman and H. Lee Allen	500
30	Economics of Forest Soil Resource Management	George E. Dissmeyer and Bennett B. Foster	515

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