Planting Density Research

Planting density has large potential impacts on amount, size and value of timber harvested from managed forests and on biological and technical rotation lengths.  Measurement of long-term experimental projects testing a variety of species and panting density regimes have been established throughout the province since the 1960s on the coast and the 1980s in the interior.  The growth data generated from these long-term experiments are used to develop forest growth models that provide important decision-making tools to help forecast timber supply and to address new and emerging forest health issues.  The experiments have also been used to examine the effects of different species on soil properties.

Experimental Projects - Coast

Experimental Project #

Title

# Inst.

Year Establ.

368

The Adaptability of Tree Species to Forest Sites

1 1958

571

Trial of Tree Species and Initial Spacing on the West Coast of Vancouver Island

3

1962

1130

Espacement Trials of Mixed Douglas-Fir and Western Red Cedar on Coastal Sites

1

1992

1181

Hybrid Poplar Cooperative Spacing Trials

2

1994

1206

Espacement Trials of Coastal Species

8

1995

Experimental Projects - Interior

EP

Title

# Inst.

Year Establ.

537

White spruce espacement trial

1

1959

607

Ponderosa pine spacing trials

3

1962 - 1963

660

Espacement of white pine, Lodgepole pine and Douglas-fir within Prince George Forest Region

3

1967

770.55

Barnes Creek lodgepole pine espacement trial

1

1984

962

A comprehensive study to determine the effects of initial espacement and subsequent thinning on the growth and yield of lodgepole pine plantations.

1

1987

964

Espacement trials in the BC Interior

22

1986 - 2000

1181

Hybrid Poplar Cooperative Spacing Trials

1

1995

Planting Density Publications

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