RESOURCES PRACTICES BRANCH Silviculture Facts Summary Charts and Graphs March 216
Data Sources This publication s sourced data is based on primarily Reporting Silviculture Updates and Land Status Tracking System (RESULTS) database for all graphs and charts, except for the Silviculture Systems charts which are based on a combination of RESULTS data and Forest Tenures Administration (FTA) data base. All charts and graphs represent Silviculture activities reported into the databases on Crown land only and are derived from all funding sources (public and private). Times for charts and graphs vary due to data availability and compatibility. Generally, most visuals are targeted to illustrate the time frame between the fiscal years of 1981/1982 to 214/215. Acknowledgements The majority of the database queries, chart and graph production provided by Mei-Ching Tsoi. Final compilation and production of the visuals provided by Dave Weaver of the Resource Practices Branch. Special thanks to Francesco Cortini for his excellent Excel assistance. Publication dates This publication is dated March 12, 216. Data presented in this publication was based on RESULTS / FTA database queries up to September 18th, 215. 2 P a g e
Table of Contents Page Silviculture Activity Descriptions...5 Provincial Silviculture Summary Graphs Totals Accomplishments and Regional Summaries...7 Graph 1 - Silvicultural Systems on all Crown Land...7 Graph 1a - Silvicultural Systems for Coastal Forest Region...7 Graph 1b - Silvicultural Systems for Northern Interior Forest Region...8 Graph 1c - Silvicultural Systems for Southern Interior Forest Region...8 Graph 2 Changes in Not Satisfactory Restocked (NSR) 199 to 215 (Harvesting )...9 Graph 3 Site Preparation on all Crown Land by Method...9 Graph 3a - Site Preparation for Coastal Forest Region...1 Graph 3b - Site Preparation for Northern Interior Forest Region...1 Graph 3c - Site Preparation for Southern Interior Forest Region...11 Graph 4 Planting on all Crown Land Provincially since 195 Trees...11 Graph 5 Planting on all Crown land Provincially Cumulative since 195 Trees...12 Graph 6 - Planting on all Crown Land Trees and Area...12 Graph 6a Planting Area by Forest Region...13 Graph 6b Trees Planted by Forest Region...13 Graph 7 Species Planted on all Crown Land 1986 to 214- Trees...14 Graph 7a - Species Planted for Coastal Forest Region...14 Graph 7b - Species Planted for Northern Interior Forest Region...15 Graph 7c - Species Planted for Southern Interior Forest Region...15 Graph 8 Brushing on all Crown Land 1981 to 215 by Method...16 Graph 8a - Brushing for Coastal Forest Region...16 Graph 8b - Brushing for Northern Interior Forest Region...17 Graph 8c - Brushing for Southern Interior Forest Region...17 3 P a g e
Graph 9 Silviculture Surveys on all Crown Land...18 Graph 9a - Silviculture Surveys by Forest Region...18 Graph 1 Spacing on all Crown Land...19 Graph 1a Spacing by Forest Region...19 Graph 11 - Pruning on all Crown Land...2 Graph 11a - Pruning by Forest Region...2 Graph 12 Fertilization on all Crown Land...21 Graph 12a - Fertilization by Forest Region...21 Appendix 1 Listing of Website Links to Detailed Tables of Current Silviculture Statistics up to 215...22 4 P a g e
Silviculture Activity Descriptions Harvesting and Silvicultural Systems Harvesting removes the forest cover from an area to varying degrees, depending on the silvicultural system being used. The conventional clearcutting silvicultural system removes all the trees, while partial cutting silviculture systems (seed tree, shelterwood, selection, variable retention and clearcutting with reserves) leave residual trees behind. Harvesting also initiates the process of silviculture activities and responsibilities. Partial cutting can often aid in preserving scenic values and maintain water quality in sensitive areas. Site Preparation The goal of preparing a harvested area for planting or natural regeneration through ground scarification, disc trenching, mounding, or burning, is to provide new seedlings with more suitable sites on which to grow. Site preparation techniques, such as burning, can also mimic natural disturbance processes. Planting Planting after harvesting establishes a new forest sooner than relying on natural regeneration. It also allows for the use of genetically improved tree seedlings and a broader mix of tree and plant species. Up to 16 conifer and 3 broadleaf species of trees are planted across the province annually, ranging in many different sizes and ages at the time of planting. Brushing Vegetation management treatments used to brush reforested areas removes competing vegetation from the immediate vicinity of young trees, usually early in a stand development. Brushing frees up nutrients, water and sunlight to increase survival and growth of the new seedlings established. 5 P a g e
Surveys Silvicultural surveys are preformed on all reforested areas throughout the age of a stand. Assessment objectives range from planting and regeneration surveys, to free growing status surveys, to pre-stand tending surveys for treatments like spacing and pruning. Surveys aim to assess the current status and performance of the established new forest. Data collected is used to formulate prescriptions for the next silviculture treatment and to provide stand attribute data for inventory updates. Spacing Spacing removes selected trees from young stands (usually post free growing stands > 15 years of age) to reduce overall stand density and to subsequently reduce light competition primarily. Spacing promotes faster growth, and larger trees of uniform size and shape, which can reduce harvesting and milling costs at the next crop rotation. Spacing can also help produce healthier stands by removing diseased and damaged trees. Pruning Pruning involves the removal of live or dead branches from the stems of trees. Pruning promotes the production of high quality, clear (knot-free) wood. Pruning is performed usually on post free growing stands and usually after a spacing treatment. Uniform spacing is required in order to have uniform inter tree density for good tree crown expansion and rapid healing over cut branch sites. Pruning is also performed in minor cases, to remove diseased lower branches and produce healthier stands. Fertilizing Fertilizers are used to promote tree growth on sites deficient in one or more nutrients. It can help increase the rate of growth and produce larger trees. Broadcast fertilization (either by aerial or manual methods) is usually applied on post free growing stands. Fertilization at the time of planting is a minor treatment utilized to assist with successful seedling establishment. 6 P a g e
Area Harvested (ha) Area Harvested (ha) Provincial Silviculture Summary Charts and Graphs 25 Graph 1: Silvicultural Systems on all Crown Land 2 Partial cutting* 15 Retention 1 5 Clearcutting with reserves Clearcutting * Partial Cutting includes: Shelterwood, Selection, Seed Tree, Patch cut, Intermediate Cut and Coppice Graph 1a: Silvicultural Systems for Coastal Forest Region Shelterwood 45 Selection 4 Seed tree 35 3 25 2 15 1 5 * Old region codes: Vancouver = Coastal Retention Patch cut Not specified Intermediate cut Coppice Clearcut with reserves Clearcut 7 P a g e
Area Harvested (ha) Area Harvested (ha) 1 9 8 7 6 5 4 3 2 1 Graph 1b: Silvicultural Systems for Northern Interior Forest Region Shelterwood Selection Seed tree Retention Patch cut Not specified Intermediate cut Coppice * Old region codes: Prince George, Prince Rupert = Northern Interior Clearcut with reserves Clearcut 12 1 Graph 1c: Silvicultural Systems for Southern Interior Forest Region Shelterwood Selection Seed tree 8 6 4 2 Retention Patch cut Not specified Intermediate cut Coppice * Old region codes: Cariboo, Kamloops, Nelson = Southern Interior Clearcut with reserves Clearcut 8 P a g e
81/82 82/83 83/84 84/85 85/86 86/87 87/88 88/89 89/9 9/91 91/92 92/93 93/94 94/95 95/96 96/97 97/98 98/99 99/ /1 1/2 2/3 3/4 4/5 5/6 6/7 7/8 8/9 9/1 1/11 11/12 12/13 13/14 14/15 Area based on end of (ha) 25 Graph 2: Changes in the Not Satisfactorily Restocked Land (NSR) on All Crown Land 2 15 1 5-5 18 Graph 3: Site Preparation on all Crown Land 16 14 12 Other* Mechanical Burn 1 8 6 4 2 * Other includes: Manual, Chemical and Grass seeding 9 P a g e
35 Graph 3a: Site Preparation on Crown Land Coastal Forest Region 3 25 2 Other Mechanical Burn 15 1 5 * Old region codes Vancouver = Coastal s Graph 3b: Site Preparation on Crown Land Northern Interior Forest Region 5 45 4 35 3 25 2 15 1 5 Other Mechanical Burn s * Old region codes Prince George, Prince Rupert = Northern Interior 1 P a g e
Number of Trees (Milions) 7 6 Graph 3c: Site Preparation on Crown Land Southern Interior Forest Region Other Mechanical Burn 5 4 3 2 1 s * Old region codes Cariboo, Kamloops, Nelson = Southern Interior 3 Graph 4: Number of Trees Planted Each Year 195-214 25 2 15 1 5 Year 11 P a g e
81/82 82/83 83/84 84/85 85/86 86/87 87/88 88/89 89/9 9/91 91/92 92/93 93/94 94/95 95/96 96/97 97/98 98/99 99/ /1 1/2 2/3 3/4 4/5 5/6 6/7 7/8 8/9 9/1 1/11 11/12 12/13 13/14 14/15 & Number of Trees Number of Trees (Milions) Graph 5: Cumulative Total of Trees Planted between 195-214 8, 7, 6, 28 5, 1997 4, 3, 2, 1, Year The four-billionth tree was planted in 1997 and the six-billionth tree in 28 Graph 6: Planting on all Crown Land 3 25 Area (ha) Trees (') 2 15 1 5 12 P a g e
Planted Area (ha) Planted Area (ha) Graph 6a: Planted Area on Crown Land by Forest Region 1 Coastal Northern Interior Southern Interior 9 8 7 6 5 4 3 2 1 *Old region codes: Cariboo, Kamloops, Nelson = Southern Interior; Prince George, Prince Rupert = Northern Interior; Vancouver = Coastal 14 12 Graph 6b: Trees Planted on Crown Land by Forest Region Coastal Northern Interior Southern Interior 1 8 6 4 2 *Old region codes: Cariboo, Kamloops, Nelson = Southern Interior; Prince George, Prince Rupert = Northern Interior; Vancouver = Coastal 13 P a g e
Trees Planted (Milions) Trees Planted (Milions) Graph 7: Species Planted on all Crown Land 1986 to 211 14 12 1 8 6 4 2 86 87 88 89 9 91 92 93 94 95 96 97 98 99 1 2 3 4 5 6 7 8 9 1 11 12 13 14 Pine, lodgepole Spruce, species(3) Douglas-fir Cedar, western red Larch, Western Hemlock, western Fir, Subalpine Fir, amabilis Pine, yellow Pine, western white Other/unspecified Cedar, yellow Fir, grand Fir, Noble Hardwoods Hemlock, mountain Larch, Siberian Tamarack Spruce, Sitka Graph 7a: Species Planted on all Crown Land Coastal Forest Region 14 12 1 8 6 4 2 86 87 88 89 9 91 92 93 94 95 96 97 98 99 1 2 3 4 5 6 7 8 9 1 11 12 13 14 Cedar, western red Douglas-fir Hemlock, western Cedar, yellow Spruce, Sitka Spruce, species(3) Fir, amabilis Hardwoods Pine, lodgepole other/unspecified Fir, grand Fir, Noble Fir, Subalpine Hemlock, mountain Larch, Siberian Larch, Western Tamarack Pine, western white Pine, yellow 14 P a g e
Trees Planted (Milions) Trees Planted (Milions) Graph 7b: Species Planted on all Crown Land Northern Interior Forest Region 8 7 6 5 4 3 2 1 Pine, lodgepole Spruce, species(3) Douglas-fir Cedar, western red Cedar, yellow other/unspecified Fir, amabilis Fir, grand Fir, Noble Fir, Subalpine Hardwoods 86 87 88 89 9 91 92 93 94 95 96 97 98 99 1 2 3 4 5 6 7 8 9 1 11 12 13 14 Hemlock, mountain Hemlock, western Graph 7c: Species Planted on all Crown Land Southern Interior Forest Region 7 6 5 4 3 2 1 Pine, lodgepole Spruce, species(3) Douglas-fir Larch, Western Cedar, western red Pine, yellow other/unspecified Cedar, yellow Fir, amabilis Fir, grand Fir, Noble Fir, Subalpine 86 87 88 89 9 91 92 93 94 95 96 97 98 99 1 2 3 4 5 6 7 8 9 1 11 12 13 14 Hardwoods Hemlock, mountain 15 P a g e
7, Graph 8: Brushing on All Crown Land 1981 to 215 6, Chemical Non-Chemical 5, 4, 3, 2, 1, 9 8 7 6 Graph 8a: Brushing on Crown Land Coastal Forest Region Chemical Non-Chemical 5 4 3 2 1 * Old region codes: Vancouver = Coastal 16 P a g e
3 25 Graph 8b: Brushing on Crown Land Northern Interior Forest Region Chemical Non-Chemical 2 15 1 5 * Old region codes: Prince George, Prince Rupert = Northern Interior 3 25 Graph 8c: Brushing on Crown Land Southern Interior Forest Region Chemical Non-Chemical 2 15 1 5 * Old region codes: Cariboo, Kamloops, Nelson = Southern Interior 17 P a g e
81/82* 82/83* 83/84* 84/85* 85/86* 86/87* 87/88* 88/89* 89/9* 9/91* 91/92* 92/93* 93/94* 94/95* 95/96* 96/97* 97/98* 98/99* 99/* /1* 1/2* 2/3* 3/4 4/5 5/6 6/7 7/8 8/9 9/1 1/11 11/12 12/13 13/14 14/15 14 Graph 9: Silviculture Surveys on All Crown Land 12 1 8 6 4 2 7 6 Graph 9a: Surveys on Crown Land by Forest Region Coastal Northern Interior Southern Interior 5 4 3 2 1 * Old region codes: Cariboo, Kamloops, Nelson = Southern Interior, Prince George, Prince Rupert = Northern Interior, Vancouver = Coastal 18 P a g e
81/82* 82/83* 83/84* 84/85* 85/86* 86/87* 87/88* 88/89* 89/9* 9/91* 91/92* 92/93* 93/94* 94/95* 95/96* 96/97* 97/98* 98/99* 99/* /1* 1/2* 2/3* 3/4 4/5 5/6 6/7 7/8 8/9 9/1 1/11 11/12 12/13 13/14 14/15 6 Graph 1: Juvenile Spacing on All Crown Land 5 4 3 2 1 Graph 1a: Spacing on Crown Land by Forest Region 4 Coastal Northern Interior Southern Interior 35 3 25 2 15 1 5 * Old region codes: Cariboo, Kamloops, Nelson = Southern Interior, Prince George, Prince Rupert = Northern Interior, Vancouver = Coastal 19 P a g e
81/82* 82/83* 83/84* 84/85* 85/86* 86/87* 87/88* 88/89* 89/9* 9/91* 91/92* 92/93* 93/94* 94/95* 95/96* 96/97* 97/98* 98/99* 99/* /1* 1/2* 2/3* 3/4 4/5 5/6 6/7 7/8 8/9 9/1 1/11 11/12 12/13 13/14 14/15 1 Graph 11: Pruning on All Crown Land 9 8 7 6 5 4 3 2 1 Note: Includes pruning for FH reasons Graph 11a: Pruning on Crown Land by Forest Region 5 Coastal Northern Interior Southern Interior 45 4 35 3 25 2 15 1 5 * Old region codes: Cariboo, Kamloops, Nelson = Southern Interior, Prince George, Prince Rupert = Northern Interior, Vancouver = Coastal 2 P a g e
81/82* 82/83* 83/84* 84/85* 85/86* 86/87* 87/88* 88/89* 89/9* 9/91* 91/92* 92/93* 93/94* 94/95* 95/96* 96/97* 97/98* 98/99* 99/* /1* 1/2* 2/3* 3/4 4/5 5/6 6/7 7/8 8/9 9/1 1/11 11/12 12/13 13/14 14/15 35 Graph 12: Fertilization on All Crown Land 3 25 2 15 1 5 Graph 12a: Fertilization on Crown Land by Forest Region 18 16 Coastal Northern Interior Southern Interior 14 12 1 8 6 4 2 * Old region codes: Cariboo, Kamloops, Nelson = Southern Interior, Prince George, Prince Rupert = Northern Interior, Vancouver = Coastal 21 P a g e
Appendix 1 The following are listings of Website inks to detailed tables of the current Silviculture Statistics up to 211, producing the charts and graphs listed above: Silviculture Program Statistics Homepage (Annual Reports of Silviculture Investments and Accomplishments) http://www.for.gov.bc.ca/hfp/silviculture/statistics/statistics.htm Annual Report Silviculture Tables and Graphs by https://www.for.gov.bc.ca/hfp/silviculture/statistics/statistics.htm Pre 26 - http://www.for.gov.bc.ca/mof/annualreports.htm Just the Facts - https://www.for.gov.bc.ca/hfp/publications/1/ Ministry of Forests and Range Annual Reports http://www.for.gov.bc.ca/mof/annualreports.htm 22 P a g e