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Private Sector Softwood Removals Survey
Introduction
The Private Sector Softwood Removals Survey is an annual survey conducted by the Forestry Commission (in association with the Forest Service) of a sample of harvesting companies in the UK.
The survey, which previously covered harvesting companies in Great Britain only, was extended in 2004 to include harvesting companies in Northern Ireland. Figures for Northern Ireland in earlier years have therefore been estimated, based on responses to the 2004 survey.
Figures are published as UK totals and by country (England, Wales, Scotland, Northern Ireland).
Data collected
The questionnaire used for the Private Sector Softwood Removals Survey (available at www.forestresearch.gov.uk/tools-and-resources/statistics/about-our-statistics/surveys/private-sector-softwood-removals-survey/) is issued annually to around 40 harvesting companies, to collect information on:
Response rates
The questionnaire was issued to 40 harvesting companies for the collection of 2017 data, of which 31 responded, giving a response rate of 78%. These respondents are estimated to account for around 95% of all the softwood harvested by companies covered by the survey.
Private Sector Softwood Removals Survey Response Rates, 2008-2017
Year | Forms issued | Responses received | Response rate1 | Weighted response rate2 |
2008 | 41 | 35 | 85% | 100% |
2009 | 40 | 30 | 75% | 92% |
2010 | 40 | 30 | 75% | 97% |
2011 | 37 | 26 | 70% | 96% |
2012 | 37 | 27 | 73% | 95% |
2013 | 40 | 28 | 70% | 96% |
2014 | 39 | 30 | 77% | 97% |
2015 | 40 | 27 | 68% | 94% |
2016 | 40 | 26 | 65% | 94% |
2017 | 40 | 31 | 78% | 95% |
Notes:
1. Response rates are calculated as the number of responses received divided by the number of forms issued.
2. Weighted response rates have been calculated from the 2008 survey onwards. They are an estimate of the proportion of the softwood harvested by companies covered by the survey that is accounted for by respondents.
.. Denotes data not available.
Methodology
A review of the methodology used to estimate total private sector softwood removals (including businesses not covered by the survey) was undertaken in 2011-2012.
The “Methodology Review of Softwood Removals from Non-FC/FS Woodland” paper presents the results from this review and the implications of the change in methodology. The paper is available at www.forestresearch.gov.uk/tools-and-resources/statistics/about-our-statistics/methodology-and-outputs/.
In the current methodology, businesses not covered by the survey are assumed to represent 15% of the total softwood removals from private sector woodland. This fixed percentage is applied from 2006 onwards. This figure is currently under review.
Quality
Detailed information on the survey quality is available in the “Quality Report: Private Sector Softwood Removals Survey” at www.forestresearch.gov.uk/tools-and-resources/statistics/about-our-statistics/code-of-practice/quality-of-official-statistics/.
Further quality information on FC Official Statistics is available at: www.forestresearch.gov.uk/tools-and-resources/statistics/about-our-statistics/code-of-practice/quality-of-official-statistics/.
Revisions
Results from the Private Sector Softwood Removals Survey may be revised between the provisional figures published in the First Release “UK Wood Production and Trade: provisional figures” and the final data published in “Forestry Facts & Figures” and “Forestry Statistics”, to take account of late returns and the results of additional data quality checking procedures.
In order to use the most accurate information possible in estimating total private sector softwood removals, figures for non respondents in earlier years are estimated wherever possible, using their responses in previous and in subsequent years. This may cause the estimates for all previous years to be revised when new data are received from a former non-respondent. This process reduces the potential over-inflation of estimated removals which can be caused by harvesting companies tending to respond when removals have increased but being less likely to do so when their removals have reduced.
Figures for 2017 are final; provisional figures were previously released in “UK Wood Production and Trade: 2017 provisional figures”. Figures for 2017 and earlier years have not been revised from those in “UK Wood Production and Trade: 2017 provisional figures”. Information on revisions made since “Forestry Statistics 2017” are provided in “UK Wood Production and Trade: 2017 provisional figures”.
Release schedule
Provisional figures for 2018 will be released on 16 May 2019 in “UK Wood Production and Trade: 2018 provisional figures”.
Final figures for 2018 will be released on 26 September 2019 in “Forestry Statistics 2019” and “Forestry Facts & Figures 2019”.
Chapter 2: UK-Grown Timber
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