Provincial Site Productivity Layer
The provincial site productivity layer Version 7.0 has been updated over the previous version (v6.1) with the inclusion of 11 new or revised units, as follows:
- An updated SIBEC crosswalk table was used to precisely map changes in BGC Unit and Site Series Codes;
- Inclusion of new Coastal EBM TEM Phase 7, Masset Inlet Landscape Unit (LU) TEM, Louise Island LU TEM, Lower Yakoun LU TEM, Yakoun Lake LU TEM, Mt Maxwell TEM and Ecological Assessment, Salt Spring Island Parks and Ecological Reserves TEM and Conservation Assessment, Haida Gwaii TEM 2016-17, Northeast Moberly Grizzly Bear Population Unit (GBPU), South Okanagan Gap Areas 2010, and Kootenay Lake PEM
As with ver. 6.1, two different editions of the site productivity dataset are made available: one named “Site Prod with Approved PEM/TEM” that uses only the PEM/TEM datasets that have undergone and passed a third party accuracy assessment, or that used an Ecosystem Survey Intensity Level (ESIL) of 1 to 5 during the PEM or TEM mapping process, and another named “Site Prod with All PEM/TEM” which incorporates all of the PEM/TEM datasets which is available upon special request. See Appendices B and C in the technical document for a detailed list and maps of the PEM/TEM datasets used in each edition of the provincial site productivity dataset.
The provincial site productivity layer project was commenced in 2011 as a Land Based Investment Strategy (LBIS) funded project. This work has been an integral part of the Land Based Investment Strategy (LBIS) program needs and the Provincial Site Productivity Strategic Project Plan (2014-2016) developed by Forest Analysis and Inventory Branch (FAIB). LBIS requested FAIB to plan and lead the improvement of access to site productivity information as one of its key strategic goals over the 2010/11 to 2015/16 period. Successful completion of this work meets one of LBIS’s highest program goals since current and comprehensive site productivity information is a critical foundation piece for all sound forest management decisions and practices. Year 8 updates build upon the previous years’ data and consist of a seamless site productivity layer with priority PEM and TEM data cleaned and loaded together with a biophysical model developed in-house. When assessing which data to clean and load the project team focused on filling information gaps in the higher LBIS priority units first and selected the most current PEM or TEM information available for these units. As with the Year 7 site productivity layer, the bio-physical model is used to fill-in any gaps where no PEM or TEM data of any vintage or level of accuracy was available for these areas, or where SIBEC site index estimates were lacking.
Provincial Site Productivity Layer Documents
- Site Index Standard Operating Procedures (SOP) (revised 4.3 - 7th July 2014) [download]
- Provincial Site Productivity Layer Year 7 Project Plan [download]
- PEM/TEM-SIBEC and Biophysical Analysis Version 7.0 [download]
- Appendix C - Discrepancy Report [download]
- SI Validation report: [link] (https://www.for.gov.bc.ca/hfd/pubs/Docs/Tr/TR085.htm)
Provincial Site Productivity Layer Coverage
To view at larger scale, please click on image
Year 7 Coverage for Site Productivity Layer:
All PEM/TEM Data for Site Productivity Layer, Version 7.0 (2019/2020)
PEM/TEM data coverage incorporated in the “All PEM/TEM Data for the Site Productivity Layer, Version 7.0” edition of the Site Productivity dataset consists of all available PEM/TEM datasets, including those with low or unknown accuracy. This map displays the study area boundaries of all known PEM/TEM projects regardless of accuracy assessment (AA) and/or ecosystem survey intensity level (ESIL). Note, AA has not been performed on all PEM/TEM data and the ESIL varies from project to project. This dataset is only available upon request.
Approved PEM/TEM Data for Site Productivity Layer, Version 7.0 (2019/20)
PEM/TEM data incorporated in the “Approved PEM/TEM Data for Site Productivity Layer, Version 7.0” edition of the Site Productivity dataset consists of only those PEM/TEM datasets that have passed a third party accuracy assessment, or that utilized a suitable number of field sample sites during mapping process, typically ESIL levels 1-5. The more intensive the level of field sampling conducted during the mapping process is considered to result in a greater degree of thematic map reliability.
Access to the Database & PDF Maps Catalogue
Access to the raw GIS data and to the PDF maps catalogue has been changed in 2019 to reflect the addition of four new TSAs: Cascadia, Great Bear Rainforest South, Great Bear Rainforest North, and Pacific. Version 7.0 of the provincial site productivity data is now available through a new user interface referred to as a data mashup framework or DMF which is accessed through the following link:
Conditions on Uses of this Data
The information provided in this provincial site productivity layer is based on the best known and most current information as of June 30, 2019. All of the content is provided “as is” without warranty of any kind, whether expressed or implied. Under no circumstances will the Government of British Columbia be liable to any person or business entity for any direct, indirect, special, incidental, consequential, or other damages based on any use of this data. All of the data used in the production of the site productivity layer has been reviewed and any known errors corrected, however end users should always use this information in conjunction with local knowledge and expertise. The information contained in this GIS layer is not intended to replace more accurate site specific data, if available.
Catalogue of Adobe Format Maps of Site Index by Species
For those tree species with a limited geographic distribution in BC, the site index coverage on the PDF maps and in the Hectares BC map will generally reflect this distribution. However, some maps may have low coverage for a species due to very limited site productivity data, specifically red alder (Dr), tamarack (Lt), whitebark pine (Pa) and grand fir (Bg)
Hectares BC Website and Data Catalogue
Site index by species data from the provincial site productivity layer (Ver. 5.0) has been loaded into Hectares BC so that users of this information can thematically view the data with standardized spatial themes and queries available in Hectares BC on-line. This access and capability was provided in order to expand the options end users of this information have for looking at this data and running queries. Hectares BC can be accessed through the following link http://hectaresbc.ca/app/habc/HaBC.html
Users can also access the information through the associated Data Catalogue webpage at: http://catalogue.data.gov.bc.ca/dataset/site-productivity-site-index-by-tree-species