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| MOE > ESD > Ecosystems Branch >Terrain > Types | |||||||||
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Types of Terrain Mapping Projects There are generally 3 main types of terrain mapping projects currently conducted in BC, governed by provincial standards. Types of Terrain Mapping: Illustrations/Comparisons/Contrasts Related Terrain Products: Terrain inventory mapping is a multi purpose inventory of the surficial geology, geological processes and geomorphological features in the landscape. It follows the Terrain Classification System for British Columbia and is intentionally generic in nature so as to serve a variety of land use planning and management needs. Other forms of terrain mapping can be derived from this type of terrain map with review, modification and field verification. Using terrain inventory mapping for specific purposes requires the expertise of a professional terrain mapper. Existing terrain inventory maps are a good source of background information for a variety of applications. Terrain stability mapping is an enhanced method of terrain mapping that identifies areas prone to landslides and slope failures. Terrain stability maps usually contain information about terrain, soil drainage, slope steepness and terrain stability classes. Terrain stability or slope stability is the susceptibility of a terrain polygon to slope failure. Each terrain polygon is rated to indicate relative stability using a qualitative scale. Classes may have some quantitative descriptions relating to slide frequency and magnitude. Additional features related to stability are indicated using on-site symbols. These include landslide headscarps, debris flow tracks, tension cracks, and gullies. It is important to read the project report and familiarize yourself with the criteria used for the evaluation of slope stability and to understand the limitations of the mapping. There are two types of terrain stability maps: reconnaissance and detailed terrain stability mapping. The table below describes the standard characteristics:
Bioterrain mapping is a modified method of terrain mapping that focuses on the attributes that influence ecology. It is an integral step to terrestrial ecosystem mapping. Bioterrain mapping is a component of an interdisciplinary product that shares common polygon linework. Terrestrial ecosystem mapping contains terrain, ecological, climatologically, drainage and sometimes wildlife information. It provides a powerful tool that can be used to make multidisciplinary queries. Illustrations/Comparisons/Contrasts The following documents and links illustrate, summarize and compare the three types of mapping. The purpose of these documents is to assist industry clients of terrain mapping in determining the type of mapping best suited for their information needs, and to assist data users in better understanding the existing datasets.
Subset Products - Select Terrain Attributes Another type of inventory related to terrain is being collected for some modelling applications such as PEM. Select terrain attributes are also collected for landslide inventories. Select terrain attributes are specific to the project objectives. There are currently no RISC standards governing this type of mapping. However, if attributes related to soils, terrain or surficial geology are collected a qualified professional should be hired to do the mapping. Where possible, and as applicable standard field names and associated coding following Terrain or Soils Standards should be used (see: Standards page). Sign off by the professional should be part of the deliverables. Project managers may contact the terrain and soils data custodians at soilterrain@victoria1.gov.bc.ca to discuss proposed coding and methodology. Related Terrain Mapping Products
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