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A tree inventory is the gathering of accurate information on the health and diversity of a

community forest Community forestry is an evolving branch of forestry whereby the local community plays a significant role in forest management and land use decision making by themselves in the facilitating support of government as well as change agents. It involv ...

Uses

Tree inventories focus on the attributes of individual trees, as compared to a

forest inventory Forest inventory is the systematic collection of data and forest information for assessment or analysis. An estimate of the value and possible uses of timber is an important part of the broader information required to sustain ecosystems. When taki ...

which seek to assess timber attributes on forest stands. Information such as how many street trees there are, what their species is, and their condition is gathered. A community forest cannot be effectively managed unless its condition is known. A tree inventory may be conducted for many reasons, such as to determine if a community needs to implement an

urban forestry Urban forestry is the care and management of single trees and tree populations in Urban area, urban settings for the purpose of improving the urban environment. Urban forestry involves both planning and management, including the programming o ...

program, in order to prioritize tree maintenance needs, to plan for the community's future, and to provide a basis for the implementation of a management plan. A tree inventory should provide tree species, preferably in

binomial nomenclature In taxonomy, binomial nomenclature ("two-term naming system"), also called nomenclature ("two-name naming system") or binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, bot ...

(Latin names), size, such as DBH (diameter at breast height) and tree height, crown width, overall condition such as health and maintenance needs, overcrowding, possible problems, presence or absence of insects or diseases. Characteristics of the site should also be listed such as soil type and condition, root space, and safety.

Types

There are four main types of tree inventory. They are specific problem inventory, partial inventory, complete inventory, and cover type inventory. A specific problem inventory gathers data on one particular problem such as looking at the effects of

Hemlock Woolly Adelgid The hemlock woolly adelgid (; ''Adelges tsugae''), or HWA, is an insect of the order Hemiptera (true bugs) native to East Asia. It feeds by sucking sap from hemlock and spruce trees (''Tsuga'' spp.; ''Picea'' spp.). In its native range, HWA ...

Dutch elm disease Dutch elm disease (DED) is caused by a member of the sac fungi (Ascomycota) affecting elm trees, and is spread by elm bark beetles. Although believed to be originally native to Asia, the disease was accidentally introduced into Americas, America ...

. A partial inventory uses sampling where only a subset of the trees in the community are observed to draw inferences on the whole forest. A complete inventory collects data from all trees in the population, and a cover type survey is a survey where some of the information gathered is usually done through

aerial photography Aerial photography (or airborne imagery) is the taking of photographs from an aircraft or other airborne platforms. When taking motion pictures, it is also known as aerial videography. Platforms for aerial photography include fixed-wing aircra ...

and

GIS A geographic information system (GIS) is a type of database containing Geographic data and information, geographic data (that is, descriptions of phenomena for which location is relevant), combined with Geographic information system software, sof ...

systems. This type of survey is being increasingly used in urban areas. These inventories are generally conducted by student groups and volunteers, or contracted to urban forestry consultants, or by municipal urban foresters using either handwritten methods, software, templates, or PDAs.

References

{{Forestry Forest management