index to estimate the current moisture content of the forest floor
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index to estimate the current moisture content of the forest floor by C. E. Van Wagner

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Published by Dept. of Fisheries and Forestry, Canadian Forestry Service in [Ottawa] .
Written in English


  • Forest fire forecasting.,
  • Moisture index.

Book details:

Edition Notes

Statementby C. E. Van Wagner.
SeriesPublication ;, no. 1288, Publication (Canadian Forestry Service) ;, no. 1288.
LC ClassificationsSD421 .V33
The Physical Object
Paginationiv, 23 p.
Number of Pages23
ID Numbers
Open LibraryOL5323518M
LC Control Number72176203

Download index to estimate the current moisture content of the forest floor


  wood moisture content has existed (at least) since an early Forest Products Lab publication (). Koehler and Thelen () state “There is a definite relation between the moisture content of wood and the relative humidity of the atmosphere at any given temperature.” One of the earliest uses of the term “equilibrium moisture content It has been noted (Chap. ) that two general types of electrical moisture meters have been used to estimate the moisture content of wood. These are resistance meters which measure essentially the direct current (DC) electrical resistance, and dielectric moisture meters which measure some function of the complex dielectric constant or   Percent moisture content in wood is the ratio of the weight of water compared to the overall weight of a piece of wood. A 10% moisture content reading means that 10% of a wood sample’s weight is due to water in the wood. If a board reads % (Difficult to measure accurately) then the weight of the water equals the weight of that :// Live fuel moisture content is an important variable for assessing fire risk. Satellite observations provide the potential for monitoring fuel moisture across large areas. The objective of this study was to use data from the Moderate Resolution Imaging Spectroradiometer to monitor live fuel moisture content of three fire-prone vegetation types (shrubland, heathland and sclerophyll forest) in

Background Information Canadian Forest Fire Weather Index (FWI) System Summary. The Canadian Forest Fire Weather Index (FWI) System consists of six components that account for the effects of fuel moisture and weather conditions on fire behavior.. The first three components are fuel moisture codes, which are numeric ratings of the moisture content of the forest floor and other dead organic ://   dropped, it has too much moisture for compaction. hand test Figure 9 Types of tests Tests to determine optimum moisture content are done in the laboratory. The most common is the Proctor Test, or Modified Proctor Test. A particular soil needs to have an ideal (or optimum) amount of moisture to achieve maximum density. This is Forest soils, where soil formation has been influenced by forest vegetation, are generally characterized by deeply rooted trees, significant ‘litter layers’ or O horizons, recycling of organic matter and nutrients, including wood, and wide varieties of soil-dwelling organisms (Figure 1).There are also soils now covered with forest vegetation, often plantations, on lands that were not   The sensible heat ratio is useful in finding G, the moisture content of air, at different conditions using a psychrometric chart. 5. Psychrometric Chart A psychrometric chart is a graphical representation of the properties of moist air and is a useful tool in

  as a function of moisture content and several common definitions of specific gravity. System for Determining Wood Density The common definition of wood moisture content on a dry basis can be written as (1) where Wg is the green weight of wood (pounds or kilograms) at moisture content M (percent), and Wd is the oven-dry weight of ://   Moisture meters are great but only accurrate in the 8 to 20% moisture content range. The most accurrate method is drying a small piece in the oven( degrees F). Weigh the sample prior to drying. Keep weighting until the weight does not change. This is the point at which no moisture is left in the wood or oven ://   the ability of silviculture sureyors to estimate site index – one of the key variables that needs to be considered for effective forest management decision making. Learning Objectives The model can be used to predict fuel moisture content by a book-keeping method. The predictions agree well with the observations for all three of our data sets. Keywords: buttongrass moorland