Looking for abbreviations of mfra? It is mature forest retention area. What does mfra stand for? Mfra stands for mature forest retention area. This definition appears very rarely and is found in the following acronym finder categories science, medicine, engineering, etc. retention levels, in terms of the area or wood volume retained, can range more than fortyfold, varying from sometimes as low as 13 of the harvested volume in finland to more than 30 in some state forests in tasmania (see table s1) and more than 40 in forests managed by some first nations (the governments of canadian indigenous peoples) on vancouver island, british columbia, in. Forest stewardship plan bc timber sales 100 mile house timber supply area kamloops business area 7 1 administration and interpretations 1. 1 definitions in this fsp access ontrol means a barrier located on a road which makes the road beyond the access control point impassable with a motor vehicle as defined under the motor vehicle act. While construction activities by private citizens dont fall under this law, the impact of the maryland reforestation law on the statewide greenscape cover is huge. Replacement of forest cleared for highway construction must be accomplished on an acre-for-acre, one to one ratio on public lands and within a two years or three growing seasons of the completion of the project. Forest management is largely driven by legal frameworks and benefits accruing to managers and owners. Some of these could effectively require or incentivize proforestation. Proforestation could be mandated on portions of federal and state public lands, with the goal of sequestering carbon and promoting mature forest habitat. Procedures for submitting forest cover retention data to results edition 1. List of terms used definitions and explanations note this section describes how results nomenclature is used to ensure consistent interpretation of various silvicultural systems, retention and residuals, and their forest cover attribute information. In softwoods, it is known that there is a problem with using the juvenile wood as structural lumber and pulp because it has a lower density, shorter cell length, larger microfibril angle (mfa) of the s. 2 layer, and poor mechanical properties compared with mature wood (shiokura 1982, bendtsen and senft 1986, clark and saucier 1989, zobel and van buijtenen 1989). Such as the transition zone from mixed forestgrasslands to pure grasslands, the capability of the riparian area to produce trees is limited. Such situations can be addressed through subsection (a) by appropriately adjusting the basal area and tree retention standards to more appropriately reflect mature forest conditions on the specific site. The retention system can also appear somewhat similar to the clearcut with reserves systemhowever, there are two major differences. The retention system requires individual trees or groups of trees to be distributed over the entire area of the cutblock.