Stand Age

Stand Age

 

one of the basic valuational criteria which characterize a stand. Stands are divided into classes according to their age. For coniferous and hardleaved deciduous stands grown from seeds, 20-year age classes have been determined; for undergrowth and softleaved deciduous stands grown from seeds, ten-year age classes; and for species of brushwood, five-year age classes. A stand in which the ages of the trees vary within the limits of a single class is considered to be of the same age, whereas if the ages fall within several classes, the stand is considered to be of different ages. The ages of trees are determined by the number of annual layers (rings), as seen on the stumps of sample trees which have been cut down or on a cylinder of wood which is removed from the trunk of a growing tree by a special borer. Another method of determining the age of trees is by external criteria, such as the color of the needles, the form of the crown, and the color and structure of the bark.

References in periodicals archive ?
1] 1035 Stand age year 87 Diameter at breast height cm 23.
Determination of annual organic carbon sequestration in soil and forest floor of Scots pine forests on The Turkmen Mountain (Eskisehir, Kutahya)/Turkmen Dagi (Eskisehir, Kutahya) saricam ormanlarinda toprak ve olu ortude biriken yillik organik karbon miktarinin belirlenmesi
2006) reported that microhabitat and stand age of sand have effects on soil seed viability and seedling development.
Composition of soil seed bank over Cholistan desert microhabitats at Dingarh Fort Area, Pakistan
Thirdly, it is difficult to estimate stand age in forest inventories of large scale.
Preliminary individual tree growth model, site index model <> model for aleppo pine (Pinus haiepensis Mill.) in Chalkidiki (Northern Greece)/Modelo individual preliminar de crescimento de arvore, modelo de indice de local e modelo de "mortalidade" para pinheiro-de-aleppo (Pinus halepensis Mill.) em Chalkidiki (Grecia Do Norte)
Two different stand age groups were formed (5 to 7 years and 8 to 12 years), each with approximately the same number of sample plots, based on statistical tests that showed differences in key attributes, including density, diameter, and volume.
Economic feasibility of utilizing precommercially thinned southern pine as a woody biomass energy source
Enright NJ and Goldblum D (1998) Demography of a nonsprouting and resprouting Hakea species (Proteaceae) in fire-prone Eucalyptus woodlands of south-eastern Australia in relation to stand age, drought and disease.
Premature opening and dimorphism in Hakea decurrens (Proteaceae) follicles: a bet-hedging regeneration strategy?
26] focused on the ant population ratio in natural forests and oil palm plantations, but she had not yet discussed how changes in ant communities in line with the development of peat land with different palm stand age.
Communities of ants (Hymenoptera: Formicidae) in peatland planted with oil palm stands of different age strata
The trajectory of a let-grow forest -- one that is not harvested but left to grow -- is based on the observed rate of live tree carbon by stand age.
Carbon calculator tracks the climate benefits of managed private forests
Douglas-fir forests in the Oregon and Washington Cascades: Relation of the herpetofauna to stand age and moisture.
Abundance of Western Red-backed Salamanders (Plethodon vehiculum) in the Washington Coast Range after headwater stream-buffer manipulation
The working hypotheses of the present research were that root and leaf adaptation strategies differ between tree species and stand age affects tree structure, and leaf and root morphology.
Biomass allocation, leaf and fine root morphological adaptations in young black alder (Alnus glutinosa (L.) Gaertn.), silver birch (Betula pendula Roth.) and Scots pine (Pinus sylvestris L.) plantations on reclaimed oil shale post-mining areas
The files for each stand report stand age, species or forest type, current standing volume, management activities, and costs.
Long-term timber supply from state-owned forests in northeastern China/Production de bois durable des forets d'etat en Chine du nord-est/Suministro a largo plazo de madera de bosques de propiedad estatal en el noreste de China
Although stand age at sites 5 7 was much greater than at the other sites (300-400 v.
Relationships of phosphorus fractions to organic carbon content in surface soils in mature subtropical forests, Dinghushan, China
Normal yield tables provide estimates of expected yields tabulated by stand age and site index for ideal, fully stocked or normal forest stands.
THE YIELD OF NATURAL TREMBLING ASPEN (Populus tremula L.) STANDS (NORTHERN AND EASTERN ANATOLIA)
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