نتایج جستجو برای: fixed sample plot
تعداد نتایج: 623598 فیلتر نتایج به سال:
Abstract Distribution of tree diameters in a stand is characterized using models that predict diameter moments and/or percentiles conjunction with mathematical system to recover the parameters an assumed statistical distribution. Studies have compared Weibull distribution recovery systems but arrived at different conclusions regarding best approach for recovering stand’s from predicted stand-le...
Concerns about the efficiency and the reliability of point sampling to estimate change in forest growth variables have been expressed ever since point sampling appeared in the literature more than 60 years ago. Change estimators for point samples based on point-to-tree distance in variable-radius plots were introduced about 30 years ago but are rarely implemented despite easy access to point-to...
hyrcanian forests in northern slope of alborz support high bird richness and abundance same as central of europe. in this study, efficiency of different methods including fixed-width transect, variable-width transect, fixed-radius point count and variable circular plot samplings were compared in order to present the most reliable methods for surveying and monitoring of diurnal forest birds in f...
Introduction My research project consists of building a story generator which will explore the use of reader modelling for plot generation. The project will make use of an emerging body of work at the intersection of literature and psychology that investigates reader engagement. Although there are existing systems that use formal reader models in a narrative generation context, most of them are...
This paper deals with a proposal for joint modeling and process optimization split-plot designs analyzed through mixed response surface models. It addresses the following main issues: i) building of responsesurface model multiple situation, by defining only one which specific coefficients areincluded studying association among responses; ii) considering fixed as well random effects within conte...
Automatic Stem Mapping by Merging Several Terrestrial Laser Scans at the Feature and Decision Levels
Detailed up-to-date ground reference data have become increasingly important in quantitative forest inventories. Field reference data are conventionally collected at the sample plot level by means of manual measurements, which are both labor-intensive and time-consuming. In addition, the number of attributes collected from the tree stem is limited. More recently, terrestrial laser scanning (TLS...
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