Efficiency of sector sampling for estimating juniper forest attributes vs. fixed area plot
نویسندگان
چکیده
منابع مشابه
Comparison of Area-Based and Individual Tree-Based Methods for Predicting Plot-Level Forest Attributes
Approaches to deriving forest information from laser scanner data have generally made use of two methods: the area-based and individual tree-based approaches. In this paper, these two methods were evaluated and compared for their abilities to predict forest attributes at the plot level using the same datasets. Airborne laser scanner data were collected over the Evo forest area, southern Finland...
متن کاملcomparing efficiency of fixed-radius point count, variable-radius circular plot, fixed-width transect and variable -width transect methods to estimate richness and abundance for forest birds
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...
متن کاملK-Nearest Neighbor Estimation of Forest Attributes: Improving Mapping Efficiency
—This paper describes our efforts in refining k-nearest neighbor forest attributes classification using U.S. Department of Agriculture Forest Service Forest Inventory and Analysis plot data and Landsat 7 Enhanced Thematic Mapper Plus imagery. The analysis focuses on FIA-defined forest type classification across St. Louis County in northeastern Minnesota. We outline three steps in the classifica...
متن کاملThe efficiency of sampling indices in estimating the spatial pattern of wooden species in central zagros forests (Kalkhani forest in Kouhdasht, Lorestan province, Iran)
It is so important to apply suitable methods to have a reliable estimation of the spatial distribution of trees. This research was aimed to determine and evaluate the spatial pattern of five species by distance- and density-based indices (Quercus brantii, Acer moncepesulanum, Crataegus aronia, Pistacia atlantica & Amygdalus lycioides) in the Kalkhani Forest in Koudasht Lorestan province, Iran. ...
متن کاملevaluation of k-tree distance and fixed-sized plot sampling in zagros forests of western iran
three k-tree distance and fixed-sized plot designs were used for estimating tree density in sparse oak forests. these forests cover the main part of the zagros mountain area in western iran. they are non-timber-oriented forest but important for protection purposes. the main objective was to investigate the statistical performance of k-tree distance and fixed-sized plot designs in the estimation...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Forest Science
سال: 2017
ISSN: 1212-4834,1805-935X
DOI: 10.17221/22/2017-jfs