Comparison ofT-Square, Point Centered Quarter, andN-Tree Sampling Methods inPittosporum undulatumInvaded Woodlands
نویسندگان
چکیده
منابع مشابه
Quantitative Analysis by the Point-Centered Quarter Method
This document is an introduction to the use of the point-centered quarter method. It briefly outlines its history, its methodology, and some of the practical issues that inevitably arise with its use in the field. Additionally this paper shows how data collected using point-centered quarter method sampling may be used to determine importance values of different species of trees and describes se...
متن کاملA Comparison Between Square and Hexagonal Sampling Methods for Pipeline Image Processing
The majority of machine vision systems derive their input data by digitising an image to produce a square grid of sampled points. However, other sampling techniques can represent equal picture information in a smaller number of samples, with a consequent reduction in data rate. Several workers have looked at regular hexagonal sampling of images which produces optimum data rates for a given info...
متن کاملAn Assessment of the Point-centred Quarter Method of Plotless Sampling in Some New Zealand Forests
In most fields of natural science, the density of individuals is usually determined from counts in defined areas of known dimensions. When tree density is being measured, the delimitation of plots of up to a hectare or acre in area, presents some difficulties and is time-consuming. Because of the reciprocal relationship between. density and nearness of individuals to one another it is necessary...
متن کاملComparison of splitting methods on survival tree.
We compare splitting methods for constructing survival trees that are used as a model of survival time based on covariates. A number of splitting criteria on the classification and regression tree (CART) have been proposed by various authors, and we compare nine criteria through simulations. Comparative studies have been restricted to criteria that suppose the survival model for each terminal n...
متن کاملComparison of One-point and Two-point Methods for Estimation of Infiltration Parameters in Furrow Irrigation
Infiltration is one of the most important hydraulic parameters affecting surface irrigation and one ofthe most difficult parameters in practical field determinations. The infiltration equations are used todescribe water flow hydraulics and surface irrigation systems design. But determination of theparameters in these equations are costly and time consuming. Therefore, some estimating methods ar...
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: International Journal of Forestry Research
سال: 2017
ISSN: 1687-9368,1687-9376
DOI: 10.1155/2017/2818132