Nettet1. jun. 1986 · For sampling tractor-logged residues with a fixed total length of transect, we recommend sampling with one randomly located and oriented transect line per … Nettetpling is called line intersect sampling or LIS (O’Brien 1989, Jennings et al. 1999, Williams et al. 2003). Instead of a grid, transects (or ‘lines’) are used. The points on the lines …
Accuracy of the line intersect method of post-logging sampling …
NettetWARREN and OLSEN (1964) published a “line intersect technique” which they propagated as a method to obtain quickly volume estimates of logging residue on … NettetAPPLICATION OF LINE INTERSECT SAMPLING 745;S ' - sL L' Figure I where m is a constant for given L and A. The region of the area 2aiL, symmetric about L'L", is assumed to be entirely within the area A. As the probability of intersection of ellipse i is proportional to a measure of its size, ai, we have sampling with selection probabilities pro- ear nose throat associates fort wayne
Quantitative Estimation of Logging Residues by Line-Intersect …
Nettettransect lines is line transect sampling. Much of the material on line transect sampling has been brought together in Buckland et al. (2001) and Thomas et al. (2010) which provide a detailed reference for these methods. Here I will summarize the general procedures of line transect sampling and highlight the assumptions you must make to … Nettet1. mai 1996 · Line intersect sampling (LIS) is commonly used to measure the fraction of forest area under canopy gaps (gap fraction) and the size distribution of gaps. The typical application of this technique makes assumptions about the shape of the gaps. Potential errors associated with these assumptions were quantified. Nettet19. okt. 2024 · The linkage between δ2H and δ18O of soil water and precipitation provides a way of understanding precipitation infiltration, residence time, and soil water source. Soil water at 0–5, 15–20, and 40–45 cm depths and event-based precipitation were collected in a subtropical forest plantation. Correlations between the δ18O of soil water and … ear nose throat associates of ny