Correction for slope in point and transect relascope sampling of downed coarse woody debris

Ståhl, Göran; Ringvall, Anna; Gove, Jeffrey H.; Ducey, Mark J.

doi:10.1093/forestscience/48.1.85

Sammanfattning

Two different possibilities to correct for bias due to slope are presented. The first one involves using a slightly modified relascope device and making a measurement of the angle of inclination of each sampled object. The second involves applying correction factors based on the steepness of the terrain in the area surveyed. However, it is shown that moderate slopes cause only limited bias and in such cases there is little need to adjust the measurement procedures or apply correction factors.

Nyckelord

angle gauge sampling; bias; Bitterlich sampling; correction factor; forest inventory; line intercept sampling

Publicerad i

Forest Science
2002, volym: 48, nummer: 1, sidor: 85-92
Utgivare: SOC AMER FORESTERS

SLU författare

Ståhl, Göran
- Institutionen för skoglig resurshushållning och geomatik, Sveriges lantbruksuniversitet
Hedström Ringvall, Anna
- Institutionen för skoglig resurshushållning och geomatik, Sveriges lantbruksuniversitet

UKÄ forskningsämne

Skogsvetenskap

Publikationens identifierare

DOI: https://doi.org/10.1093/forestscience/48.1.85

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/41901