Nilsen_1992_SI_prediction_vegetation_Norway: Site index estimation from vegetation type and site...

In Silviculturalist/forester: Forest Science and Forestry

Site index estimation from vegetation type and site properties in Norway.

Description

Site index estimation from vegetation type and site properties in Norway.

Usage

Nilsen_1992_SI_prediction_vegetation_Norway(
  species = "Picea abies",
  vegetation = 1,
  soil_depth = 3,
  hillside = FALSE,
  latitude,
  altitude
)

Arguments

species	One of "Picea abies" (default), or "Pinus sylvestris"
vegetation	Code from [forester::Nilsen_1992_vegetation_types()]
soil_depth	Integer. 1: less than 10 cm, 2: 10-30cm; 3: 30-100cm, 4: 100cm+
hillside	TRUE or FALSE (default).
latitude	Decimal latitude (only used for Norway Spruce).
altitude	Meters above sea level.

Details

• Spruce: R^2 = 0.62 (sd 16%)

• Pine: R^2 = 0.56 (sd 21%)

Largest deviation on high site indices for spruce (3 m.)

Value

Estimated Site Index H40 [forester::Tveite_1976_height_trajectory_Norway_Pine()][forester::Tveite_1977_height_trajectory_Norway_Norway_Spruce()]

Source

Nilsen, P. & Larsson, J. 1992. Bonitering av skog ved hjelp av vegetasjonstype og egenskaper ved voksestedet. (Site index estimation from vegetation type and site properties). Rapp. Skogforsk 22/92:1-43. Available online (15/03/2022):https://nibio.brage.unit.no/nibio-xmlui/handle/11250/2677459?show=full&locale-attribute=en

Silviculturalist/forester documentation built on April 20, 2024, 2:13 p.m.