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Juvenile Height Models for Lodgepole Pine and Interior Spruce
Gordon Donald NighBritish Columbia. Forest Science Program
其他書名
Validation of Existing Models and Development of New Models
出版British Columbia, Forest Science Program, 2004
主題Business & Economics / Industries / AgribusinessNature / Plants / TreesTechnology & Engineering / Agriculture / Forestry
ISBN07726519309780772651938
URLhttp://books.google.com.hk/books?id=zo3gny7oQD8C&hl=&source=gbs_api
註釋Juvenile height models have been developed with data collected from a small area of British Columbia for lodgepole pine and interior spruce. The purpose of the project described in this report is to validate these models with data from six biogeoclimatic zones where lodgepole pine & interior spruce commonly occur. Trees were sampled from plots in each zone and annual height was measured directly from pith nodes. A rigorous validation procedure was applied to validate the models for the province as a whole and on a zonal basis. A slight bias revealed in the models led to refitting of new models to the new data. A small validation of the new model for lodgepole pine demonstrates whether it is adequate for use in the interior Douglas fir zone.