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Google圖書搜尋
Summary of Nutrient and Biomass Data from Two Aspen Sites in Western United States
Robert S. Johnston
Dale L. Bartos
出版
Department of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station
, 1977
URL
http://books.google.com.hk/books?id=ndJlW5znA-0C&hl=&source=gbs_api
EBook
FULL_PUBLIC_DOMAIN
註釋
Summary tables are presented for aboveground biomass and nutrient concentrations for 20 aspen trees (Populus tremuloides Michx.) that were sampled at two study sites in Utah and Wyoming. Trees were divided into seven components - leaves, current twigs, old twigs, deadwood (branches), branches, bark, and bole wood. Samples from each component were analyzed for nitrogen, phosphorus, potassium, calcium, sodium, magnesium, zinc, iron, and percent ash.
