登入選單
返回Google圖書搜尋
Determining Individual Tree Shade Length
Kathleen Geier-HayesMark A. HayesDouglas D. Basford
其他書名
A Guide for Silviculturists
出版DIANE Publishing, 1998-05
主題Nature / Ecosystems & Habitats / Forests & RainforestsScience / Life Sciences / Botany
ISBN07881430349780788143038
URLhttp://books.google.com.hk/books?id=s1k7n2VN8qAC&hl=&source=gbs_api
EBookSAMPLE
註釋Shade may be critical through the summer for conifer regeneration survival on warm, dry sites. Shadow lengths vary by latitude, aspect, & slope; southerly aspects have shorter shadows than northerly aspects at the same time. Differently shaped trees also produce different shadow lengths. This guide provides silviculturists with a method for determining tree shadow lengths in a straight line from the tree's base to the shadow tip from southern Utah to northern Idaho for May 10 through Oct. 11 on different slopes, aspects, & for two tree shapes. Charts & tables.