搜索结果: 1-5 共查到“林学 southern British Columbia”相关记录5条 . 查询时间(0.136 秒)
An integrated management system for the Douglas-fir tussock moth in southern British Columbia
biological control defoliation Douglas-fir tussock moth forest pest management interior Douglas-fir nuclear polyhedrosis virus
2010/8/31
An integrated, long-term system to detect and treat infestations of Douglas-fir tussock moth in the Southern Interior of British Columbia was successfully implemented between 1984 and 1999. All aspect...
Influence of past forestry practices on western spruce budworm defoliation and associated impacts in southern British Columbia
impact Choristoneura occidentalis Pseudotsuga menziesii stand structure understorey mortality
2010/8/31
The western spruce budworm, Choristoneura occidentalis Freeman, is a native defoliator of interior Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) forests in British Columbia. Repeated budworm defo...
Distribution and abundance of birds relative to elevation and biogeoclimatic zones in coastal old-growth forests in southern British Columbia
Distribution abundance of birds elevation biogeoclimatic zones coastal old-growth forests British Columbia
2009/2/11
This study examined birds and their association with forest structure and elevation in 1992 and 1993. The research sites were located in old-growth forest stands (251+ years) distributed between 400 a...
An empirical approach to predicting water quality in small streams of southern British Columbia using biogeoclimatic ecosystem classifications
baseflow biogeoclimatic ecosystem classification British Columbia conductivity
2009/2/11
Water quality data from a synoptic survey of low-order streams (n = 581) were investigated as a function of the biogeoclimatic zone and moisture subzone groupings of the biogeoclimatic ecological clas...
Lodgepole pine nutrition and growth on grazed forest cutblocks in southern British Columbia
Lodgepole pine nutrition grazed forest cutblocks southern British Columbia
2009/2/5
Forest grazing occurs on replanted or naturally regenerated cutblocks, giving temporary grazing opportunities for
British Columbia’s beef industry. However, grazing on forest cutblocks sometimes resu...