International Union Forest Research Organization

The maximum immission values for SO2 as suggested by the German Association of Engineers (VDI) were strongly influenced by such experiments (Table 2). The even lower and stricter air quality standards to protect forests proposed by the International Union of Forest Research Organization (lUFRO) relate, on the contrary, to dose-response studies in injured forests, also including unfavourable site conditions (Table 3). 

Bradley, D. P. International Union of Forest Research Organizations. Working Party, S3.04.01 Proceedings — Simulation Techniques in Forest Operational Planning and Control, Wageningen, The Netherlands (Agricultural University), 1978 137-45. 

International Union of Forest Research Organizations http //www. iufro.org... 

Provenance testing and seedling genecological experiments are extensive for Pinus contorta, due to its widespread distribution, economic importance and use as an exotic. An enormous provenance trial established in British Columbia in the 1970s by the British Columbia Ministry of Forests included 142 populations and 60 field test sites (Xie and Ying, 1995 Rehfeldt et al, 1999). A total of 158 seed lots were distributed around the world for International Union of Forest Research Organizations (lUFRO) provenance trials (summarized in K. Lindgren, 1993), but most of these trials contain only... 

Table 3 - International Union of Forestry Research Organizations, Subject Group Air Pollution Maximal concentrations of air pollutants for the protection of forests (in pg/m air). ...

Stanley A. Clarke Medal (1986). Honorary Member (1986), Executive Board Member (1977-1983), International Union of Forestry Research Organizations. President (1978-1982), Fellow (1970), International Academy of Wood Science. Honorary Advisor, Research Institute of Chemical Processing and Utilization of Forest Products, Chinese Academy of Forestry, Nanjing, P.R. China. 

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