[Studies on forest ecosystems using permanent observation plots in Rhineland-Palatinate. Proceedings of a colloquium, held on 4th June 1996 at Trippstadt]

agentes nocivos air pollution biochemistry biochimie biologie du sol carga contaminante charge polluante chaulage crecimiento croissance ecosistema ecosystems encalado encuestas forestales enfermedades de las plantas facteur nuisible fagus sylvatica fertilisation fertilizer application forest ecology forest surveys growth injurious factors insecte nuisible liming maladie des plantes pest insects picea abies plant diseases pollutant load quercus racine renania-palatinado rhineland-palatinate roots soil biology viabilidad viability