خيارات البحث
النتائج 1 - 6 من 6
Utilisation de la teledetection pour l' etude des maladies et de l' etat hydrique des forets et cultures.
1984
Andrieu B.
The non-specificity of PAN [peroxyacetyl nitrate] symptoms on tomato foliage.
1983
Lewis T. | Brennan E.
Diagnosis of pollution effect on Slovak forest ecosystems
2002
Mankovska, B. (Forest Research Institute, Zvolen (Slovak Republic))
Presented paper based on long-term and systematic research of the negative effect of pollutants and of the content of the elements in particular parts of forest environment (the years 1965/2002) proves of the importance, need and justificatin of the research on given subject. Knowing the elemental composition of pollutants as to its quality and quantity is basic precondition with diagnosing the effect of polluted air on forest environment. For the needs of practice three main pollution deposition types (acid, alkaline and ammonia) and 8 subtypes were established. They represent changes of forest ecosystems caused by different substances from pollutants
اظهر المزيد [+] اقل [-]Dying forest and air pollution: what we have learnt (DEFORPA program 1984-1991)
1991
Landmann, G. (Ministere de l'Agriculture, Paris (France). Departement de la Sante des Foret)
Nutritional disturbances and histological changes in declining forests
1989
Zoettl, H.W. (Albert-Ludwigs-University, Freiburg im Breisgau (Germany). Inst. of Soil Science and Forest Nutrition) | Huettl, R.F. | Fink, S. | Tomlinson, G.H. | Wisniewski, J.
Detection of damages of trees with time-resolved luminescence
1991
Schneckenburger, H. (Fachhochschule Aalen (Germany)) | Schmidt, W.
