细化搜索
结果 1-6 的 6
Environmental pollution and impacts on soils and forests nutrition in North America
1990
Johnson, D.W. (Biological Sciences Center, Reno, NV (USA). Desert Research Inst.) | Ball, J.T.
Sulphur gas emissions in the boreal forest: the west whitecourt case study. 8: pine tree mineral nutrition
1990
Amundson, R.G. (Cornell Univ., Ithaca, NY (USA). Boyce Thompson Inst. for Plant Research) | Walker, R.B. | Schellhase, H.U. | Legge, A.H.
Effect of the chemical composition of industrial dusts on forest floor organic matter accumulation
1990
Grodzinski, W. (Jagiellonian Univ., Krakow (Poland). Inst. of Environmental Biology, Dept. of Ecosystem Studies) | Greszta, J. | Laskowski, R. | Maryanski, M. | Rozen, A.
Fertilizer application in aid of plantation establishment in the savanna areas of Nigeria
1990
Kadeba, O. (Federal Univ. of Technology, Akure (Nigeria). Dept. of Forestry and Wood Technology)
Nutritional disturbances and declining Armand Pine in southwestern China
1990
Guangjing, M. (Chinese Academy of Forestry, Beijing (China). Research Inst. of Forestry)
Survival rate of tree and shrub seedlings under extreme environmental nitrogen pollution
1990
Kowalkowski, A. (Pedagogical Univ., Kielce (Poland). Inst. of Geography)