Báo cáo lâm nghiệp: " Partitioning of remobilised N in young beech (Fagus sylvatica L ) is not affected by elevated [CO2]" ppsx

... ana- lysing the remobilization of stored N. The labelled N represents only a part of the total remobilised N during the CO 2 -experiment since N taken up during earlier seasons will also be remobilised. ... INTRODUCTION Tree internal N cycling allows uncoupling of growth from N uptake; especially in spring, growth of deciduous trees relies to a great extent on the remo...

Ngày tải lên: 08/08/2014, 00:21

... preci- sion of classification of kriging points to indi- vidual zones. 3. RESULTS Allelic frequencies in the investigated populations are given in table II. The allelic frequencies ... Illing- worth K., Trust D.C., Pryhitka B.A., Popula- tion differentiation in lodgepole pine, Pinus contorta ssp. latifolia: a discriminant analysis of allozyme varia...

Ngày tải lên: 09/08/2014, 04:20

... assi- milated nitrogen. Early products of NH4 assimilation (e.g., asparagine, glutamine, etc .) remaining in the root cells may sub- sequently undergo: 1) incorporation into other amino ... graniforme. Plant PhysioL 76, 395-399 Hill-Cottingham D.G. & Lloyd-Jones C.P. (197 7) translocation of nitrogenous compounds in plants. In: fVitrogen A...

Ngày tải lên: 09/08/2014, 04:20

... scale change. For the soils and the humus, errors linked to sampling and analyses remained relatively small. The main source of uncer- tainty lay in the use of the model estimating bulk density ... a local scale (forest stand), and then to extrapolate the data using statistical analyses and pre-existing soil and stand maps. * Corresponding author: nys@nancy.inra.fr Article published by...

Ngày tải lên: 08/08/2014, 00:22

... image by identifying tie points. ose were defined not only on the unconnected images, but also on the nearest two images around those unconnected ones. After defining all the points the calculation ... synchronize signalization with the aerial scanning of the area. In the analogue scanning of images control points visible at the aerial images were scanned at first and then the...

Ngày tải lên: 07/08/2014, 03:22

... Podzol, but for the Mollic and Umbric Gleysol an azonal forest type dominated at the given elevation in this growth district by common alder (Alnus glutinosa [L. ] Gaertn .) is more plausible, ... substrate induced Podzol (Plot 10, Plot 1 4) com- mon beech is predominant with an amount of more than 50%, followed by Norway spruce, alder species (Alnus spp .) and...

Ngày tải lên: 07/08/2014, 03:22

... and function of pine forest in central Himalaya. II. Nutrient dynamics. Annals of Botany, 60: 53–67. GEORGE M., VARGHESE G., 1992. Nutrient cycling in Tectona grandis plantation. Journal of Tropical ... and function of Shisham forests in central Himalaya, India: Nutrient dynamics. Annals of Botany, 89: 55–65. LUGO A.E., 1992. Comparison of tropical tree plantations wit...

Ngày tải lên: 07/08/2014, 03:22

... and principles in combination with design principles of rural roads and in accordance with function- ally integrated management could be applied in the landscape management of this area and also ... the general application of acquired findings in the Lednice-Valtice Cultural Landscape and in the other areas, mainly with a similar potential of utilization and sustainable dev...

Ngày tải lên: 07/08/2014, 04:20

... deltoides including well-performing clones from the open pollination of those parental species. Clones from this group were labelled as CZ clones.  e sec- ond group of nine clones included ... the necessity of demanding establishment. A successful poplar culture depends on planting of proven clones, good site and intensive cultural treatments. All clones, usually hybrid poplars...

Ngày tải lên: 07/08/2014, 10:21

... the considerable amount of absorbed PAR is not directly involved in solar energy transformation into the formation of new biomass. The increased amount of foliage is not involved in effective ... Modelling the interception of solar energy in intensively managed stands. New Zealand Journal of Forest Science, 17: 193–209. H C.A., R D .L. (198 3): I...

Ngày tải lên: 07/08/2014, 10:21