Báo cáo lâm nghiệp: "arbon and nutrient stocks in mature Quercus robur L stands in NW Spai" docx

... frac- tion), N, P and K (in the stem wood) of the oak trees, as well Nutrient amounts in Quercus robur L. stands 563 Table VI. Average biomass, C and nutrient distribution in trees, litter and soil for the ... Sam- ples were taken using a metal ring (diameter 30 cm) and all plant ma- terial was removed from the ring. The oven-dried (65 ◦ C) samples of the plant materia...

Ngày tải lên: 07/08/2014, 16:20

... of early thinning on the growth of pine and spruce stands, Baltic. For. 4 (1998) 8–16. [18] Mäkinen H., Isomäki A., Thinning intensity and growth of Scots pine stands in Finland, For. Ecol. Manage. ... METHODS The stand level offers the first meaningful level of decision mak- ing, and the results obtained for the stand level management can be used as guidelines in forest level plan...

Ngày tải lên: 07/08/2014, 16:21

... be independent of thinnings. When a thinning is simulated, half of the basal area is removed equally from all diameter classes, and the other half as a low thinning, starting with the smallest ... since previous thinning (Y), remaining basal area after thinning (Gr) and years since last thinning to the first final cut (Yc), were independently increased and decreased by 10, 20 and 30 p...

Ngày tải lên: 08/08/2014, 01:21

... broad- leaves, including pedunculate oak, narrow- leafed ash (Fraxinus angustifolia Vahl), Euro- pean ash (Fraxinus excelsior L) , smooth-leaved elm (Ulmus minor Mill), white poplar ... poplar (Populus alba L) and, sporadically, stone pine (Pinus pin- ea L) . Pedunculate oak grows on the dominant plane. The second population is in the Cascine Park...

Ngày tải lên: 08/08/2014, 19:21

... suc- cessful growth and relatively low mortality of the experimental plantings of the silver fir established in a locality of clearing due to salvage felling. Even though the fir plantations ... cm in one-hour intervals have been recorded using a NOEL 2000 automated station lo- cated directly on the research plot. e station also records the rainfall in one-hour intervals and soil...

Ngày tải lên: 07/08/2014, 10:22

... spring and an absolute minimum in winter. As a whole, the pattern of rainfall can be defined as of the Alpine sublittoral type. The annual mean temperature, calculated for ... shoots, stools and standards, and to evaluate the possible relationships existing between these data and those characterizing the individual stems, the individual stoo...

Ngày tải lên: 08/08/2014, 18:21

... small-scale clearings Regeneration of large-scale clearings Inspection Bohemian - Moravian upland Lineární (Regeneration of small-scale clearings) Lineární (Regeneration of large-scale clearings) Lineární ... Upland) Linear (Regeneration of small-scale clearings) Linear (Regeneration of large-scale clearings) Linear (Inspection Bohemian-Moravian Upland) Fig. 3. Total mean height of planting...

Ngày tải lên: 07/08/2014, 03:22

... explo- ring global and local spatial autocorrelation, Bull. Ecol. Soc. Amer. 80 (1999) 231–234. [47] Szwagrzyk J., Small-scale spatial patterns of trees in a mixed Pinus sylvestris-Fagus sylvatica ... Bivariate point pattern analysis Bivariate analysis indicated a negative spatial association (repulsion) between Abies alba and Ostrya carpinifolia at all scales in plot 2, and between...

Ngày tải lên: 08/08/2014, 00:22

... dis- persed into pine plantations predominantly by blue jays (Garrulus glandarius L) and small ro- dents (Apodemus sylvaticus L and Clethriono- mys glareolus Schreber). The probability ... calculate specific leaf area (SLA, one-sided; in cm 2 g -1). Original article Growth and morphology of pedunculate oak (Quercus robur L) and beech (Fagus syl...

Ngày tải lên: 08/08/2014, 18:21

... culture on morphological development of western hemlock seedlings during field establishment: I. Flushing, shoot elongation and bud development. II. Survival, shoot length components and needle ... high nutrient availability, plant C/N balance decreases and plant growth will be enhanced until being carbon-limited; in such circumstances, carbohydrate reserves will be low, while nitro-...

Ngày tải lên: 07/08/2014, 16:20