Báo cáo lâm nghiệp: "rowth and health state of silver fir (Abies alba Mill ) in the ridge area of the Jizerské hory Mts" docx

... 0002070201. Growth and health state of silver fir (Abies alba Mill. ) in the ridge area of the Jizerské hory Mts. V. B, D. K Forestry and Game Management Research Institute, Strnady, ... K). CONCLUSIONS Based on the results of the investigations into the development of the silver fir plantations and the dy- namics, of some c...

Ngày tải lên: 07/08/2014, 10:22

... seedlings growing in the open area, higher values in the gap and the highest values in seedlings growing under shelterwood, ex- plained these diff erences by increased photoinhibi- tion in beeches ... lower after 30 days than in the leaves of plants left in the shade and in control seedlings growing in the gap. Photoinhibition in beech seedlings grown...

Ngày tải lên: 07/08/2014, 10:21

... During the period 2006–2007, in the Czech part of the Bohemian Forest, samples of silver fir were taken mainly in the upper alti- tudinal limit of silver fir occurrence. In the present paper the ... SCIENCE, 56, 2010 ( 9): 381–388 Nutrition of silver fir (Abies alba Mill) growing at the upper limit of its occurrence in the Šumava National...

Ngày tải lên: 07/08/2014, 10:21

... of the classes of ring shake of the stools performed on the basis of the degree of dominance of the latter (table XIII), it may be noted how the dominant and codominant ... (198 9), Boetto (199 1) and Macchioni (1992a). Both in the standards (older) and in the shoots (younger), only the portion closest to the pith (&l...

Ngày tải lên: 08/08/2014, 18:21

... factor of Rubisco. 1. INTRODUCTION Decline of silver fir (Abies alba Mill. ) stands is an im- portant problem inCentral European forests ,and particu- larly in the Sudete mountains of southern Poland. ... dependence of the specificity factor of rubisco (τ ) and of the affinity for CO 2 and O 2 (K c and K o and R d ) are modelled with the f...

Ngày tải lên: 08/08/2014, 14:20

... contribution of these results to the understanding of the ecology of sil- ver fir? Water relations of fir are very close to that of pines despite marked differences in resistance ... apparently origi- nates in the roots. J Exp Bot 38, 1174-1181 Original article Water relations of European silver fir (Abies alba Mill) in 2 natura...

Ngày tải lên: 08/08/2014, 19:21

... damaged individuals). Of that the proportional share of the other deciduous tree species (33.1% of individuals) and larch (19.7% of individuals) is the highest whilst fraying of the basic tree ... preserve during the second measurement in order to compare damage in this territory (higher load and game presence) with the rest of the territory. e determi...

Ngày tải lên: 07/08/2014, 03:22

... horizons) in the spruce stand on the former arable soil and then in the Douglas fir one, lower in the pine stand and especially lower in the older stand on forest land. In the mineral soil, the ... registered in the Douglas fir stand again, visibly lower in the pine and spruce stands on the agricultural lands and the lowest on the old forest soil...

Ngày tải lên: 07/08/2014, 03:22

... dynamics of beech, mixed (fi r beech and spruce beech stands) and spruce stands, relict pine woods and stands in the ecotone of the upper forest limit in diff erent site, stand, air-pollution and ... 485–504. M T. (200 6): Modelling the structure and development of forest stands using the growth simulator SIBYLA. In: V S. (ed .): Increasing the Rati...

Ngày tải lên: 07/08/2014, 10:21

... character of the two study sites.  e spruce stand in Rájec is embe- ded into agricultural landscape with three villages within the distance of 1.5 km from the stand and two local minor roads within ... collector installed in the nearby open area. Samples were taken once a month in the winter season and in 14-day inter- vals in other seasons.  e samples were...

Ngày tải lên: 07/08/2014, 10:21