Báo cáo lâm nghiệp: " Natural hybridization between cultivated poplars and their wild relatives: evidence and consequences for native poplar populations" pdf

... according to the equation below, according to B (1993). 4(DGD – DGD min )(DGD max – DGD) t = – – – – – – – – – – – – – – – – (DGD max – DGD min ) where: t – growth inhibiting index, ... H max – 130 b 2 = 2 ( – – – – – ) D max H max – 130 b 3 = ( – – – – – ) D 2 max Light availabi...

Ngày tải lên: 07/08/2014, 03:22

... 2008). e aim of our paper is to compare the effects of different variants of regeneration felling on the successfulness and growth response of sessile oak regeneration at nutrient-rich sites of medium-alti- tude ... openness degree of light intensity transect 364 J. FOR. SCI., 57, 2011 (8): 359–368 e development of diameter and height growth of oak regeneration...

Ngày tải lên: 07/08/2014, 10:21

... 0002070201. In uence of a planting hole application of dolomitic limestone powder and basalt grit on the growth of Carpathian birch (Betula carpatica W. et K.) and soil chemistry in the air-polluted Jizerské ... this variant. On the other hand, in the basalt and control treatments, the foliar Ca concentrations have...

Ngày tải lên: 07/08/2014, 10:22

... main forest ecosystems pools from Spain and Latin America, this study compares C pools of three forest ecosystems: a tropical deciduous forest in Mexico, a tropical wet forest in Cuba and a temperate ... 0–10 cm and 10–20 cm, and their C concentrations were determined in automated C analyzer (CM 5012, UIC, Inc). Soil C contents were calculated taking in ac-...

Ngày tải lên: 07/08/2014, 16:20

... organic mat- ter biodegradability and consequently on mineral element and major nutriments release and availability. The results showed that carbon mineralization and nitrogen mineralization can ... water-holding capacity). Carbon-mineralization was monitored; mineral nitrogen, water-extractable organic carbon and mineral elements were determined before and after th...

Ngày tải lên: 07/08/2014, 16:20

... between males of P. ì canadensis and P. ni gra in fertilizing P. nigra females in the artificial species-mixed Belgian poplar stand. A paternity analysis also revealed non-random intra-specific mating ... situated in an agricultural landscape in which there are many poplar plantations of P. ì canadensis but no stands of P. nigra (except plantations of P. nigra cv....

Ngày tải lên: 07/08/2014, 16:20

... 10.1051/forest:2006069 Original article Tree nutrition of Norway spruce as modified by liming and experimental acidification at the Höglwald site, Germany, from 1982 to 2004 Christian H * , Wendelin W ,AxelG ă Fachgebiet ... effects of forest liming are the deacidification of soil and seepage water, and the increase in Ca and Mg sup- ply of...

Ngày tải lên: 07/08/2014, 16:20

... online at: c  INRA, EDP Sciences, 2007 www.afs-journal.org DOI: 10.1051/forest:2007024 Original article The effects of thinning treatments on density, MOE, MOR and maximum crushing strength of ... low. In addition, the seed source of samples taken from two plantations areas was Thinning effects on Pinus brutia wood properties 475 [33] Larson P.R., Wood fo...

Ngày tải lên: 07/08/2014, 16:21

... 10.1051/forest:2007046 Original article Effect of an oil heat treatment on the leachability and biological resistance of boric acid impregnated wood* Florent Lyon a ** , Marie-France T hevenon b , Won-Joung Hwa n g c ,YujiImamura c ,JosephGril a , Antonio Pizzi d a Laboratory ... application of an oil layer of about 1.5 mm thick on tangential and radia...

Ngày tải lên: 07/08/2014, 16:21

... cultivated poplars and their wild relatives: evidence and consequences for native poplar populations An VANDEN BROECK a *, Marc VILLAR b , Erik VAN BOCKSTAELE c , Jos VAN SLYCKEN a a Institute for Forestry ... natural genetic barriers and its frequency depends on the local population size and the abundance of the cultivated poplars. In summary, the risk of...

Ngày tải lên: 08/08/2014, 00:22

... (pairs 1, 4, 7 and 8), 2 with only centromeric bands (pairs 11 and 12) and 3 pairs (2, 5 and 10) having both intercalary and centro- meric bands (Figs. 1 (2a) and 2B). In karyotype of P. heldreichii ... with centromeric and intercalar bands on short arm (pairs 2, 7, and 8), chromosome pairs with centromeric and intercalar bands on long arm (pairs 5, 9 and 12) and chro...

Ngày tải lên: 08/08/2014, 00:22

... with Average Ring Density, Minimum Density, Earlywood Density and Latewood Percentage. tree breeding / genetic correlations / wood quality / wood density components / Pinus pinaster Résumé – Corrélations ... For. Sci. 60 (2003) 285294 â INRA, EDP Sciences, 2003 DOI: 10.1051/forest:2003020 Original article Genetic correlations between wood density components in P...

Ngày tải lên: 08/08/2014, 01:21

... sub-tropical, with a mean annual rainfall and temperature of 1144 mm and 22 °C respectively. The trial was located at an elevation of 45 m on an east facing slope. Soil parent material is of aeolian ... important indicator of pulpwood quality. 3.7. The use of Canonical Variate Analysis to compare the properties between groups of variates Canonical Variate Analysis...

Ngày tải lên: 08/08/2014, 01:21

... better theoretical understanding of the relation between measurable parameters of the heat field and sap flow and for methodical aspects of sap flow techniques. 2. MATERIALS AND METHODS 2.1. Site and sample ... the stems by the linear heater was measured by thermocouples, installed in axial and tangential directions around the heater in different xyle...

Ngày tải lên: 08/08/2014, 01:22

... alt="" Ionic interactions between precipitation and leaf cuticles T. Scherbatskoy University of Vermont, Botany Department, Burlington, VT 05405, U.S.A. Introduction The leaf cuticle ... interactions between leaf surfaces and precipitation, particularly the role of the leaf cuticle in mediating ion transport into and out of the leaves. Mater...

Ngày tải lên: 09/08/2014, 04:20