Báo cáo lâm nghiệp: "Effects of microsite variation on growth and adaptive traits in a beech provenance trial." pps

... intensity of Melampsora larici-populina occurrence and the value of growth traits and biomass yield in Populus nigra  e correlation between the growth traits of stem diameter and plant height and ... some clones (clones 7 and 107) no yield decline was observed at all or it ranged only from 6% to 9% (clones 49 and 152). It is to note that clone 107...

Ngày tải lên: 07/08/2014, 10:21

... environmental indicators.  e aim of this study was to clarify to what extent the spatial variation of environment a ects growth and adaptive traits in a provenance trial, and whether blocking can ... genetic variation within populations and/ or environmental variation on very small scales. Analysis of covariance confi rmed the expected signifi cant provena...

Ngày tải lên: 07/08/2014, 10:21

... pure and mixed stands. Growth of oaks in mixed stands with beech 461 The effects of stand density (Rdi o ak + beech) , species com- position (mix b eech), stand age of oak (age o ak), and site index of ... the stand basal area increment as a function of dominant height, height increment of the dominant trees, and stand density...

Ngày tải lên: 07/08/2014, 16:20

... insect populations in the context of this exceptional event. Observations of changes in population levels of the main European forest insect pests during and after the drought are presented and ... prolonged drought on bark beetles The success of the establishment of bark beetle populations on their host tree depends, on the level of the...

Ngày tải lên: 07/08/2014, 16:20

... each combination of plot and month. Annual leaf biomass was calculated by summing monthly leaffall. To quantify the phenological pattern of leaffall and the corre- sponding phenological structure of the ... 2006) Abstract – We monitored leaf biomass, seasonal changes in leaffall, and plot growth for 11 years post-thinning in a secondary deciduous har...

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

... years for density including ear- lywood and latewood density [22]. Early selection for radiata pine (Pinus radiata) has been examined in growth and wood density. Cotterill and Dean [6] observed early ... as for wood density, the age-age genetic Early selection for wood quality traits in radiata pine 3 (2) age trend of heritability of these traits; (3...

Ngày tải lên: 07/08/2014, 16:20

... 52]. Classification of thinning methods varies due to different criteria, including the type of thinning, intensity (grade), re- turn interval, and the timing of the first thinning [48]. Two major types of thinning ... again during the last thinning. In the T2, 258 crop trees were chosen in the first thinning, and only 62% of these trees were chosen again during the las...

Ngày tải lên: 07/08/2014, 16:20

... (Pseudotsuga menziesii F.) o n the chemical composition of soil solutions and on the leaching of DOC and ions in drainage waters Jacques R * ,SylvainL , Dominique G, Benoợt P, Pascal B INRA Centre ... 70-year-old Douglas-fir plantation on the chemical composition of soil solutions and on leaching of nutrients in drainage wat...

Ngày tải lên: 07/08/2014, 16:20

... dependent on the initial vegetation type and on soil seed bank composi- tion. We therefore encourage additional experiments in differ- ent stand and soil types in order to establish the generality of these ... on the considered soil parameters. Both disc and rotary ploughing induced an overall lowering of soil nutrient index and soil compaction, but diffe...

Ngày tải lên: 07/08/2014, 16:20

... 355 c  INRA, EDP Sciences, 2007 DOI: 10.1051/forest:2007012 Original article Effect of single Quercus ilex trees upon spatial and seasonal changes in soil water content in dehesas of central western ... spring rainfall decreased soil water content quickly until June or July. Soil water content remained nearly constant during the rest of the...

Ngày tải lên: 07/08/2014, 16:21

... Available online at: c  INRA, EDP Sciences, 2007 www.afs-journal.org DOI: 10.1051/forest:2007021 Original article Effects of resource availability on condensed tannins and nitrogen in two Quercus species ... radiation), at two water regimes (500 and 800 mm) and with two nutrient availabilities (standard substrate and 7% increase in soil N). The concentratio...

Ngày tải lên: 07/08/2014, 16:21

... results of the spatial analysis of late- successional species regeneration in three plots of artificial Pinus nigra stands in the northern Apennines. For each species forming NR we describe both point ... 669679 â INRA, EDP Sciences, 2005 DOI: 10.1051/forest:2005059 Original article Spatial dynamics of late successional species under Pinus nigra...

Ngày tải lên: 08/08/2014, 00:22

... efficiency and CO 2 compensation point associated with midday stomatal closure and mid- day depression of net CO 2 exchange of leaves of Quercus suber. Planta 1 62, 193 -20 3 Tenhunen ... patterns in forest stands of lobolly pine (Pinus taeda L). In: Abstract collection of the international workshop on Ecophysiology and Genetics of...

Ngày tải lên: 08/08/2014, 18:21

... The role of glutamine synthetase, glutamate synthase and glutamate dehydrogenase in ammonia assimilation by the mycorrhizal fungus Pisolithus tinctorius J.L. Kershaw G.R. ... inhi- bition by MSX. The increase in the glutamate pool appeared to indicate assi- milation of ammonia into glutamate by GDH activity. Inhibition of gl...

Ngày tải lên: 09/08/2014, 04:20