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Báo cáo lâm nghiệp: " Impact of drought and leaf development stage on enzymatic antioxidant system of two Populus deltoides × nigra clones" potx

Báo cáo lâm nghiệp:

Báo cáo lâm nghiệp: " Impact of drought and leaf development stage on enzymatic antioxidant system of two Populus deltoides × nigra clones" potx

... leaves of both clones. For the two clones, use of inhibitors allowed identification of one Fe-SOD,one Mn-SOD and two Cu/Zn-SOD (Fig. 2A). In control condi-tions, main isoforms were Fe-SOD and ... limitedparticipation of this class of molecules during drought [10]. Theobjective of the present investigation was to focus on the res-ponse of some of the leaf enzymatic antioxidant system (SOD,catalase and ... decrease of protein content were observed for‘Luisa_Avanzo’ in response to the mild and severe drought, respectively. (Figs. 1D and J). Thus, reaction to drought was clone, leaf age- and drought...
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Báo cáo lâm nghiệp: "Sustainable cutting cycle and yields in a lowland mixed dipterocarp forest of Borneo" docx

... mid- and long-term proc-esses, especially as far as the behaviour of pioneers popula-tions are concerned. The 4-year post logging observationperiod of this study corresponded to an expanding stage ... Research in a LowlandMixed Dipterocarp Forest of East Kalimantan - The Contribution of STREK Project. CIRAD-Forêt, Montpellier, France and Minis-try of Forestry Research and Development Agency ... pro-portion in basal area of the dipterocarps and pioneers, depend-ing on the damage group and the cutting cycle period. Longerperiods and lower damage favour dipterocarps. The proportion of dipterocarps...
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Báo cáo lâm nghiệp: "Post-transplant root and shoot development in Abies nordmanniana Spach. seedlings after whorl bud and branch pruning" potx

... competition from herba-ceous vegetation for seedlings of jack pine, black spruce, and whitepine, New For. 21 (2001) 199–215.[20] Philipson J.J., Coutts M.P., Effects of growth hormone application on ... 6,27]. Removal of thewhorl and lateral buds and whorl branches had a more severeeffect on plant growth and caused a reduction in root length and DW. Removal of a significant part of the photosyntheticarea ... and greenery quality, Proceedings from the inter-national Christmas tree and greenery research and extension con-ference 31, July – 3. August, Denmark. Danish Centre for Forest,Landscape and...
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Báo cáo lâm nghiệp: "Litterfall, nutrient return, and leaf-litter decomposition in four plantations compared with a natural forest in subtropical China" ppt

... of N and P, and lowerreturn of Ca than coniferous ones. While the amount of poten-tial return of K and Mg show no clear trend between broadleafs and conifers. Initial lignin concentration and ... W.G., Haag D., Lieberei R.,Conversion of secondary forest into agroforestry and monocultureplantations in Amazonia: consequences for biomass, litter and soilcarbon stocks after 7 year, For. ... V and Fig. 3). 3.5. Nutrient dynamics of decomposing leaf litterVarying degree of increase of N concentrations was observedin leaf litter (Fig. 4). At the end of one year, N concentrationin...
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Báo cáo lâm nghiệp: "Impact of summer drought on forest biodiversity: what do we know" ppt

... ef-fects of drought on trees on forest biodiversity should berapidly evaluated, especially the impact of the plantation of drought- tolerant tree species and of the reduction of therotation length ... SHORT- AND MID-TERM EFFECTS OF DROUGHT Observed and potential short- and mid-term impacts of a drought event are listed in Table III. Short-term responsesmay differ from mid- and long-term responses ... survival and fecundity than non-diapausing ones [74, 113].Information on the effects of the 2003 drought on forest insectpopulations can be found in [86].To date, data on the short- and mid-term consequencesof...
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Báo cáo lâm nghiệp: "Temperate forest trees and stands under severe drought: a review of ecophysiological responses, adaptation processes and long-term consequences" ppt

... diagnosis of the causes of tree de-cline very difficult, and a retrospective view of tree history bythe way of dendrochronology is often helpful. If the impact of drought on stomatal control, carbon ... theuse of numerical simulation models basing on parameters de-rived from intensive measurements of seasonal patterns of soilwater content and of tree transpiration and leaf water poten-tials, and ... surface, of efficient conduction through mycelialstrands, of enhanced hydraulic conductivity at the soil-root in-terface or of hormonal and nutritional effects modifying stom-atal regulation of the...
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Báo cáo lâm nghiệp:

Báo cáo lâm nghiệp: "Forest yield index and its applicability to the assessment of future forest yields" docx

... informa-tion caused by a high level of uncertainty of natural, economic and social conditions during the long for-est production cycle. If the information about goals, solution variants and their consequences, ... quantification of wood-production function. is parameter is the main component of the classic Faustman model of periodical land revenue, and it is close to the com-mercial value of standing timber ... composition; forest managementSupported by the Ministry of Agriculture of the Slovak Republic, Project Reconstruction of Non-native Stands Endangered by Changing Conditions to More Stable Ecosystems.J....
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Báo cáo lâm nghiệp: "Divergence among species and populations of Mediterranean pines in biomass allocation of seedlings grown under two watering regimes" pps

... elongation, (3) for formation of axillary buds, (4) for elon-gation of axillary long shoots, (5) for formation of secondary axillarylong shoots, (6) for occurrence of dwarf shoots (either on ... 89Figure 1. Ontogenetic scores. (0) Cotyledonary stage, (1) emergence of the epicotyl rosette, (2) epicotyl elongation, (3) formation of axillarybuds, (4) elongation of axillary long shoots, ... components as a consequence of drought. 4. DISCUSSIONThe present paper is focused on the morphological response of seedlings from close related species (and populations withinspecies) to two contrasting...
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Báo cáo lâm nghiệp: "Differential photosynthetic and survival responses to soil drought in two evergreen Nothofagus species" docx

... that instantaneous and long-termwater use efficiency under well watered conditions did not giveany indication of the relative drought tolerance of a group of southern hemisphere conifers. Valladares ... regeneration of the Araucano-patagonicNothofagus species in relation to microclimatic conditions, Tuatara22 (1973) 233–244.[29] Yin Ch., Peng Y., Zang R., Zhu Y., Li Ch., Adaptative responses of Populus ... (the length of the guides of the TDR’ probes). Values of VWC (water vol/soil vol × 100) wereconverted to gravimetric water content by a calibration curve con-structed with a battery of soil samples...
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Báo cáo lâm nghiệp: "Stand structure, competition and growth of Scots pine (Pinus sylvestris L.) in a Mediterranean mountainous environment" pptx

... pro-duction. The conservation of a continuous cover and an irregu-lar structure by means of moderate wood extractions for shortperiods is advisable for protection of the ecosystem and foraesthetic ... each of these representative areas of each stand structure two rectangular plots of 40 m by 60 m were chosen at random. Inthe plantation, only one plot was chosen given the smaller area and the ... comparison of distance-dependentcompetition measures of height and basal area growth of individualconifer trees, For. Sci. 38 (1992) 695–720.[2] Biging G.S., Dobbertin M., Evaluation of competition...
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