Báo cáo lâm nghiệp: "The above- and belowground carbon pools of two mixed deciduous forest stands located in East-Flanders (Belgium)" pot
Báo cáo lâm nghiệp: "The above- and belowground carbon pools of two mixed deciduous forest stands located in East-Flanders (Belgium)" pot
... pp. 177–222.516 I. Vande Walle et al.Original articleThe above- and belowground carbon pools of two mixed deciduous forest stands located in East-Flanders (Belgium)Inge Vande Wallea,*, Sylvie ... I). The main tree species, being oak and beech Carbon pools in two deciduous forest stands 513Table IV. Contribution of the main tree species in the total carbon storage (ton C ha–1) in the aboveground ... amount of carbon stored (resp. 324.8 tons C ha–1 and 321.6 tonsCha–1) and the distribution between living and non- Carbon pools in two deciduous forest stands 515Figure 2. Carbon in the...
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Báo cáo lâm nghiệp: "The persistence and function of living roots on lodgepole pine snags and stumps grafted to living trees." pdf
... far side of the stump two years after manualthinning (P = 0.140, Fig. 2).Tree ring index (TRI) of the leave trees in the manual thin-ning study significantly increased following removal of thesurrounding ... snags and stumps in the natural mortality and manual thinning studies. Living roots on thestumps or snags were placed into two categories; those located < 90◦from the point of attachment of ... attachment of the grafted root and those > 90◦fromthe point of attachment.Figure 3. Tree ring index during 2001–2002 (before thinning) and 2003–2004 (after thinning) in live trees that had their...
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Báo cáo lâm nghiệp: "Growth, allocation and leaf gas exchanges of hybrid poplar plants in their establishment phase on previously forested sites: effect of different vegetation" docx
... application of the treatments,no difference in inter-row weed biomass was found betweenthe mowed plots (M) and the control (V) (Tab. I). The applica-tion of herbicides in the beginning of the growing ... treatments practiced in this study differed in their success in terms of controllingthe weeds. Two months after the application of the treat-ments, the presence of competing vegetation in the mechanicalmowed ... among stands. 2.2. Experimental designSix hybrid poplar stands (block units in our experimental research)growing on former clearcut strips were selected. Three of the stands were planted in 2003,...
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Báo cáo lâm nghiệp: "The influence of irradiation on the behaviour and reproduction success of eight toothed bark beetle Ips typographus (Coleoptera: Scolytidae)" doc
... (co-balt 60). Because of possible problems concerning the rearing of irradiated individuals, the rearing was done in large numbers of individuals and each dose was carried out in five replications. ... shortly prior to the beginning of rearing.Number and sex ratio of the F1 offspring were not identified in this study, because of the low number of emerged beetles in all treatments. ere were ... J., ZÚBRIK M., 2003. Sterile Insect Technique as a Tool for Increasing the Efficacy of Gypsy Moth Biocontrol. In: Proceedings Ecology, Survey and Management of Forest Insects. General Technical...
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Báo cáo lâm nghiệp: " Humus conditions and stand characteristics of artificially established young stands in the process of the transformation of spruce monocultures" pdf
... controlling soil carbon and nitrogen stores in pure stands of Norway spruce (Picea abies) and mixed species stands in Austria. Forest Ecology and Management, 159: 3–14.BINKLEY D., GIARDINA C., ... Distribution of pHH2O in layers of forest floor and organomineral horizon in different experimental stands Fig. 3. Distribution of pHKCl in layers of forest floor and organomineral horizon in different ... 215–223 of a forest ecosystem from the point of view of the element cycle preservation in forest ecosystems and maintaining their ecological stability. e condition and form of humus in forest...
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Báo cáo lâm nghiệp: "The evolution of natural floodplain forests in South Moravia between 1973 and 2005" pptx
... relevés. The increasing trend in the number of recorded species may, however, also mean the movement of some of the ecologi-cal factors. In the case of floodplain forests, one of the most ... cam-pestre. e loosening of the canopy due to dying and fall of some of the large oaks is a condition crucial for the development of level 3. e increasing EIV for the light and moisture of the herb ... subjectively located in order to cover the site variability of the forest reserves. A total of 15 PRP were located in Ranšpurk and 9 in Cahnov-Soutok. eir position was fixed by draw-ing in the...
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Báo cáo lâm nghiệp: "Soil environment and nutrient status of Norway spruce (Picea abies [L.] Karst.) underplantings in conditions of the 8th FAZ in the Hrubý Jeseník Mts" potx
... 149derplantings increases with a decreasing content of these nutrients in needles. An opposite correlation was determined for aluminium: with an increasing proportion of this element in nutrition ... limit of the lower optimum of 130 mg·kg–1. In the subsequent organomineral horizon (Ae/Ep) the values of Ca indicate the lower optimum reserves in the range of 80–160 mg·kg–1, and in 15% of ... high amount of toxic aluminium in nee-dles of adult trees growing on plots with symptoms of the acute stand decline was also reported by D et al. (2007). e hypothesis of insuf-fi cient...
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Báo cáo lâm nghiệp: "The effects of flooding and Phytophthora alni infection on black alder" pps
... DISCUSSIONConfirmation of flooding and P. alni infection effects on black aldere analysis of covariance confirmed that the both factors (flooding and P. alni infection) and their combination significantly in uenced ... and actinorrhiza biomass and foliar length and biomass. Infection had the most prominent effect on actinorrhiza biomass (F = 32.76, P < 0.001).e interaction of both factors (flooding and ... to flooding (MV 1956; K 1997).e infected treatment showed symptoms charac-teristic of bleeding cankers and black alder decline, including the presence of small, yellowing and sparse...
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Báo cáo lâm nghiệp: "The survey of some factors affecting bark lesion development caused by Phytophthora cactorum on common beech and other broadleaved trees" pdf
... C.M., J T. (2003): Progress in understanding Phytophthora diseases of trees in Europe. In: MC A.J., H G.E.S.J., T I. (eds): Phytophthora in Forests and Natural Ecosystems. Perth, ... Research Institute for Landscape and Ornamental Gardening, Průhonice, Czech RepublicABSTRACT: e three experiments relating to the pathogenicity of Phytophthora cactorum to beech and other forest ... contain-ers filled with sterile peat substrate (pH 5). en the saplings were cultivated in hotbed until they came into leaf. During the course of own experi-ments the saplings were cultivated in...
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Báo cáo lâm nghiệp: " The effects of cutting regimes on natural regeneration in submountain beech forests: species diversity and abundance" pdf
... in uence of cutting intensity on the abundance of both one-year-old and older seedlings. e abundance of beech seedlings was initially increasing with increasing cutting intensity, and, having ... cutting was primarily focused on the admixed species, dying and damaged trees and trees of very low quality. e main characteristics of research plots, cutting intensity and response of stand ... stand den-sity markedly promote the formation of increments (P 2005) and fecundity in the remaining trees (P et al. 2000), and they also promote the emergence and growth of seedlings...
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