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Báo cáo lâm nghiệp: " Soil and plant communities development and ecological effectiveness of reclamation on a sand mine cast" ppt

Báo cáo lâm nghiệp:

Báo cáo lâm nghiệp: " Soil and plant communities development and ecological effectiveness of reclamation on a sand mine cast" ppt

... M., KRZAKLEWSKI W., 2007. Soil organic matter, C and N accumulation during natural succession and reclamation in an opencast sand quarry (southern Poland). Archives of Agronomy and Soil Science, ... abundance of species (number of species) in plant communities depending on the age and category of areas in the Szczakowa sand mine castAge of areas (years)Areas left to succession Reclaimed areas5 ... Cracow, Cracow, PolandABSTRACT: e aim of the study was to assess terrestrial ecosystem development (mainly vegetation and soil charac-teristics) in the area of a sand mine cast (located in southern...
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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

... C was dug at each site. Soil taxonomy was described in excavated soil profi les applying the FAO WRB in-ternational classifi cation. Evaluation of underplanting damage e degree of damage ... basic cations in forest soil, T – cation exchange capacity – total amount of basic cations the soil is able to bind, V – basic saturation (saturation degree of the soil sorption complex by basic ... organomineral horizons was also evaluated. Both above-mentioned data sets were compared with the degree of damage to underplantings by means of correlation matrices.RESULTS AND DISCUSSIONPhysicochemical...
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Báo cáo lâm nghiệp: "Soil carbon dioxide efflux in pure and mixed stands of oak and beech" potx

... Temporal patterns of soil temperature (a) and soil water content (b) in the oak, mixed and beech stands (zones without moisturetreatment, n = 3) and comparison of soil water content variations ... incubations, we calculated that the equiva-lent of 70, 74 and 84% of the annual carbon input by litterfallwere released annually by heterotrophic respiration and that 8,9 and 8% were leached as ... in association with a linear mixedmodel containing the following variables: stand, moisture treatment,the interaction between stand and moisture treatment, and the tworandom effects ‘date’ and...
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Báo cáo lâm nghiệp: " Non-indigenous plant species and their ecological range in Central European pine (Pinus sylvestris L.) forests" ppt

... [11] mapped non-indig-enous plants like, for example, the East Asian Reynoutriajaponica and the North American Rudbeckia laciniata alongroads through a woodland area of the Orlické mountains ... which are characterised by rela-tively high mean indicator values for soil reaction (R) and nitro-gen availability (N). Additionally, all other non-indigenousvascular plant species (Conyza canadensis, ... Braun-Blanquet [6] and aimed at an ecological characterisation and/ or comprehensive inventories of natural and anthropogenic forest vegetation of a certain region. Fol-lowing the method of Braun-Blanquet...
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Báo cáo lâm nghiệp: " Soil and tree water relations in mature oak stands of northern Germany differing in the degree of decline" pdf

... values of a single tree were -0.87 and -0.94 MPa in a healthy and a damagedoak, respectively, at predawn, and -2.67 and -2.54 MPa in a healthy and a damagedoak, respectively, ... climatic (Hakel)reasons, respectively. All stands originated fromnatural regeneration. At each site, two adjacentstands were compared, each covering about 2ha. One of each ... w3 h1 4" alt ="" tive mean values of soil matric potentialwere only about -600 hPa in the healthystand and ca -700 hPa in the decliningstand in 40 and 100 cm soil depth...
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Báo cáo lâm nghiệp: "The root-plant ratio changes in the first growing periods of wild cherry (Prunus avium L.) plantations" pptx

... performance of new plantation in the forest. e study summarises data on the volume of major parts of 4 years old wild cherry trees. An allometric analysis of different parts of plants in relation ... Czech stand-ards to fix up the necessary quantitative and quali-tative parameters for seedlings and plants planted out. However, until the last Czech standard came out (J et al. 2002), ... were randomly extracted from all research plots on May 9, 2006. Samples were cleaned of soil and put into labelled plastic bags and they were taken into a laboratory for allometric measurements....
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Báo cáo lâm nghiệp: "Soil compaction caused by 450C Timber Jack wheeled skidder (Shefarood forest, northern Iran)" doc

... infiltration rate and aeration and these in turn increase runoff and water erosion in the harvested area. On the other hand, a decrease in soil aeration prevents root growth and decreases the vegetative ... the Caspian Sea in a narrow strip which has special ecological and topographical conditions and also has exclusive plant species diversity.In recent years the demand for wood has increased ... that harvesting and efficiency are increased, but at the same time maintaining the natural balance of forest by not en-dangering the soil, plant and animal life. On this basis, with the disappearance...
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Báo cáo lâm nghiệp: "Soil characteristics under selected broadleaved tree species in East Norwa" docx

... total nitrogen content, pH in water, exchangeable acidity, exchangeable cations and anions (Mg, Ca, Mn, Al, S, Fe, B, P and K), cation exchange capacity and base saturation. No regular patterns ... information of physical and chemical soil properties, their vertical charac-teristics and quantitative variations, are presented for 36 broadleaved stands in East Norway. MATERIALS AND METHODSe ... horizons were strongly acid with a great variability in nutrient contents, (ii) A horizons showed similar contents of silt and sand, low values of soil reaction and high values of C:N ratios,...
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Báo cáo lâm nghiệp: "Timber harvesting in the ukrainian carpathians: Ecological problems and methods to solve them" ppsx

... the soil surface of mountain cutting area, the main features (extent, average width, area and volume of opera-tional erosion) of skidding tracks used for the traffic of wheeled and crawler machinery ... undergrowth damage by categoriesTable 2. Average numbers of damaged undergrowth – Type and magnitude of damage, thousands per 1 ha (%)Crown damage Fracture of top Peeling of bark Fracture of trunk ... Carpathians are an important part of the ecological, economic and recreational environment for people in the centre of Europe, shared by many nations and countries. It is one of a few regions that...
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Báo cáo lâm nghiệp: "Soil-forming effect of Grand fir (Abies grandis [Dougl. ex D. Don] Lindl.)" pot

... individual horizons of particular stands. The content of plant available phosphorus increased especially in the oak and Grand fir stands, showing upward tendencies in all parts of the young stand. ... Restoration of Forest Environment at A orestation of Non-forest and Devastated Lands and No. 1G58031 Importance of Close-to-nature Silviculture for the Stability, Production and Non-production ... means of an iron frame 25 × 25 cm. e analyses were performed in the accredited Labora-tory Tomáš by standard analytical methods, yearly tested.Table 1. Accumulation of surface humus and amount...
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