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 cast Age of areas (years)...

Ngày tải lên: 07/08/2014, 10:22

... 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 comp...

Ngày tải lên: 07/08/2014, 10:21

... Temporal patterns of soil temperature (a) and soil water content (b) in the oak, mixed and beech stands (zones without moisture treatment, 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 litterfall were released annually by heterotrophic respiration and that 8, 9...

Ngày tải lên: 07/08/2014, 16:20

... [11] mapped non-indig- enous plants like, for example, the East Asian Reynoutria japonica and the North American Rudbeckia laciniata along roads 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-indigenous vascular plant species (...

Ngày tải lên: 08/08/2014, 00:22

... values of a single tree were -0.87 and -0.94 MPa in a healthy and a damaged oak, respectively, at predawn, and -2.67 and -2.54 MPa in a healthy and a damaged oak, respectively, ... climatic (Hakel) reasons, respectively. All stands originated from natural regeneration. At each site, two adjacent stands were compared, each covering ab...

Ngày tải lên: 08/08/2014, 18:21

... 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...

Ngày tải lên: 07/08/2014, 03:22

... 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 dem...

Ngày tải lên: 07/08/2014, 03:22

... 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. MATERIAL...

Ngày tải lên: 07/08/2014, 03:22

... 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 categories Table 2. Average numbers of damaged undergrowth – Type and magnitude of damage, thousands per 1 ha (%) Crown damage Fracture of top Peel...

Ngày tải lên: 07/08/2014, 03:22

... 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, Produ...

Ngày tải lên: 07/08/2014, 10:22