Báo cáo lâm nghiệp: "Effects of sulfuric acid and nitrogen deposition on mineral nutrition of Picea abies (L ) Karst" ppt

... competition of bog pine and Norway spruce in the mixed stand; (iii) to propose a dynamic scheme (spatio- temporal reconstruction) based on historical data, synchroni- cal synusial observations of the ... vegetation and diachronic observations based on tree radial growth. 2. MATERIALS AND METHODS 2.1. Study site While most of raised bog of the Jura are situated in syncline a...

Ngày tải lên: 08/08/2014, 01:21

... procedure of hydrograph separation: basic (base flow) and direct runoff (sum of both interflow and overland flow). e direct flow Effects of drainage treatment and stand growth on changes in runoff components ... separation its recession limb and determining only the runoff con- stituents and their comparison also in the process of time. Similarly, the influence of land use c...

Ngày tải lên: 07/08/2014, 03:22

... increased consumption of food in the creation of a fat body in females of Lochmaea caprae (L. ) Differences of imagoes in the consumption of food in particular variants cannot be confronted with ... increased nutrition of nitrogen according to conclusions on stress impacts (K, K 2004b, 200 5). Changed nutrition or stress could af- fect the quality aspe...

Ngày tải lên: 07/08/2014, 10:21

... evaluate (i) humus reserves and forms, (ii) soil reaction, (iii) reserves of total carbon and nitrogen for the forest floor layers and (iv) carbon /nitrogen ratio. Soil analyses were carried out on samples ... tendency of Fig. 4. Distribution of pH KCl in layers of forest floor and orga- nomineral horizon in different forest stands Fig. 3. Distribution of pH H 2 O in l...

Ngày tải lên: 07/08/2014, 10:21

... substrates commonly used in the nursery: ( 1) a mixture of peat and vermiculite (p/v) 1:1 (v:v) and ( 2) a mixture of peat and composted pine bark (p/pb) 1:1 (v:v) (see Tab. I for substrate analyses). The ... (Tab. III). 3.3. Concentration of nutrients in needles When the concentration of nutrients in needles was ana- lysed, interaction between inoculation and type of...

Ngày tải lên: 08/08/2014, 00:22

... environment, Soil Use Manage. 14 (199 8) 1–5. [2] Anderson D.C., Ostler W.K., Revegetation of degraded lands at US Department of Energy and US Department of Defense Installa- tions: Strategies and ... determine whether the use of different techniques of site preparation influenced the development of different types of vegetation. On the one hand, the specific compositio...

Ngày tải lên: 08/08/2014, 00:22

... aspects varied among the two sides of the national border (Fig. 2). On the Polish side (TPN) Figure 1. Location of the study area in the Tatra Mts. Figure 2. Distribution of the stands ( %) in the mountain ... TANAP (Slovakia) and TPN (Poland) in regard to the exposure of mountain slopes. Figure 7. Mean volume of trees infested by bark beetles in TANAP (Slovakia) and TPN...

Ngày tải lên: 08/08/2014, 00:22

... position on the parent shoot of the most proximal offspring shoot, ( 2) diameter of the thickest offspring shoot, ( 3) length of the longest offspring shoot, ( 4) number of leaves of the largest offspring ... (black bars), 2 (grey bars) and 3 (white bars). Treat- ment 0 = control. See text for descriptions of treatments. Figure 5. Mean (+ s.e .) diameter (A), lengt...

Ngày tải lên: 08/08/2014, 00:22

... (0.9 7) 11.59 b (1.7 2) 30.68 a (17.2 2) Root biomass (RW; g)* 2.09 c (0.1 3) 4.83 b (0.6 1) 7.78 b (1.2 2) 20.67 a (10.9 6) Leaf biomass (LW; g)* 1.02 c (0.1 6) 1.30 bc (0.2 4) 2.07 b (0.3 3) 5.06 a ... ratio (LWR) 0.28 a (0.02 7) 0.20 b (0.01 8) 0.18 bc (0.02 0) 0.16 c (0.02 1) Leaf weight root ratio (LWRr) 0.49 a (0.07 3) 0.29 b...

Ngày tải lên: 08/08/2014, 00:22

... and treatment and unit for Fort Richardson) and to generate equations for height and diameter through time. Orthogonal and non- orthogonal contrasts were used to test for treatment and unit effects. These ... Informa- tion Criterion (AIC), Schwarz’ Bayesian Criterion (BIC), and comparisons of predicted values, residual values, and replication means. Results were similar amon...

Ngày tải lên: 08/08/2014, 01:21