Báo cáo lâm nghiệp: " Effects of site preparation with micro-basins on Pinus halepensis Mill afforestations in a semiarid ombroclimate" potx

... of site preparation with micro-basins on Pinus halepensis Mill. afforestations in a semiarid ombroclimate Alberto SAQUETE FERRÁNDIZ a *, Mar a José LLEDÓ SOLBES a , Antonio ESCARRÉ ESTEVE a , ... pre- ferring a particular orientation and which only appear in that specific orientation, whereas some species appearing in one Figure 6. Annual mean ring growth...

Ngày tải lên: 08/08/2014, 00:22

... effect on seed germination (Trabaud and Casal, 1989; Neéman et al, 1993; González-Rabanal and Casal, 1995), whereas charred wood can facilitate germination, probably via nitrates (Keeley, ... tempera- tures on germination of Pinus halepensis Mill. and P pinaster Aiton ssp. pinasler seeds in southeast Spain. Vegetatio 116, 69-72 Naveh Z (1974) Eff...

Ngày tải lên: 08/08/2014, 18:21

... net photosynthesis was always greater on long and sunny summer days with high daily integrals of water vapor saturation deficit. On moist and overcast days or short days in autumn, however, ... MacGregor M.E. & Talbot A. J.B. (1978) The characteristics of sea- sonal and ontogenetic changes in the tissue-water relations of Acer, Populus,...

Ngày tải lên: 09/08/2014, 04:20

... Hydrotechnical meliorations. Drainage channels. Praha, ČSNI 1993. (in Czech) Drainage (1973): Principles and applications. Part II – eo- ries of drainage and watershed runoff. Wageningen, Interna- tional ... periodical variability of the runoff generation. Black area is a permanent stream runoff source. Horizontally-hatched areas generate runoff seasonally in late winter, spring and...

Ngày tải lên: 07/08/2014, 03:22

... 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 findings ... 60%, insolation 0%) (with a 4-hour gradual transition between them) for the period of monitoring (6 days). Using a Leave Area Meter (AM 300), the area of leaves wi...

Ngày tải lên: 07/08/2014, 10:21

... growing season, in autumn, after the leaf fall (Fagus sylvatica) in 2004–2006. Particular samples were taken by a standard method using a metal frame of a known area (0.1 m 2 ). In each of ... range, which can be another factor indicat- ing man-conditioned acidification of the soil profile. According to the classification of buffer zones, the spruce monoculture occurs pre...

Ngày tải lên: 07/08/2014, 10:21

... obtain mycorrhizal P. pinea seedlings produced in container. The high quantity of spores that can be obtained from one basidioma and the ease of application of this type of inoculum makes of ... with a solution of 20-7- 19 Peters Professional Conifer Grower (Scott, Tarragona, Spain) Tabl e I. Analytical characteristics of substrates used to grow Pinus pinea seedlings in...

Ngày tải lên: 08/08/2014, 00:22

... first stages of the outbreak in NP Šumava [22], to a larger extent than in the Tatra mountains. The area of clearcuts after salvage cuttings was considerably larger than the area of dead trees in ... / montagnes 1. INTRODUCTION The Tatra Mountains are the highest mountain range in the Carpathian arch. They are located along the border between Slovakia (75% of mountain land a...

Ngày tải lên: 08/08/2014, 00:22

... like in many other tree species, the branching system consisting of a parent shoot extended in one year and a cohort of offspring shoots extended a year later is characterized by a gradient of increasing ... the effects of bud and leaf removal on the extent of organ differentiation in nearby undamaged buds were assessed. The four most distal axillary buds and leave...

Ngày tải lên: 08/08/2014, 00:22

... analyzed separately for each light level using one-way analysis of variance. Similarly, differences in RCD and HT among light levels were ana- lyzed separately for each measuring date using one-way ... and thus more biomass was pro- duced by the same amount of leaf area. The rapid rise in LAR with decreasing light intensity (Tab. I) together with the ability to maintain a positi...

Ngày tải lên: 08/08/2014, 00:22