Báo cáo lâm nghiệp: "Effect of ozone article and sulphur dioxide on of Pinus halepensis Miller" pps

... growth of Jeffrey pine and giant sequoia in response to ozone and acid mist. Environ Exp Bot 28, 323-333 Torres P, Honrubia M (1994) Inoculation of containerized Pinus halepensis ... O’Neill EG (1991) Effects of ozone and acidic deposition on carbon allocation and mycorrhizal colo- nization of Pinus taeda L seedlings. For Sci 37, 5-16...

Ngày tải lên: 08/08/2014, 18:21

... international IUFRO experiment dealing with the ra - tionalization of young spruce stand tending (A 1977). One part of this series, Machov CZ 14 experi- Effect of stand segmentation on growth and ... 323–329 confirmed under conditions of this investigated locality. CONCLUSION Based on the analysis of a part of results from the international IUFRO trial CZ 14 Machov in...

Ngày tải lên: 07/08/2014, 03:22

... effect of gibberellic acid and ethephon on overcoming beechnut dormancy and stimulation of beechnut germination. MATERIALS AND METHODS Seeds ree beechnut seedlots with a moisture con- tent of ... 4; Fig. 2). We found no apparent effect of different concen- trations of ethephon or GA 3 on germination ca- pacity. e only exception was the application of 1,000 mg·l –1 GA...

Ngày tải lên: 07/08/2014, 10:21

... Individual dispositions of tree, site and climatic conditions of each tree contribute to their forma- tion. Possible damage to trees and change in the growth conditions are frequent reasons for incre- ment ... precipitation of the actual year is most significant for 100% of trees and for almost 80% of trees in this stand, and only for 10% or 5% of trees the precipitat...

Ngày tải lên: 07/08/2014, 10:21

... to adverse mountain conditions and what seedlings are really to be considered as culls. CONCLUSIONS e monitoring of plantations on mountain re- search plots in the course of 10 years showed that ... ERIKSSON G., 1995. Early effects of long nights on budset, bud dormancy and abscisic acid content in two populations of Picea abies. Forest Genet- ics, 2: 207–216. SIMPSON D.G...

Ngày tải lên: 07/08/2014, 10:21

... temperature and rainfall during the five years of study with Pearson correlation based on a significance level of 5% with the t test. The effect of age of the plantation on monthly mean annual number of ... (ºC) and rainfall (mm) (A) and total number of individuals of Lepidoptera (B) and of major (C) and lesser (D) important pests collected in a Eucalyptus grandi...

Ngày tải lên: 08/08/2014, 00:21

... allergies resulting in conjunctivitis, respiratory congestions and asthma [29]. The PPM is one of the most harmful insect that defoliates Pinus and Cedrus and has serious economic importance [2, ... University of Thessalonici, Sc. Ann. Depart. For. Nat. Environ. 28 (1985) 303–370. [23] Markalas S., Problems on the control of the pine processionary moth, Proceeding of the sym...

Ngày tải lên: 08/08/2014, 00:21

... analyzed by means of the meteorological station, of the brand THIES mod. DL- 15, located in the trial zone. Data about temperature and precipitation Figure 1. (A) General distribution area of J. thurifera ... information for under- standing the effects of the treeshelters upon the seedlings in the trial environment. The reduction of radiation inside the shelter could make the plan...

Ngày tải lên: 08/08/2014, 00:22

... of secondary stand with domination of aspens into the stand with dominant spruce and significant admixture of alder in wet part of the experimental plot. 3.5. Comparison of seasonal increment ... corresponding annual ring is practically invis- ible on the cores and consequently a ring from 1999 could be erroneously identified as 2000. Another possible reason of this contradi...

Ngày tải lên: 08/08/2014, 00:22

... elongation phase. The growth units of the genus Pinus, which are clearly structured with three main zones –a scale leaves zone, a brachyblastes (dwarf branches) zone and a tier of branches zone ... corresponds to the section of stem formed during a given growth season [6], comprises one or more growth units (GU). According to Hallé and Martin [21], a growth unit corresponds to the...

Ngày tải lên: 08/08/2014, 01:21