Báo cáo lâm nghiệp: "The persistence and function of living roots on lodgepole pine snags and stumps grafted to living trees " pdf
Báo cáo lâm nghiệp: "The persistence and function of living roots on lodgepole pine snags and stumps grafted to living trees." pdf
... longevity and location of live roots on lodgepole pine snags and stumps grafted to living trees and to determine whether these live roots affect the diameter growth of living trees. 2. MATERIALS AND ... 10.1051/forest:2006085 Original article The persistence and function of living roots on lodgepole pine snags and stumps grafted...
Ngày tải lên: 07/08/2014, 16:20
Báo cáo lâm nghiệp: "The influence of irradiation on the behaviour and reproduction success of eight toothed bark beetle Ips typographus (Coleoptera: Scolytidae)" doc
... mortality of larvae was high. us, these ex- periments have to continue in the further future to estimate the parameters of F1 and F2 generations. Direct evaluation of irradiation effect to sperm of ... frontal projection typical for males. Separation of sexes of living, hand-held beetles was done using a stereomicroscope (magnification 42 times). Prior to examinatio...
Ngày tải lên: 07/08/2014, 03:22
Báo cáo lâm nghiệp: "Improving RBS estimates – effects of the auxiliary variable, stratification of the crown, and deletion of segments on the precision of estimate" pps
... both on the cumulated value of the target variable beyond a certain stage or segment and the conditional (and concomitantly, on the unconditional) selection prob- ability of the segments of ... reduces to 6.7% after dele- tion of the stem segments. After this closer look at the old pine, the effect of stratification and deletion of the stem segments on the precisi...
Ngày tải lên: 07/08/2014, 03:22
Báo cáo lâm nghiệp: "The evolution of natural floodplain forests in South Moravia between 1973 and 2005" pptx
... the result of centuries of cultivation and selection of a combination of tree species, forest type, and form of its regeneration in order to achieve the best functional and economic yield. ... phytocoenological relevés used to illustrate the complex conditions of the sites. Assessment of phytocoenoses, on the other hand, is based on the monitoring of the he...
Ngày tải lên: 07/08/2014, 03:22
Báo cáo lâm nghiệp: "The effects of flooding and Phytophthora alni infection on black alder" pps
... (Spjtvoll-Stoline test). RESULTS AND DISCUSSION Confirmation of flooding and P. alni infection effects on black alder e analysis of covariance confirmed that the both factors (flooding and P. alni ... flooding and non-flooding condition was Table 1. e effect of long-term flooding and Phytophthora alni infection on the development of black alder saplings Treatment per vali...
Ngày tải lên: 07/08/2014, 10:21
Báo cáo lâm nghiệp: "The survey of some factors affecting bark lesion development caused by Phytophthora cactorum on common beech and other broadleaved trees" pdf
... of season and aggressiveness of isolates on the response of two apple rootstocks to Phytophthora cactorum infection. Australasian Plant Pathology, 36: 240–244. Received for publication October ... species to the pathogen inoculation was sycamore (mean of lesion 48.16 mm; P < 0.05) and the sec- ond one was beech (mean of lesion 22.07 mm). The differences among lesio...
Ngày tải lên: 07/08/2014, 10:21
Báo cáo lâm nghiệp: " The effects of cutting regimes on natural regeneration in submountain beech forests: species diversity and abundance" pdf
... Proportions of woody plant species from the parent stand and of other woody plants in relation to seedlings older than one year. White numbers correspond to the (percent) proportions of beech ... relative illumination in the year after the cut was “only” 22% (Table 1). e propor - tions of beech trees belonging to the first and second classes in the parent stand are hi...
Ngày tải lên: 07/08/2014, 10:22
Báo cáo lâm nghiệp: "The successional status of tropical rainforest tree species is associated with differences in leaf carbon isotope discrimination and functional traits" pot
... CO 2 concentration in air, and a and b are fractionation factors during the diffusion of CO 2 through the stomata and during photosynthetic carboxylation, respectively, that are assumed here to be ... biophysical and natural selection constraints result in the exclusion of some combinations between transpi- rational fluxes and leaf structure or carbon concentrations. In- cluding...
Ngày tải lên: 07/08/2014, 16:20
Báo cáo lâm nghiệp: "The effects of thinning treatments on density, MOE, MOR and maximum crushing strength of Pinus brutia Ten. wood" ppt
... comparison of mechani- cal and physical wood properties, COFORD, Finland, 2000. [53] TS 642 (same ISO 554), Standard atmospheres for conditioning and/ or testing; specifications, Turkish Standard ... Pellerin R.F., Nondestructive evaluation of standing trees with stress wave methods, 12th International Symposium on Nondestructive Testing of Wood, University of Western Hungary, S...
Ngày tải lên: 07/08/2014, 16:21
Báo cáo lâm nghiệp: "The results of manipulated experiments with inoculation of Ips typographus (L., 1758) to spruce trees under various levels" potx
... 0.389 for bottom and middle and P = 0.924 for bottom and top, and P = 0.530 for middle and top trees, t-test). Also the differences in attacks rate and the speed of entry holes preparation between ... slope), – on the trees stressed versus not stressed by elimi- nation of precipitation. Preparation of I. typographus males to experiments Acquisition of wild individu...
Ngày tải lên: 07/08/2014, 03:22