Báo cáo lâm nghiệp: "Botanical determinants of foliage clumping and light interception in two-year-old coppice poplar canopies: assessment from 3-D plant mock-ups" ppsx

... 10.1051/forest:2007016 Original article Botanical determinants of foliage clumping and light interception in two-year-old coppice poplar canopies: assessment from 3-D plant mock-ups Eric C a * ,HervéS  b a Forest ... alternating inter-row dis- tances of 0.75 m and 1.5 m, and a within row spacing of 0.9 m, to yield a planting density of 1...

Ngày tải lên: 07/08/2014, 16:21

... 690 kg.ha -1 of ’scories Thomas’, containing 110 kg of P2O5 and 345 kg of CaO; and 400 kg.ha -1 of ’patenkali’, containing 120 kg of K2O and 40 kg of MgO. Nitrogen ... in the radial growth increment of pine stands on a drained bog.] Lesnoi Zhurnal 1, 15-18 Richardson J (1981) Growth of natural tree seedlings on a fen following...

Ngày tải lên: 08/08/2014, 18:21

... 2005. Effect of wood ash fertilization on stand growth, soil, water and nee- dle chemistry, and berry yields of lingonberry (Vaccinium vitis-idaea L.) in Scots pine stand in Finland. Metsandus- likud ... to interpret the foliage and soil analyses, and to find possible indications in the soil -plant relation in Scots pine stands. MATERIAL AND METHODS Wood ash and n...

Ngày tải lên: 07/08/2014, 03:22

... the transfer of uropodine mites: (1) individuals vectoring mites and (2) individuals not vectoring mites. Testing for dif- ferences in the number of individuals between group 1 and group 2 ... composition in the study area was as follows: T. pecinai (965 individuals and 94.6%), T. obscura (48 individuals and 4.7%), U. vinicolora (6 individuals and 0.6%) and U. ipidis...

Ngày tải lên: 07/08/2014, 03:22

... classified and described in detail. Assessment of the ecological stability of the forest stand was carried out using biogeographical differentiation of the landscape and the outline of the forest ... while respecting the principles of environmentally friendly forestry management. Planting of multi-storeyed and species-rich stands, with English oak and common ash in...

Ngày tải lên: 07/08/2014, 03:22

... distribution of losses in growth of trees caused by the feeding of pine shoot beetles Tomicus piniperda and T. minor (Col., Scolytidae) in Scots pine stands growing within range of the in uence of a ... e mean shoot fall in individual years indicated a high intensity of beetle feeding in pine crowns in 2002 in the marginal part of the stand (Table 1). Dur-...

Ngày tải lên: 07/08/2014, 04:20

... polluted area, pollutants originating esp. from lignite mining, processing and burning and from oil refineries. In Middle Ages a centre of ore mining and processing. 11 Český les (Bohemian Forest) 14 ... in Slovakia is very rich especially in chromium and zinc, and also in cadmium and lead. It is due not only to air pollution but also to the in uence of bedroc...

Ngày tải lên: 07/08/2014, 10:21

... within relevé groups and correla- tions of variables in the CCA (Figs. 1 and 2). e most distinguished difference in the EIV oc- curred in soil reaction and nutrients, showing the decrease of ... increase of acidophytes, resulting in lower richness than in hardwood stands. e negative ef- fect of Picea abies on diversity and cover of vascular plants was also foun...

Ngày tải lên: 07/08/2014, 10:21

... initially increasing with increasing cutting intensity, and, having reached the peak on plot M (medium intensity), there followed a decrease in the seedling abundance. Lower numbers of beech seedlings ... increasing cutting intensity. e ANOVA results document a significant in uence of cutting intensity on the abundance of both one-year-old and older seedlings. e abundance of...

Ngày tải lên: 07/08/2014, 10:22

... of wood species containing the extracts used to impregnate poplar wood and ∆E* of impregnated poplar. case; it lightens while pine and poplar darken, but it is known to contain an unstable dye ... to lighten the role of extractives in reactions spoiling colour of wood submitted to solar-type irra- diation, and examine links between colour stability of a wood and anti...

Ngày tải lên: 07/08/2014, 16:20