Báo cáo lâm nghiệp: "Gaps promote plant diversity in beech forests (Luzulo-Fagetum), North Vosges, France" docx

... farfara –0.03 Gaps promote plant diversity in beech forest 439 APPENDIX. Mean abundance indices (Van der Maarel) of each species, in the different layers, under forests and in the gaps. Forest ... and therefore winds- torm had, at least in the short-term, a positive effect the plant diversity. This higher species diversity resulted mainly to an increase in light envir...

Ngày tải lên: 08/08/2014, 00:22

... asparagine, glutamine, etc.) remaining in the root cells may sub- sequently undergo: 1) incorporation into other amino acids for root protein syn- thesis and 2) storage in the ... asparagine and arginine are the primary source mate- rials in the translocation flux of nitrogen- ous compounds to shoots in beech. The percentages of assimilated 15...

Ngày tải lên: 09/08/2014, 04:20

... seedlings and plants according to the Czech standard (J et al. 2002). But for the time being there are not many papers dealing with the root -plant ratio changes after planting in the ... root system in terms of plant growth remains stable at least in that first growing period of plant in the forest disregarding their functions of conduction and embedding. CONCLUSIONS...

Ngày tải lên: 07/08/2014, 03:22

... community biomass. In both cases, trees had a dominant share in trapping energy in biomass although the increase in energy accumulation in this layer in a chronosequence was much higher in reclaimed ... 554–565 grain size distribution. According to studies in Spain it was reported that the organic carbon content in upper horizons of initial soils was 3.0% already in...

Ngày tải lên: 07/08/2014, 10:22

... fungal diversity in Danish beech forests, Forest Ecol. Manage. 201 (2004) 105–119. [12] Heilmann-Clausen J., Christensen M., Wood-inhabiting macrofungi in Danish beech- forests – conflicting diversity ... for the diversity of wood- inhabiting fungi in temperate broadleaf forests, Biol. Conserv. 117 (2004) 1–10. [22] Osono T., Takeda H., Organic chemical and nutrient dynamics...

Ngày tải lên: 07/08/2014, 16:20

... showed 86% of individuals collected. This indicates an adequate biological balance in eucalyptus plantations in this area with predominance of individuals of non-pest status. These individuals ... Australia, Indonesia, Papua New Guinea and Phil- ippines [14] and they belong to the Myrtaceae family. This can explain the adaptation of insects that feeds on endemic levels in native plants...

Ngày tải lên: 08/08/2014, 00:21

... meadows increased. Accordingly, increased nutrient availability as well as human activity is considered to affect plant invasions positively in the investigated pine forest ecosystems. In particular, ... who point out a positive effect of habitat disturbance and nutrient availability on plant invasions. 5.3. Reversibility and irreversibility of the plant invasions in pine fores...

Ngày tải lên: 08/08/2014, 00:22

... points. For the accuracy determination of stereo interpretation the coordinates of well identified points (features) on the aerial image and terrain were used. e co- ordinates of these points ... bring the expected results although the attained accuracy of point position was quite good. However, other meth- ods how to achieve the goal were searched, including the testing of digital inte...

Ngày tải lên: 07/08/2014, 03:22

... area increment model for individual trees growing in even- and uneven- aged forest stands in Austria. Forest Ecology and Manage- ment, 80: 57–80. MONSERUD R.A., STERBA H., 1999. Modelling individual ... Plenter forests (T 1991). M (1976) mentions a volume per hectare between 300 m 3 /ha and 700 m 3 /ha for Plenter forests in the Allgäu region in Germany, depending...

Ngày tải lên: 07/08/2014, 03:22

... nutrient absorption in forest plantations is closely associated with the increase in biomass and attains its maximum in the initial stage of a rotation period (M 1989). According to V D ... amount of nutrients is accumulated in lit- ter and other aboveground deposits in the forests, due to the low activity of decomposing organisms in tropical forests inhibited by...

Ngày tải lên: 07/08/2014, 03:22