Báo cáo lâm nghiệp: "Effects of elevated carbon dioxide on leaf gas exchange and growth of cork-oak (Quercus suber L) seedlings " pps

... elevated carbon dioxide on leaf gas exchange and growth of cork-oak (Quercus suber L) seedlings C Damesin, C Galera, S Rambal, R Joffre Centre d’écologie fonctionnelle et évolutive, ... con- centration on the carbon gain of Quercus suber seedlings. We examined the effects of CO 2 enhancement i) on leaf gas exchange under we...

Ngày tải lên: 08/08/2014, 18:21

... seasons, especially during summer stress, when drier atmospheric conditions would limit g and A in con- trol plants. The parallelism between A and g variations and the constant concentrations of ... intervals. Consequently, they closed the wound and inhibited fungus colonization. The pathology described was only reflected on leaf gas- exchange and chlorophyll a recording at...

Ngày tải lên: 08/08/2014, 14:21

... separation its recession limb and determining only the runoff con- stituents and their comparison also in the process of time. Similarly, the influence of land use changes on the ratio of runoff ... procedure of hydrograph separation: basic (base flow) and direct runoff (sum of both interflow and overland flow). e direct flow Effects of drainage treatment and stand growth...

Ngày tải lên: 07/08/2014, 03:22

... 6.5%) and natu- rally formed stumps, in which on average only 1% (0–5%) of aboveground CWD carbon is stored. is distribution of carbon stock differs from the distri- bution of CWD volume among ... regions as an in- dicator of forest coarse and fine woody debris carbon stocks in the United States. Carbon Balance and Management, 3:5. Y M. (2001): Chonosequence o...

Ngày tải lên: 07/08/2014, 10:21

... increased 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 ... Weevils of the genus Phyllobius – consumption of food on birch affected by differentiated inputs of nitrogen Fig. 7. e weight of the dry matter of birch leaves affected by th...

Ngày tải lên: 07/08/2014, 10:21

... cations fixed at exchange sites of organic colloids. e values of soil reaction and the C/N ratio from soil samples of a mixed stand are within the limits of the remaining two stands. Carbon and ... 119 JOURNAL OF FOREST SCIENCE, 55, 2009 (3): 119–126 e condition and form of humus in forest man- agement are among key factors affecting the condi- tion and growth of...

Ngày tải lên: 07/08/2014, 10:21

... decreased the seedlings growth (Tab. III). 3.3. Concentration of nutrients in needles When the concentration of nutrients in needles was ana- lysed, interaction between inoculation and type of substrate was ... plus non-inoculated control plants. One-month-old seedlings were inoculated with 10 mL of the target spore suspension of the corresponding fungus. The final inoculum...

Ngày tải lên: 08/08/2014, 00:22

... determine whether the use of different techniques of site preparation influenced the development of different types of vegetation. On the one hand, the specific composition of the twelve sampled ... the summer months [3, 10, 19, 29]. This is the reason why the introduction of seedlings linked to the site preparation focused on concentrating runoff water on the seedling bed...

Ngày tải lên: 08/08/2014, 00:22

... ha of spruce stands were calculated, then these data were analysed with regard to the temporal dynamics of the outbreak and the distribution of attacked stands in relation to slope position and ... affected Norway spruce stands on both sides of the national border. The varying legal regulations governing national park reserves in Slovakia and Poland resulted in the application...

Ngày tải lên: 08/08/2014, 00:22

... effects of treatments and trees on the position of the most proximal offs- pring shoot, the diameter, length and number of nodes of the largest (max.) offspring shoot, the MDR, MLR and MNR, and the ... preformation distribution among buds on the same parent shoot. Neither of the treatments applied at the peak of offspring shoot growth altered the sums of diameters...

Ngày tải lên: 08/08/2014, 00:22