Báo cáo lâm nghiệp:" Hydrological and climatic responses of Pinus elliottii var densa in mesic pine flatwoods Florida, USA" pptx

... 10.1051/forest:2003030 Original article Hydrological and climatic responses of Pinus elliottii var. densa in mesic pine flatwoods Florida, USA Chelcy Rae FORD a,b , Jacqueline Renée BROOKS c * a Department of Biology, ... are helping restore the remaining stands and initiate new ones. Three stands of P. elliottii var. densa flatwoods occurring along a...

Ngày tải lên: 08/08/2014, 01:21

... west of the city of Gujiao, Shanxi Province, in 2004. Adults were sexed and maintained in an incubator at 25 ◦ C and 55% RH, under a light-dark cycle of 14L:10D before being used in EAG and bioassay ... Management of Pest Insects and Rodents, Institute of Zoology, the Chinese Academy of Sciences, Beijing 100080, PR China b Graduate School of Chinese Academy of Sc...

Ngày tải lên: 07/08/2014, 16:20

... stage of seedlings and the drought period on Ψ shoot pd and Ψ shoot d (p < 0.001), both being lower in growing seedlings than in dormant seedlings after the third and fourth week of drought. Both ... planting, root egress of growing seedlings showed a considerable decline. On the other hand, root egress in dormant seedlings was rather insensitive to drought, and was...

Ngày tải lên: 08/08/2014, 00:21

... found in our study. In Spain and Portugal, F et al. (2004) indicate March–April as the most com- mon farrowing period and Santos gives the be- ginning of March to the end of April. In southern ... misleading because of difference among the various studies in how the individuals were cat- egorized into age classes. Comparing of juvenile and sub-adult individuals...

Ngày tải lên: 07/08/2014, 10:21

... concentrations of St at the beginning of autumn [2], coinciding with the date of harvest in our study, while ever- greens do so at the end of winter, just before bud break [14]. In the case of N, the ... trajectories of N were 4–1 in Q. coccifera and 1 in the remaining species (Fig. 3). 3.2. Effects of watering The response of DM to watering differed across species (Ta...

Ngày tải lên: 07/08/2014, 16:20

... seedlings growing in the open area, higher values in the gap and the highest values in seedlings growing under shelterwood, ex- plained these diff erences by increased photoinhibi- tion in beeches ... observed in seedlings from both the 4 th and the 7 th FAZ during the whole growing season (Fig. 2). Higher maximum values of ETR in unshaded seedlings of various tree s...

Ngày tải lên: 07/08/2014, 10:21

... growth termination at the beginning of autumn. e height growth was evalu- ated according to the parameters of all living fir indi- viduals in 2007 and according to 20% of the highest individuals ... differences in mortality between the planting variants and by the survival of declining individuals with the growth stagnation. Nutrient state of the tested plantings was indi...

Ngày tải lên: 07/08/2014, 10:22

... forests are located in a bipolar way in Cuba cover- ing certain zones of the East and West part of the island. In W Cuba, pine forests are primarily abundant in the Pinar del Río province, from San ... four endemic pine species in Cuba. They form mixed and pure stands in the western part of the island where fire is an important factor affecting pine distribution and...

Ngày tải lên: 07/08/2014, 16:20

... sequestration, Springer-Verlag, Berlin, 2003. [7] Cox P., Wilkinson S.P., Anderson J.M., Effects of fungal inocula on the decomposition of lignin and structural polysaccharides in Pinus sylvestris ... profile. The length of arrow indicates the relative importance of the variable in explaining the position of the tree species in the ordination space. The angle between the arr...

Ngày tải lên: 07/08/2014, 16:20

... basis of increasing basal area and aerial biomass and decreasing values of all other structural measures. The DCA ordination based on species presence was also consistent in discriminating the ... Principal Components Analysis of some of the canopy variables of the plots. Axis I eigenvalue was 0.83 (83% of the cumulative percentage of variance), and axis II eigenvalue wa...

Ngày tải lên: 07/08/2014, 16:20