Báo cáo lâm nghiệp: " Soil and tree water relations in matur

Báo cáo lâm nghiệp: " Soil and tree water relations in mature oak stands of northern Germany differing in the degree of decline" pdf

... per branch was determined. Original article Soil and tree water relations in mature oak stands of northern Germany differing in the degree of decline FM Thomas G Hartmann Niedersächsische ... reduced in the stands of the Hakel Forest. In these stands, the tensiometers were placed within an area of about 20 m * 10 m. Since...

Ngày tải lên : 08/08/2014, 18:21

24
225
0

Báo cáo lâm nghiệp: " Soil and plant communities development and ecological effectiveness of reclamation on a sand mine cast" ppt

... (D et al. 2001) and the bank of the Sulphur Mine in Piaseczno (South Poland). ere was an increase in the percentage of C org in the Ai horizon corresponding to the age of the area; however ... with the age of the area. e amount of carbon and energy trapped in biomass and soil was twice higher in a forest ecosystem restored on post-mining...

Ngày tải lên : 07/08/2014, 10:22

12
411
0

Báo cáo lâm nghiệp: "Soil characteristics under selected broadleaved tree species in East Norwa" docx

... taken into mind discussing the interrelationships between the soil properties and the tree species. Diﬀerences among particular soil horizons e results of the testing for diﬀerences in selected ... D et al. 2001), indicating that other factors, as the chemical composition of the parent material and the soil texture, can discriminate the in uence of...

Ngày tải lên : 07/08/2014, 03:22

12
313
0

Báo cáo lâm nghiệp: "Soil environment and nutrient status of Norway spruce (Picea abies [L.] Karst.) underplantings in conditions of the 8th FAZ in the Hrubý Jeseník Mts" potx

... mg·kg –1 . In the subsequent organomineral horizon (Ae/Ep) the values of Ca indicate the lower optimum reserves in the range of 80–160 mg·kg –1 , and in 15% of the studied plots the content of soil ... 149 derplantings increases with a decreasing content of these nutrients in needles. An opposite correlation was determined for aluminium: with an increasin...

Ngày tải lên : 07/08/2014, 10:21

12
529
0

Báo cáo lâm nghiệp: "Survival and growth of outplanted seedlings of selected tree species on the High Tatra Mts. windthrow area after the first growing season" pps

... resulted from 2004 windbreak in the High Tatra Mts. as very endangered from the viewpoint of the mechanical eﬀect of wind. Regarding the stabilization of stands against wind the author emphasised ... the seedling types of pine was almost 20% in autumn and even 42% in spring outplanting. However, es- pecially the comparison of bareroot and container- iz...

Ngày tải lên : 07/08/2014, 10:21

10
399
0

Báo cáo lâm nghiệp: "Linking intra-tree-ring wood density variations and tracheid anatomical characteristics in Douglas ﬁr (Pseudotsuga menziesii (Mirb.) Franco)" pot

... CWP and MMD a decreased within the first half of a tree- ring; then it reached a plateau, and remained constant in the second half of the tree- ring (Fig. 2B). Correlations were high between the ... characteristics independently, in order to evaluate their relative in uences on wood density. For the first set of simulations, all the variables in the model were fi...

Ngày tải lên : 07/08/2014, 16:20

8
366
0

Báo cáo lâm nghiệp: "Drought conditioning improves water status, stomatal conductance and survival of Eucalyptus globulus subsp. bicostata seedlings" ppt

... sessile leaves, in each selected leaf, the base of the lam- ina was cut with a sharp blade, and then they were placed in the chamber with the main vein protruding through the chamber opening. RWC ... periods using the fol- lowing equation: RGR (g g −1 d −1 ) = ln M 2 –lnM 1 / t 2 – t 1 ,whereM 1 and M 2 are dry mass at the beginning and the end of the samplin...

Ngày tải lên : 07/08/2014, 16:20

10
469
0

Báo cáo lâm nghiệp: "Soil carbon dioxide eﬄux in pure and mixed stands of oak and beech" potx

... and mixed stands. The soils of all stands are well drained; the ground water is below 1.5 m depth during the growing season and rises in winter up to 30–45 cm depth. In each stand, all trees were measured ... patterns of soil temperature (a) and soil water content (b) in the oak, mixed and beech stands (zones without moisture treatment, n = 3) and com...

Ngày tải lên : 07/08/2014, 16:20

10
344
0

Báo cáo lâm nghiệp: "Leaf and whole-plant water relations of the Patagonian conifer Austrocedrus chilensis (D. Don) Pic. Ser. et Bizzarri: implications on its drought resistance capacity" ppt

... green- house in the EEA INTA Bariloche, Argentina. In addition, we carried out some of these measurements in adult plants growing in sites with climatic conditions similar to those of the saplings origin. 2. ... were installed on the south side of the trunk of each tree and covered with a radiation and rain shield to eliminate bias caused by radiation heating. Me...

Ngày tải lên : 08/08/2014, 00:21

6
369
0

Báo cáo lâm nghiệp: "Seasonal and intraspecific variation of frost tolerance in leaves of three Canarian laurel forest tree species" doc

... growing in the Canary Islands in order to understand whether the effect of freezing temperatures in the past could be the cause of their present confinement. Chlorophyll fluorescence as an indicator ... to the Atlantic islands where the weather conditions are milder. There are two main con- straints in the Mediterranean habitat for these plants, cold during the...

Ngày tải lên : 08/08/2014, 00:22

6
261
0