Báo cáo lâm nghiệp: "The effects of elevated CO 2 and water stress on whole plant CO 2 exchange, carbon allocation and osmoregulation in oak seedlings" docx

... 33, 20 1 -21 1 Carbon isotope composition and new carbon allocation Carbon isotope composition of all nonla- belled plants was on average 17‰ more negative in plants in ... elevated atmospheric CO 2 concentration and water stress. More precisely, i) carbon allocation ( 1 3CO 2 labelling) to the different plant components...

Ngày tải lên: 08/08/2014, 18:21

... (Spjtvoll-Stoline test). RESULTS AND DISCUSSION Confirmation of flooding and P. alni infection effects on black alder e analysis of covariance confirmed that the both factors (flooding and P. alni infection) ... leaves con- taining no marks of alteration, disease symptoms or signs of insect grazing and sucking were detached from the plants and rinzed in 95% ethanol (5 s...

Ngày tải lên: 07/08/2014, 10:21

... 20 03 1989 20 03 1989 20 03 1989 20 03 Number of trees/ha 700 627 397 349 24 3 22 6 160 160 0 0 Height (m) 23 .6 26 .3 25 .4 28 .6 26 .9 29 .5 27 .7 30.0 – – dbh (cm) 23 .9 27 .6 29 .4 34.5 31.3 38.5 32. 0 41.4 ... group consisting of beech and willow. e results of ANOVA in Table 3 indicate a signifi - cant in uence of different cutting operations on the number...

Ngày tải lên: 07/08/2014, 10:22

... p i ()ln ∑ –= x 2 y 2 + d c / 2( ) 2 zh t l c / 2 ()– l c / 2   2 + 1= r 2 x 2 y 2 + d c / 2( ) 2 d c / 2( ) 2 · hh t l c / 2 ()–[] 2 l c / 2( ) 2 –== V i π h i1 h i2 ∫ · r 2 dh= p i V ji j ... diversity determination is relative to the con- ditions of the area concerned. Considering the growing condi- tions of central and southern Europe, s...

Ngày tải lên: 08/08/2014, 01:22

... concentration neither in seedlings nor in their components. Time or lifting effects on C:N in the different seedling components were inversely related to those in N concentration. Total carbon ... Changes in partitioning of total, old, and new carbon and nitrogen in various components of intact or lifted one-year-old Cor- sican pine seedlings grown in a controlle...

Ngày tải lên: 08/08/2014, 01:22

... dur- ing the course of the study using a combination of herbicides and mowing. Glyphosate was sprayed on the plot before the study began, and again in the early spring of ... that in 1990. CONCLUSION This study indicates that trimming off part of the radicle of germinated blue oak acorns prior to planting has little or no influenc...

Ngày tải lên: 08/08/2014, 18:21

... then on days 2, 9, 16, 23 and 30 after trans- planting. In experiment 2, seedlings were transplanted in minirhizotrons. The plants were given optimal fertilization and the ... parallel decline in both C0 2 assimila- tion and stomatal conductance occurred from day 0 to day 9 after transplanting (Fig. 1a and b); afterwards the decline co...

Ngày tải lên: 09/08/2014, 04:20

... temperature and S0 2 + N0 2 pollution on the new season’s growth and water relations of Picea sitchensis. New Phytot. 1 O6, 22 5 -23 7 Heath R.L. (1980) Initial events in injury to plants ... pollution and cold stress on plants. Environ. Pollut. 43, 15 -28 Lucas P.W., Cottam D.A., Sheppard L.J. & Francis B.J. (1988) Growth response...

Ngày tải lên: 09/08/2014, 04:20

... both water limited and waterlogged conditions [9, 27 ]. Photosynthesis would also be inhibited due to the increased participation of competing pathways and consumption of electrons and reductant in ... using equation 5 [15]: (5) where C i is the internal CO 2 concentration, Γ* is the CO 2 compensa- tion point in the absence of mitochondrial respiration and R d i...

Ngày tải lên: 08/08/2014, 00:22

... Large area of such stands along with compound of biotic and abiotic stressors (air pollu- tion, degradation and compaction of soil, nutrients exhaustion, increased activity of pests and patho- gens) ... position on slope and on stressed versus unstressed trees; – analysis of I. typographus attacks rate and speed of boring on more stressed versus less stressed t...

Ngày tải lên: 07/08/2014, 03:22