Báo cáo lâm nghiệp: "Partitioning of assimilated nitrogen in beech (Fagus sylvatica)" pot

... primary source mate- rials in the translocation flux of nitrogen- ous compounds to shoots in beech. The percentages of assimilated 15 N in amino acids in the xylem sap were ... distri- bution of nitrogen in young apple trees after application of nitrate or ammonium, with special reference to asparagine and arginine. Physiol. Plant 45, 2...

Ngày tải lên: 09/08/2014, 04:20

... 395–436. [14] Tagliavini M., Millard P., Quartieri M., Marangoni B., Timing of nitrogen uptake affects winter storage and spring remobilisation of nitrogen in nectarine (Prunus persica var. nectarina) trees, ... During the fol- lowing weeks, however, partitioning of labelled N increased in the shoots and decreased in the roots in the elevated treatment, and at Week 12, no di...

Ngày tải lên: 08/08/2014, 00:21

... E grandis. Despite reports of (often dramatic) increases in growth of E. grandis following application of nutrients, we have little understanding of physiological mecha- nisms ... 1985). In this paper, we ex- amine the way in which rate of nitrogen supply to E. grandis seedlings affects allo- cation of dry matter. Material and Methods Seedl...

Ngày tải lên: 09/08/2014, 04:20

... 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 ... them to use in many forestry disciplines (mostly for determination of the health conditions of forests stands, ), in combination with the remote sensing of the Earth and GIS (Geog...

Ngày tải lên: 07/08/2014, 03:22

... threshold. e ingrowth model accord- ing to L (2002) consists of species specific sub-models for direct estimation of (i) the potential for ingrowth as well as (ii) the number of ingrowth ... eleva- tion of 505 m. e individual-tree and site specific input data for PA had been determined in 23 sample plots in stands with different proportions of Norway spruce and...

Ngày tải lên: 07/08/2014, 03:22

... S.K., 1968. A revised survey of forest types of India. Delhi, Delhi Manager of Publica- tion. CHATURVEDI O.P., SINGH J.S., 1987. e structure and function of pine forest in central Himalaya. II. ... there is a lack of knowledge con- cerning the quantification of nutrient content in the aboveground biomass of teak plantation in a tropical dry deciduous forest of Rajast...

Ngày tải lên: 07/08/2014, 03:22

... within deter- mined transport areas according to RPFD, calcula- tion of opening-up indicators according to Beneš; – comparing numbers of present opening-up in - dicators with indicators of optimal ... composed of forest map grid, level of forest road, level of cho- sen transport areas from RPFD and level of points of concentrated fellings. e network of points of concen...

Ngày tải lên: 07/08/2014, 04:20

... 'I-214' was also included in this group. Mean dbh of the top fi ve clones varied in the range of 16.50–19.86 cm, mean tree height was in the range of 13.87–15.29 m, mean annual increment 2.30–2.65 ... clones in the area of Laborec in conditions of the Eastern Slovakia. Zprávy lesnického výzkumu, 44: 14–18. (in Slovak) K Š. (2008): In uence of ground...

Ngày tải lên: 07/08/2014, 10:21

... after the thinning similarly like in previous years. Positive ef- fects of the high-type thinning in 2001 were reflected in the 17%increase of LAI in 2002. e realized thin- ning exhibited ... 1997). Positive effects of thinning in 2001 were reflected in the 17%increase of LAI in 2002. Reaching or exceeding of the critical LAI value was responsible for a decrease...

Ngày tải lên: 07/08/2014, 10:21

... radius of a circle to the beginning of late wood, P – earlywood area in annual ring. Total area of early wood rings within the sapwood zone constitutes the conducting area – CA. Mean area of early ... except for co-dominant trees from Fig. 1. A comparison of size of conducting area (CA) in ageA comparison of size of conducting area (CA) in age classes and forest site...

Ngày tải lên: 07/08/2014, 10:21