Báo cáo lâm nghiệp: "Ultrasound acoustic emission in water-stressed Picea abies Karst" ppt

... ultrasonic acoustic emissions from the stems of potted saplings of Picea abies Karst. during the summer, relating these to transpiration rate and water potential, since this ... on plants among the 10 belonging to each group. The 6 remaining plants in each treatment were used for measurements of acoustic emission rate using a broad band Br...

Ngày tải lên: 09/08/2014, 04:20

... D, including the dinucleotide SSRs; set T, including the trinu- cleotide SSRs; set C, with the chloroplast SSRs. This allowed us to study the effects of the repeat type and of the mode of inheritance ... is seldom taken into account by practitioners when drawing inferences from data. Our re- sults stress the importance of introducing “reference” data sets in population studies, in order to...

Ngày tải lên: 07/08/2014, 16:20

... vitality in older injured trees showed an increase. Mycorrhizal infec- tion in younger injured trees was not affected while older injured trees exhibited an increased mycor- rhiza infection. e injury ... affected the original rooting depth in the injured trees (see Rooting depth of the operating root system). All injured trees exhibited an up to 50% decrease in fine root biomass. Y...

Ngày tải lên: 07/08/2014, 03:22

... sets In 1995, the Saxon Forest Research Institute in Graupa, Germany, initiated a large international provenance test in co-operation with the For- estry and Game Management Research Institute in ... every individual tree. e two provenance trials included in this study were estab- lished in spring 1995 using three-year-old plantings. Norway spruce provenances from Germany wer...

Ngày tải lên: 07/08/2014, 03:22

... H Age X Y 1 1 2 Picea abies 23 20.5 47 1.3 24.2 1 2 2 Picea abies 27 19.0 52 4.6 24.6 1 3 2 Picea abies 21 19.0 45 7.8 31.2 1 4 2 Picea abies 26 21.0 55 12.5 22.5 1 5 2 Picea abies 18 14.5 42 ... 11.6 19.1 1 6 2 Picea abies 23 17.5 50 18.6 23.0 1 7 2 Picea abies 23 19.0 50 18.6 20.7 1 8 2 Picea abies 21 20.5 44 20.4 19.2 1 9 2 Picea abies 17 14.0 42 23.0 18...

Ngày tải lên: 07/08/2014, 03:22

... after harvesting. By initially decreasing over- storey density and basal area, canopy openings created by logging triggered a rapid increase in recruitment into the seedling and sapling layers. ... associations of Pinus ko- raiensis and Tilia amurensis in broad-leaved Korean pine mixed forest in Changbai Mountain. Chinese Journal of Applied Ecology, 18: 1681–1687. (In Chinese) Corr...

Ngày tải lên: 07/08/2014, 03:22

... prevailing oak in the top layer and coppice in the bottom layer proved very interesting from an economic point of view, and the coppice-with-standards form remained in use in many floodplain forests ... vegetation zone according to Z (1976). e prevailing forest type groups are elm ash weed plain, from the geobiocoenologi- cal viewpoint Ulmi Fraxineta carpini of the higher...

Ngày tải lên: 07/08/2014, 03:22

... deter- mined in the Jelení hora hunting district in 2007 and 2008 using the FSC method, viz 24 ± 23 individuals·km –2 (95% CI) and the CPM method, viz 105 ± 88 individuals·km –2 (95% CI) and in ... to obtain objective data on the actual abundance of free-living animals in a certain area. Methods of direct counting are hardly utiliz- able in forest areas (B, P 1981)....

Ngày tải lên: 07/08/2014, 10:21

... anthropogenic pressure in uencing the landscape structures in the vicinity of the linear construction in the form of a motorway, and especially due to the accompanying structures of linear or polygon ... having service functions. e individual images were fixed into a system of coordinates. A line set on the layer modified in this manner designates the centre of the motorway with...

Ngày tải lên: 07/08/2014, 10:21

... intended mainly for the pulp industry and class D1 includes fuel wood. e volume of larger decay or cavity, mainly in lower parts of stems, was included in waste. In 2007 the standard STN 48 ... suitable even as fuel wood. According to the purpose of industrial use classes A1 and B1 are the highest-quality classes being intended mainly for the production of industrial ve- neer whi...

Ngày tải lên: 07/08/2014, 10:21