Báo cáo lâm nghiệp: "The above- and belowground carbon pools of two mixed deciduous forest stands located in East-Flanders (Belgium)" pot

... pp. 177–222. 516 I. Vande Walle et al. Original article The above- and belowground carbon pools of two mixed deciduous forest stands located in East-Flanders (Belgium) Inge Vande Walle a,* , Sylvie ... I). The main tree species, being oak and beech Carbon pools in two deciduous forest stands 513 Table IV. Contribution of the main tree species in...

Ngày tải lên: 09/08/2014, 04:20

... far side of the stump two years after manual thinning (P = 0.140, Fig. 2). Tree ring index (TRI) of the leave trees in the manual thin- ning study significantly increased following removal of the surrounding ... snags and stumps in the natural mortality and manual thinning studies. Living roots on the stumps or snags were placed into two categories; those located < 90 ◦...

Ngày tải lên: 07/08/2014, 16:20

... application of the treatments, no difference in inter-row weed biomass was found between the mowed plots (M) and the control (V) (Tab. I). The applica- tion of herbicides in the beginning of the growing ... treatments practiced in this study differed in their success in terms of controlling the weeds. Two months after the application of the treat- ments, the presence of...

Ngày tải lên: 07/08/2014, 16:20

... (co- balt 60). Because of possible problems concerning the rearing of irradiated individuals, the rearing was done in large numbers of individuals and each dose was carried out in five replications. ... shortly prior to the beginning of rearing. Number and sex ratio of the F1 offspring were not identified in this study, because of the low number of emerged beetles i...

Ngày tải lên: 07/08/2014, 03:22

... controlling soil carbon and nitrogen stores in pure stands of Norway spruce (Picea abies) and mixed species stands in Austria. Forest Ecology and Management, 159: 3–14. BINKLEY D., GIARDINA C., ... Distribution of pH H 2 O in layers of forest floor and organomineral horizon in different experimental stands Fig. 3. Distribution of pH KCl in layers of...

Ngày tải lên: 07/08/2014, 03:22

... relevés. The increasing trend in the number of recorded species may, however, also mean the movement of some of the ecologi- cal factors. In the case of floodplain forests, one of the most ... cam- pestre. e loosening of the canopy due to dying and fall of some of the large oaks is a condition crucial for the development of level 3. e increasing EIV for the light...

Ngày tải lên: 07/08/2014, 03:22

... 149 derplantings increases with a decreasing content of these nutrients in needles. An opposite correlation was determined for aluminium: with an increasing proportion of this element in nutrition ... limit of the lower optimum of 130 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...

Ngày tải lên: 07/08/2014, 10:21

... 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) and their combination significantly in uenced ... and actinorrhiza biomass and foliar length and biomass. Infection had the most prominent effect on actinorrhiza biomass (F = 32.76, P < 0.001). e interac...

Ngày tải lên: 07/08/2014, 10:21

... C.M., J T. (2003): Progress in understanding Phytophthora diseases of trees in Europe. In: MC A.J., H G.E.S.J., T I. (eds): Phytophthora in Forests and Natural Ecosystems. Perth, ... Research Institute for Landscape and Ornamental Gardening, Průhonice, Czech Republic ABSTRACT: e three experiments relating to the pathogenicity of Phytophthora cactorum to be...

Ngày tải lên: 07/08/2014, 10:21

... in uence of cutting intensity on the abundance of both one-year-old and older seedlings. e abundance of beech seedlings was initially increasing with increasing cutting intensity, and, having ... cutting was primarily focused on the admixed species, dying and damaged trees and trees of very low quality. e main characteristics of research plots, cutting intensity and r...

Ngày tải lên: 07/08/2014, 10:22