Báo cáo lâm nghiệp: "Response of shoot growth and gas exchange of Picea abies clones to rain acidity and the addition of ions" ppt

... 728-733Response of shoot growth and gas exchange of Picea abies clones to rain acidity and the addition of ionsP. Van ElsackerI. ImpensDepartment of Biology, University of Antwerp ... was to examine the effect of aci-dic wet deposition on C02 exchange, needle conductance and shoot growth of Norway spruce, particularly the effect of acidity and the addition ... between increasing acidity and the addition of the ionic mix-ture. The effect of acidic rain on the Gn of clone 1019 seemed to depend upon envi-ronmental and/ or ecophysiological...

Báo cáo lâm nghiệp:" Needle longevity, shoot growth and branching frequency in relation to site fertility and within-canopy light conditions in Pinus sylvestris" potx

... correlated, indicates that the growth conditions weresimilar throughout the branch life time, and supports the calculation of the bifurcation ratio as the slope of the shoot number vs. shoot age relationship ... demonstratingthat the length of mother shoots controlled the branching lessin the infertile site. The ratio of current needle to shoot axis dry mass (g) waspositively related to irradiance in the fertile ... angle,branch length, and frequency of branching modify the aggregation of the foliage on the branches [19, 20, 40, 78], and thereby change the degree of self-shading within the canopy.Because the requirements...

Báo cáo lâm nghiệp: "Polyamines during somatic embryo development in Norway spruce (Picea abies [L.])" potx

... divided into three stages according to the grade of embryo differentiation: induction of embryogenesis, proliferation and maturation of so-matic embryos, and conversion of mature embryos into complete ... development. Despite of the successful protocol for the establishment of Norway spruce somatic embryogenesis technique, there is a lack of data concerning the endogenous composition of biologi-cally ... influence the induction and somatic embryo devel-opment in less responsive plant genotypes. A stimu-latory effect of putrescine and spermidine on the development of pro-embryogenic masses of Cryp-tomeria...

Báo cáo lâm nghiệp: "Differences in fine root traits between Norway spruce (Picea abies [L.] Karst.) and European beech (Fagus sylvatica L.) " potx

... soil and the lowest (39 kg/ha) at the soil depth of 25–35 cm. Also in the beech stand, the maximum and minimum mortality was observed in the top 5 cm (254 kg/ha) and at the soil depth of 25 to ... 36.5 cm, age of about 80 years. Stocking of the stand was 0.8. Mean tree height of beech in the main canopy was ca 27.5 m, mean dbh 33.0 cm, age of nearly 90 years. Stocking of the stand was 0.9. ... values of pH that might be related to an exposure of the area to high air pollution in the past. e complex of studied stands belongs to the Abieto-Fagetum forest type. Two neighbouring stands...

Báo cáo lâm nghiệp: "Response to an ozone gradient of growth and enzymes implicated in tolerance to oxidative stress in Acer saccharum (Marsh.) seedlings" pot

... stress was too large and possibly exceeded the capacityfor detoxification and repair of the neoformed flush. The de-fensive capacity of these neoformed flush seems to collapseat the end of the season. ... from photorespiration or protein degra-dation constitutes the major source of N in the plant [27]. The high level of NR activity on days 31 and 57, together with the stimulation of the PEPC ... seedlings, total shoot lengthwas separated into two parts: from root collar to the last bud scar(previous year’s growth + spring growth) and from bud scar to ter-minal bud (second flush of growth) . The...

Báo cáo lâm nghiệp: "Response of the Norway spruce (Picea abies [L.] Karst.) root system to changing humidity and temperature conditions of the sit" ppt

... causes of the decline of spruce stands in five selected regions of the Czech Republic – from FAVZ 2 to FAVZ 5 in nutrient-rich and acidic sites. With respect to the size of the pa-per and to the ... Radiměř), the second figure in the code (numeral) expresses the height of the aboveground part of the analyzed trees, the third figure in the code (letter) expresses the health condition of the analyzed ... essential difference in the rooting depth of the whole root system (see Rooting depth of the whole root sys-tem). As the result of disqualification of anchors (due to their rots) the original rooting...

Báo cáo lâm nghiệp: "Response of birch (Betula pendula Roth) phytophages to liming" pdf

... defoliation of birch and the summer 17.8–12.6% loss of assimila-tory area (K, P 2007). Stands of birch differed under the effect of liming in the total loss of assimilatory area in the particular ... corresponded to changes in the fluctuation of species of e.g. the genus Phyllobius. Deviations in the extent of feeding in stands with the application of 1.5 t/ha as compared to the con-trol and higher ... 2007).e aim of the paper is to evaluate the response of some phytophages to changes being in progress in assimilatory organs in the first four years after the application of dolomitic limestone.A...

Báo cáo lâm nghiệp: "Response of Douglas-ﬁr leaf area index and litterfall dynamics to Swiss needle cast in north coastal Oregon, USA" ppt

... from the canopy and by acceler-ated addition of relatively high-quality litter to the forest floor.Quantification of these fluxes should therefore lead to a betterunderstanding of tree and stand ... measurementsA series of permanent plots was used in this study to scale treeleaf area to the stand-level and to relate stand attributes to LAI and foliage litterfall. A total of 26 young plantations ... evaluate the seasonal trend in foliage loss, a model was devel-oped to describe the foliage loss in terms of the proportion of totalfoliage area held by the stand at time of bud break. Date of first...

Báo cáo lâm nghiệp: "Predicting balsam fir growth reduction caused by spruce budworm using large-scale historical records of defoliation" potx

... between the time of inventory and the starting year of calculations.Therefore, the general objective of this study is to test the predictive capacity of the historical records of defoliation to explain ... the number of years of moderate to severe defoliation, and b1 to bi are the parameters to estimate. The names of the other variablesrefer to defoliation codes that are composed of the defoliation ... years, and potential growth was calculated as the summation of the positive terms of the model. These growth losses were expressed as percentages of the ref-erence level. To compute losses of tree...

Báo cáo lâm nghiệp: "Response to natural and simulated browsing of two Mediterranean oaks with contrasting leaf habit after a wildﬁre" docx

... and (iii) the response to browsing of Q. ilex and Q. cerrioides will differ depending on the season of the year when browsing occurs. To test the first hypothesis, we undertook the monitoring of ... mortality of either Quercus species.None of the factors or their interactions affected the number of resprouts per stool (Tab. II). There was a significant effect of species and a very important effect of ... [1]. The large extent of the burned area and the need to replace the traditional exploitation of wood in the pine forests, have promotedextensive land use changes involving the conversion of 2365...

Xem thêm

Từ khóa: Báo cáo thực tập tại nhà thuốc tại Thành phố Hồ Chí Minh năm 2018 Nghiên cứu tổ hợp chất chỉ điểm sinh học vWF, VCAM 1, MCP 1, d dimer trong chẩn đoán và tiên lượng nhồi máu não cấp Một số giải pháp nâng cao chất lượng streaming thích ứng video trên nền giao thức HTTP Biện pháp quản lý hoạt động dạy hát xoan trong trường trung học cơ sở huyện lâm thao, phú thọ Giáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôit Giáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôit ĐỒ ÁN NGHIÊN CỨU CÔNG NGHỆ KẾT NỐI VÔ TUYẾN CỰ LY XA, CÔNG SUẤT THẤP LPWAN NGHIÊN CỨU CÔNG NGHỆ KẾT NỐI VÔ TUYẾN CỰ LY XA, CÔNG SUẤT THẤP LPWAN SLIDE Trả hồ sơ điều tra bổ sung đối với các tội xâm phạm sở hữu có tính chất chiếm đoạt theo pháp luật Tố tụng hình sự Việt Nam từ thực tiễn thành phố Hồ Chí Minh (Luận văn thạc sĩ)Nghiên cứu về mô hình thống kê học sâu và ứng dụng trong nhận dạng chữ viết tay hạn chế Nghiên cứu khả năng đo năng lượng điện bằng hệ thu thập dữ liệu 16 kênh DEWE 5000 Định tội danh từ thực tiễn huyện Cần Giuộc, tỉnh Long An (Luận văn thạc sĩ)Kiểm sát việc giải quyết tố giác, tin báo về tội phạm và kiến nghị khởi tố theo pháp luật tố tụng hình sự Việt Nam từ thực tiễn tỉnh Bình Định (Luận văn thạc sĩ)Quản lý nợ xấu tại Agribank chi nhánh huyện Phù Yên, tỉnh Sơn La (Luận văn thạc sĩ)Tranh tụng tại phiên tòa hình sự sơ thẩm theo pháp luật tố tụng hình sự Việt Nam từ thực tiễn xét xử của các Tòa án quân sự Quân khu (Luận văn thạc sĩ)Nguyên tắc phân hóa trách nhiệm hình sự đối với người dưới 18 tuổi phạm tội trong pháp luật hình sự Việt Nam (Luận văn thạc sĩ)Giáo án Sinh học 11 bài 14: Thực hành phát hiện hô hấp ở thực vật Chiến lược marketing tại ngân hàng Agribank chi nhánh Sài Gòn từ 2013-2015 MÔN TRUYỀN THÔNG MARKETING TÍCH HỢP QUẢN LÝ VÀ TÁI CHẾ NHỰA Ở HOA KỲ