Báo cáo lâm nghiệp: "An analysis of ecophysiological responses to drought in American Chestnut" ppt

... theundocumented ecophysiological responses of pure American chestnut to water stress, and the approaching reintroduction of resistant hybrids, the timing is right to assess the ability of thespecies to survive ... eﬃciency of American chestnut seedlings increases in response to water stress regard-less of the environment under which the seedlings were grown.This increase in water use eﬃciency, found in the ... opposed to xeric sites, prompting theinvestigation of the role of xeric conditions in natural hypovir-ulence biocontrol of the blight fungus [16]. Interestingly, postblight populations of American...

Báo cáo lâm nghiệp: " Current state of beech bark necrotic disease in southern Poland" ppt

... necrotising of crowns (index of crown necrotising – ICN) and of whole trees (index of whole tree necro-tising – INWT). A methodical explication of the indi-ces, which represent, as a matter of ... values of the crown necrotising index. On the contrary, in the evaluation of the degree of whole tree necrotising we did not record a similar increasing trend of INWT with the worsening of the ... the indices of necrotising, it was also conﬁrmed by the values of the frequency of crowns, stems, and whole trees necrotising in individual degrees of necrotising, as given in Tables 4 to 6....

Báo cáo lâm nghiệp: "Element analysis of tree rings in pedunculate oak heartwood: an indicator of historical trends in the soil chemistry, related to atmospheric deposition" ppsx

... radial increments of oldgrowth eastern redcedar to examine the chemicalhistory of the environment. In: Proc of the Int Sympon Ecological Aspects of Tree-Ring Analysis, ... maple in Ver-mont. Vt Agr Exp Sta, RR 53, Univ Vt, Burlington,VA, USA, 9 pOriginal articleElement analysis of tree rings in pedunculate oakheartwood: an indicator of ... — When investigating historical alterations of the soil chemistry, it could be interesting to determine the mineral content of the successive annual tree rings. The study...

Báo cáo lâm nghiệp: " An estimation of willingness to pay for asparagus (Asparagus racemosus Willd.) collectors in Makawanpur District, Nepal" ppsx

... purpose of the one-on-one interview. e meeting was helpful in specifying the starting money for the bidding game. e wording of the questions was written in their own language. In each bidding ... than that of Tamang.Finally, the diﬀerence in WTPs in both scenarios indicates the relative status of asparagus in two forests to both castes. e higher amount of collec-tors’ WTP in Scenario ... each scenario.(ii) Pre-testing of questionnaire and its ﬁnal set-ting. Before formulating the exact wording of the question, two meetings of collectors were organized in February 2002; one for...

Báo cáo lâm nghiệp: "Paternity analysis of Populus nigra L. oﬀspring in a Belgian plantation of native and exotic poplars" doc

... have investigated thegenetic origin of open pollinated offspring of P. nigra detectedno introgression of foreign genes. This is true even in thosecircumstances in which flowering males of P. ... no genes of P. deltoides weredetected in the total offspring analysed. Isozyme analysis of the 5 progenies resulted in a clear banding pattern characteris-tic of P. nigra for all seedlings analysed ... specificalleles of P. deltoides were detected at any of the three isozymeloci investigated (pgi-2, pgm-2, lap-1). Analysis of the locuswin3 resulted in a clear banding pattern for 151/155 seedlingsinvestigated....

Báo cáo lâm nghiệp:"An examination of the interaction between climate, soil and leaf area index in a Quercus ilex ecosystem" ppt

... maxi-mized biomass and minimized drought stress. In the case of anindividual leaf, the minimization of drought stress can bemade through the degree to which the stomata are open. Sto-mata closure ... finding agrees with measurementsobtained by Damesin et al. [13] on the basis of the leaf d13Csignature in Quercus ilex trees growing in a rainfall gradient in southern France. This distinction ... 154 C. Hoff and S. Rambalfall and leaf quantity [33, 43]. Important then are the timing of rainfall and drought events, the quantity of rainfall, the storagecapacity of the soil and...

Báo cáo lâm nghiệp: " An overview of ecology and silviculture of indigenous oaks in France" ppt

... this seems to be thecause of its greater sensitivity to drought and the decline observed in the center of France after the severe droughts of 1996and 1991 (Becker and ... (1993) Oak trees under drought con-traints: ecophysiological aspects. In: RecentsAdvances in Oak Decline Studies (N Linoi, P Ler-ano, A Vanini, eds), Univ Bari, Bari, ... rare in France, and isonly found in the Jura and the Var. In addition to the indigenous species,there are several other exotic species whichhave been introduced into...

Báo cáo lâm nghiệp: " Diurnal evolution of water flow and potential in an individual spruce: experimental and theoretical study" pps

... basins to use this simplifiedversion as a subrnodel.Discussion and ConclusionsThis model was designed to be a workingtool. It has 2 main purposes: 1) to contin-uously ... This fact provides ameans to obtain an estimation of the total re-sistance of the transpirational pathway (Fig. 3).It is possible to determine the 3 parameters(2 resistances ... of the equi-valent circuit having the same transfer function(= transpiration versus absorption). This trans-formation allows those interested in waterbalance of drainage...

Báo cáo lâm nghiệp: "Spatial distribution of four spruce bark beetles in north-western Slovakia" pps

... Ips typographus L. remained dominant species on majority of sites having high intensity of infestation. Lower altitudes in the south-eastern part of the region were often infested by I. duplicatus ... by mi-gration of beetles.CONCLUSIONSI. typographus remained dominant species on the majority of sites having high intensity of tree infes-tation mainly along the main valley in the region. ... for a more eﬀective planning of the control measures, in order to reduce the losses due to bark beetles.e main goals of study are to: – Analyze infested trees growing in various sites and estimate...

Báo cáo lâm nghiệp: " The applicability of the Pipe Model Theory in trees of Scots pine of Poland" ppsx

... a tree in the stand, microclimate, and intensity of tending interventions. Model trees were divided in terms of age into classes, adopted to be 20-year intervals. us trees belonging to age ... the intensity of physiological and biologi-cal processes taking place in the living tree. In order to determine the biomass of the assimila-tion apparatus, a method was applied in the study in ... show-ing the incidence of pipes conductively inactive or periodically inactive. In the dynamic model of crown structure it would be necessary to consider the model including the number of inactive...

Xem thêm

Từ khóa: Báo cáo quy trình mua hàng CT CP Công Nghệ NPV chuyên đề điện xoay chiều theo dạng Nghiên cứu sự hình thành lớp bảo vệ và khả năng chống ăn mòn của thép bền thời tiết trong điều kiện khí hậu nhiệt đới việt nam Nghiên cứu tổ chức pha chế, đánh giá chất lượng thuốc tiêm truyền trong điều kiện dã ngoại 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 Quản lý hoạt động học tập của học sinh theo hướng phát triển kỹ năng học tập hợp tác tại các trường phổ thông dân tộc bán trú huyện ba chẽ, tỉnh quảng ninh Phối hợp giữa phòng văn hóa và thông tin với phòng giáo dục và đào tạo trong việc tuyên truyền, giáo dục, vận động xây dựng nông thôn mới huyện thanh thủy, tỉnh phú thọ Phát triển mạng lưới kinh doanh nước sạch tại công ty TNHH một thành viên kinh doanh nước sạch quảng ninh Phát triển du lịch bền vững trên cơ sở bảo vệ môi trường tự nhiên vịnh hạ long Phát hiện xâm nhập dựa trên thuật toán k means 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)Tìm hiểu công cụ đánh giá hệ thống đảm bảo an toàn hệ thống thông tin Chuong 2 nhận dạng rui ro BT Tieng anh 6 UNIT 2 Giáo án Sinh học 11 bài 15: Tiêu hóa ở động vật Giáo án Sinh học 11 bài 14: Thực hành phát hiện hô hấp ở thực vật HIỆU QUẢ CỦA MÔ HÌNH XỬ LÝ BÙN HOẠT TÍNH BẰNG KIỀM