0
  1. Trang chủ >
  2. Luận Văn - Báo Cáo >
  3. Báo cáo khoa học >

Báo cáo lâm nghiệp:" Comparison of soil water-contents as measured with a neutron probe and time domain reflectometry in a " ppsx

Báo cáo lâm nghiệp:

Báo cáo lâm nghiệp:" Comparison of soil water-contents as measured with a neutron probe and time domain reflectometry in a " ppsx

... 10.1051/forest:2003011Original article Comparison of soil water-contents as measured with a neutron probe and time domain reflectometry in a Mediterranean forest (“Sierra de Gata”, Central Western Spain)Mar a Amparo ... usefulinformation about the actual evapotranspiration, drainage, and leaching [14]. Over the past decade, interest in water fluxes in natural ecosystems has increased owing to the appearance of evidence ... of evidence of changes in the annual distribution of rainfall and a hypothetical reduction in the actual evapotranspiration as a consequence of the global change [4, 21], and alsohydrological changes induced...
  • 9
  • 353
  • 0
Báo cáo lâm nghiệp:

Báo cáo lâm nghiệp: "Comparison of the impact of blue spruce and reed Calamagrostis villosa on forest soil chemical properties" pot

... element in plant biomass and undecomposed litter. Conse-quently, the swards of grasses were demonstrated to mitigate the acidification of soil solution and the leaching of basic cations of Ca and ... acidification and base cation losses in a deforested mountain area a ected by acid deposi-tion. Plant and Soil, 268: 35–49.Table 4. Mean content of dry matter, nutrients and humus in humus layers ... the exception of magnesium, the content of nutrients rapidly lowered with increasing depth of soil (Table 3).Also share of carbon and nitrogen was very similar in both soil variants. K...
  • 7
  • 468
  • 0
Báo cáo lâm nghiệp:

Báo cáo lâm nghiệp: "Comparison of mycobiota of diverse aged spruce stands on former agricultural soil" pot

... and- rosaceus was detected. Rare species found here were: Russula azurea, Russula badia, Russula emetica, Amanita fulva, Amanita porphyria. is plot, typical of submountain and mountain natural ... pH evaluation). e method called as “pH–H2O” is based on measuring pH of soil samples to which water is added in volume ratio 1:5, and after 5 minutes of agitating and standing for minimum ... most abundant were Cortinarius sp. and Hebeloma crustuliniforme, while a year before and a year after these species were less numerous. Laccaria laccata was most abundant in the second year of...
  • 9
  • 322
  • 0
Báo cáo lâm nghiệp:

Báo cáo lâm nghiệp: "Comparison of general tree characteristics of less known oak species Quercus dalechampii Ten. and Quercus polycarpa Schur" pot

... were easily taken away from upper insolated parts of crowns of the previously measured trees. After that, diameters at each 1 m of length of each stem were measured. e first diameter was measured ... processed with statistical soft-ware Statistica 6.0. Means and standard deviations were calculated for each characteristic within each species. Normality of data distribution was tested by Shapiro-Wilk ... A delicate balance: Impacts of diseases and insects on the health of California oaks. Fremontia, 18: 58–63.TERHO M., HANTULA J., HALLAKSELA A. M., 2007. Occurrence and decay patterns of common...
  • 7
  • 400
  • 0
Báo cáo lâm nghiệp:

Báo cáo lâm nghiệp: " Comparison of deposition fluxes on the open area and in mountain spruce stands of different density" pdf

... stand the amount of throughfall was higher in comparison with the open area whereas in the sparse spruce stand the amount of throughfall was the same in comparison with the open area.Water ... and rainfall sums were the result of different leaf area index and stand density of the studied stands. Water intercepted by the stand canopy of the sparse stand was vaporized faster than in ... the winter season and in 14-day intervals in the other seasons. Samples were transferred to the laboratory and prepared for the analyses usu-ally the next day after the sampling. In winter...
  • 8
  • 446
  • 0
Báo cáo lâm nghiệp:

Báo cáo lâm nghiệp: " Comparison of three methods to determine optimal road spacing for forwarder-type logging operations" pdf

... loading and unload-ing cost considered in the forwarding model which shifts the total cost line upward.Fig. 1 shows that an increasing speed was associ-ated with increasing forwarding distance. ... road spacing. e sum of roading cost and travelling cost was also determined and plotted for different road spacings.e average road construction and maintenance cost in the study area were ... using forwarding time, travelling time and constant hourly machine cost regardless of the load or speed. en the sum of roading cost and forwarding cost was plotted as a function of road...
  • 9
  • 348
  • 0
Báo cáo lâm nghiệp:

Báo cáo lâm nghiệp: "Comparison of morphological and physiological parameters of the planting material of Norway spruce (Picea abies [L.] Karst.) from intensive nursery technologies with current bareroot plants" ppt

... above sea level). Height and diameter growth was investigated within two years after planting. e health status of plants was determined in two years after planting as defoliation index and ... weaker in plugs at the time of outplanting in 2004, equalized with that of bareroot plants within two years. e shoot height that was identical in both types of planting material at the time ... and older branches was determined. To evaluate the assimila-tory organs needle density and average weight of one needle were determined; the latter characteristic was assessed in each plant...
  • 7
  • 422
  • 0
Báo cáo lâm nghiệp:

Báo cáo lâm nghiệp: "Comparison of two types of ECOLURE lure on Ips typographus (L.) (Coleoptera: Scolytidae)" doc

... de-creased percentage of males at a high amount of trapped beetles in the case of ECOLURE CLASSIC. J and Š (2000) showed that a decrease in pheromone release to 50% led to a decrease in ... ECOLURE CLASSIC gradually decreases and that is why the value of the C/T index also decreases until the bag of ECOLURE CLASSIC is partly opened again. As the efficiency of ECOLURE TUBUS gradually ... basic tool of forest protection against this pest. In the last several de-cades pheromone traps have replaced trap trees in a massive way. e efficiency of pheromone traps as a measure of forest...
  • 5
  • 339
  • 0
Báo cáo lâm nghiệp:

Báo cáo lâm nghiệp: "Comparison of ecosystem C pools in three forests in Spain and Latin America" doc

... 39–48.[14] Garc a- Oliva F., Camou A. , Maass J.M., El clima de la RegiónCentral de la costa del Pacífico Mexicano, in: Noguera F .A. , VegaJ.H., Garc a- Aldrete A. N., Quesada M. (Eds.), Historia Natural ... of ecosystems, be-ing a general rule relating forest from Spain and Latin Amer-ica. The lack of this information in some regions constrains theunderstanding of global C dynamics. To help address ... biomass was done collecting all visi-ble roots in four plots from the first 20 cm soil depth; the extremevalues were eliminated and expressed as average of the raining and less raining periods of...
  • 5
  • 400
  • 0
Báo cáo lâm nghiệp:

Báo cáo lâm nghiệp: "Comparison of physical and mechanical properties of tension and opposite wood from ten tropical rainforest trees from different species" pptx

... pit apertures or io-dine crystals[6,24,32] were not successful in our case. Basedon another sampling for Eperua falcata, Laetia procera Eichl. and Simarouba amara, a specific analysis of MFA was ... m2.s−2), Crushing strength in bending and in compression (MPa), Tangential, radial and longitudinal shrinkage (%), tangential/radial shrinkage ratio (TS/RS) and transversal + radial shrinkage for opposite ... value of specific modulus of elasticity, (ii) a higher value of tangential and radial shrinkage, (iii) a lowvalue of longitudinal shrinkage, (iv) a higher value in tensilegrowth strains. Apart...
  • 8
  • 324
  • 0

Xem thêm

Từ khóa: Nghiên cứu sự biến đổi một số cytokin ở bệnh nhân xơ cứng bì hệ thốngBáo cáo quy trình mua hàng CT CP Công Nghệ NPVNghiên cứu tổ chức pha chế, đánh giá chất lượng thuốc tiêm truyền trong điều kiện dã ngoạiNghiên cứu tổ hợp chất chỉ điểm sinh học vWF, VCAM 1, MCP 1, d dimer trong chẩn đoán và tiên lượng nhồi máu não cấpMột số giải pháp nâng cao chất lượng streaming thích ứng video trên nền giao thức HTTPNghiên cứu vật liệu biến hóa (metamaterials) hấp thụ sóng điện tử ở vùng tần số THzđề thi thử THPTQG 2019 toán THPT chuyên thái bình lần 2 có lời giảiGiáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôitGiáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôitGiáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôitNGHIÊN CỨU CÔNG NGHỆ KẾT NỐI VÔ TUYẾN CỰ LY XA, CÔNG SUẤT THẤP LPWAN SLIDEPhối 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 thọNghiên cứu về mô hình thống kê học sâu và ứng dụng trong nhận dạng chữ viết tay hạn chếTìm hiểu công cụ đánh giá hệ thống đảm bảo an toàn hệ thống thông tinTổ chức và hoạt động của Phòng Tư pháp từ thực tiễn tỉnh Phú Thọ (Luận văn thạc sĩ)BT Tieng anh 6 UNIT 2Tăng trưởng tín dụng hộ sản xuất nông nghiệp tại Ngân hàng Nông nghiệp và Phát triển nông thôn Việt Nam chi nhánh tỉnh Bắc Giang (Luận văn thạc sĩ)BÀI HOÀN CHỈNH TỔNG QUAN VỀ MẠNG XÃ HỘIHIỆU QUẢ CỦA MÔ HÌNH XỬ LÝ BÙN HOẠT TÍNH BẰNG KIỀMTÁI CHẾ NHỰA VÀ QUẢN LÝ CHẤT THẢI Ở HOA KỲ