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

... assort- ments with the potential income possible to obtain An economic aspect of conversion of Scots pine (Pinus sylvestris L.) stands in the Polish Lowland A. W 1 , R. J 1 , G. R 1 , ... beginning has been fixed on the basis of the relation of the value of wood increment from the stands which need conversion to the value o...

Ngày tải lên: 07/08/2014, 03:22

... 210–218 JOURNAL OF FOREST SCIENCE, 57, 2011 (5): 210–218 Earthworms (Lumbricidae) of an air-polluted area aff ected by ameliorative liming E. K, L. M Faculty of Forestry and Wood Technology, ... carbon and nitrogen, exchangeable soil sorption and degree of base saturation of the sorption complex and avail- able nutrients P, Mg, Kand Ca) were determined for m...

Ngày tải lên: 07/08/2014, 10:21

... t in 1998/99 and 74.9 t in 2000/01 (DFO 2002). Of the total amount of asparagus exported from Nepal, the An estimation of willingness to pay for asparagus (Asparagus racemosus Willd.) collectors ... Pre-testing of questionnaire and its final set- ting. Before formulating the exact wording of the question, two meetings of collectors were organized...

Ngày tải lên: 07/08/2014, 10:21

... the undocumented 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 the species to survive ... efficiency of American chestnut seedlings increases in response to water stress regard- less of the environment under which the seedlings were grown. Thi...

Ngày tải lên: 07/08/2014, 16:20

... the best way to increase the preci- sion of BEFs would be the reduction in error of the biomass and volume models (Fig. 5). Examining the sensitivity in un- certainty of the BEF by ignoring the ... age-classes (reflecting the available format of source data) and as a single value and to analyse the associated BEF uncertainty for Norway spruce stands in...

Ngày tải lên: 07/08/2014, 16:20

... dependent on the initial vegetation type and on soil seed bank composi- tion. We therefore encourage additional experiments in differ- ent stand and soil types in order to establish the generality of these ... on the considered soil parameters. Both disc and rotary ploughing induced an overall lowering of soil nutrient index and soil compaction, but diffe...

Ngày tải lên: 07/08/2014, 16:20

... 355 c  INRA, EDP Sciences, 2007 DOI: 10.1051/forest:2007012 Original article Effect of single Quercus ilex trees upon spatial and seasonal changes in soil water content in dehesas of central western ... spring rainfall decreased soil water content quickly until June or July. Soil water content remained nearly constant during the rest of the...

Ngày tải lên: 07/08/2014, 16:21

... 10.1051/forest:2007036 Original article An integrated analysis of 33 Eucalyptus trials linking the onset of competition-induced tree growth suppression with management, physiographic and climatic factors Keith M. ... burning) and the interaction between these two factors were significantly related to the timing of tree growth suppression. Rega...

Ngày tải lên: 07/08/2014, 16:21

... 10.1051/forest:2007046 Original article Effect of an oil heat treatment on the leachability and biological resistance of boric acid impregnated wood* Florent Lyon a ** , Marie-France T hevenon b , Won-Joung Hwa n g c ,YujiImamura c ,JosephGril a , Antonio Pizzi d a Laboratory ... application of an oil layer of about 1.5 mm thick on tangential and radia...

Ngày tải lên: 07/08/2014, 16:21

... 10.1051/forest:2005030 Original article Ecophysiological responses of Mediterranean pines to simulated sea aerosol polluted with an anionic surfactant: prospects for biomonitoring Andrea RETTORI a,c , ... treatments with sea water including an anionic surfactant, 5 to 500 mg/L dioctyl sodium sulphosuccinate. Despite the reduction of surfactant in sea...

Ngày tải lên: 08/08/2014, 00:22

... the Leyte Cordillera: an indicator for species – site suitability in local reforestation programs Gerhard LANGENBERGER* Institute of Plant Production and Agroecology in the Tropics and Subtropics ... on the western side of the mountain range are actually typical species of the coastal plains which found their refuge in the rugged western foo...

Ngày tải lên: 08/08/2014, 00:22

... 10.1051/forest: 2002068 Original article Individual-tree growth and mortality models for Scots pine (Pinus sylvestris L.) in north-east Spain Marc Palahí a *, Timo Pukkala b , Jari Miina c and ... authors, on individual- tree growth models for Scots pine in Spain. Scots pine in Spain is a species of great economic, ecological and social impor-...

Ngày tải lên: 08/08/2014, 01:21

... C. Hoff and S. Rambal fall and leaf quantity [33, 43]. Important then are the timing of rainfall and drought events, the quantity of rainfall, the storage capacity of the soil and quantity and ... relations between the LAI and both climatic and soil factors; (2) understand how the water and carbon balances behave as a function of water availabilit...

Ngày tải lên: 08/08/2014, 01:21

... h i ). Stem lateral surface area (A) is calculated as the sum of each log lateral area and the lateral area of the cone formed by tree tip: . 2 wG ⋅= π () ii ii i hh GG v −⋅ + = + + 1 1 2 () ntree n n i i hh G vV ... dell'Appennino Pistoiese, in Atti del seminario funzionalità del sistema faggeta, Accademia Ita- liana di Scienze Forestali, 1995, pp. 309–318. [6] Carey E., Sala A....

Ngày tải lên: 08/08/2014, 01:22

... class="bi x0 y0 w2 h1 8" alt ="" conditions found in France and especially on the climatic diversity: oceanic, continen- tal and Mediterranean climates with their mountain variants. Pedunculate ... extension, or both. Two of these species are widespread in the hills and plains of the Atlantic and of the mid-European domains: Q petraea (s...

Ngày tải lên: 08/08/2014, 18:21