Báo cáo lâm nghiệp: " Site quality equations for Pinus sylvestris L plantations in Galicia (northwestern Spain)" ppt

... 10.1051/forest:2005006 Original article Site quality equations for Pinus sylvestris L. plantations in Galicia (northwestern Spain) Ulises DIÉGUEZ-ARANDA*, Juan Gabriel ÁLVAREZ GONZÁLEZ, Marcos ... et al. Site quality associated with Scots pine (Pinus sylvestris L. ) in Spain has been studied by several authors. The earliest site index curves were constructed...

Ngày tải lên: 08/08/2014, 00:21

... Scots pine (Pinus sylvestris L. ) in north- east Spain, Ann. For. Sci. 60 (2003) 1–10. [21] Palahí M., Tomé M., Pukkala T., Trasobares A., Montero G., Site Index model for Scots pine (Pinus sylvestris ... thinning for the other thinnings; remaining basal area. For the final cutting: years since the last thinning to the first regen- erative cut. Figure 2 shows the simulation...

Ngày tải lên: 08/08/2014, 00:22

... still incomplete and unstrengthened. In July, the incubation period needed for iso- lation of cuticles is about 7 d (20% pec- tinase, 2% cellulase) and these were used for ... also micro- graphed. The needles of pine or spruce seedlings have less cutinized cells and the isolation of cuticle is easier than from adult trees. The needles in a...

Ngày tải lên: 09/08/2014, 04:20

... model applicable to all the sites in this study. Restricting the list of equations to only one pre- selected model (for example, any of models (2)–(4)) could have resulted in a need to include ... Bailey R .L. , Compatible volume-taper models for loblolly and slash pine based on a system with segmen- ted-stem form factors, For. Sci. 46 (2000) 1–12. [5] Flewelling J.W., Raynes L. M....

Ngày tải lên: 08/08/2014, 01:22

... unthinned loblolly pine plantations, Va. Polytech. Inst. State Univ. Sch. For. Wildl. Resour. Report No. 82, 1995. [5] Avila O.B., Burkhart H.E., Modeling survival of loblolly pine trees in thinned ... and Diéguez-Aranda et al. [40] in the development of forest growth models, mainly for plantations. Radiatapine (Pinus radiata D. Don) is well represented in the north of Spain, esp...

Ngày tải lên: 07/08/2014, 16:21

... In the ma- nual terraces, the refuse was only incorporated into the planting holes using a shovel. In November 1992, 80 P halepensis seedlings were planted in each plot. ... Original article Survival and growth of Pinus halepensis Miller seedlings in a semi-arid environment after forest soil transfer, terracing and organic amendments A Roldán,...

Ngày tải lên: 08/08/2014, 18:21

... plus, ses glands petits et difficiles à conserver devaient être peu prisés par le forestier.

Ngày tải lên: 09/08/2014, 06:22

... multiplicative error in raw data and the “intrinsically nonlinear” type with an additive ran- dom error. In the “intrinsically linear” model, the original data are log-transformed and the least ... reviewed and compared the log-transformed linear model with the simple nonlinear form and pointed out that the latter model resulted in better fit for two datasets of Betula alleghaniensis...

Ngày tải lên: 08/08/2014, 01:21

... same ecological variables could be merged with- out altering the discrimination of vegetation types. Ecological amplitude of plant species Following Chessel et al (1982) for CA ... approximately the same species (see fig 2); the ecological amplitude of Milium effusum is therefore limited. Viola riviniana is present mostly on eumull and rarely on ol...

Ngày tải lên: 08/08/2014, 18:21

... s Soil-Chamber contact Collar Collar Inserted / Collar Inserted / Collar Collar Collar 2.4. In situ comparisons Four campaigns of soil respiration measurements took place at the Vielsalm (May 2003), Chaux ... direct insertion of a chamber into the soil poten- tially disturbs the litter-soil layer at a short-term (within 24 h) and does not allow multiple measurements in the same loca- tion...

Ngày tải lên: 07/08/2014, 16:20