George A. Petrides's A Field Guide to Trees and Shrubs: Northeastern and PDF

By George A. Petrides

ISBN-10: 039535370X

ISBN-13: 9780395353707

Детально охарактеризованы все дикорастущие деревья, кустарники и древесные лианы, обитающие к югу от Ньюфаундленда, к северу от Северной Каролины и Тенесси, к востоку от Дакоты и Канзаса. Охарактеризованы 646 вида, включая форму и расположение листьев, высоту, цвет, строение кроны, сезон цветения и плоды. Четкие рисунки показывают листья, цветы, силуэты деревьев и прочие характеристики.
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Additional info for A Field Guide to Trees and Shrubs: Northeastern and North-Central United States and Southeastern and South-Central Canada

Example text

For purposes of efficiency, sampling designs should accommodate variation in forest attributes and land use structure which suggests that the idea of a single design for a large region may not be relevant. The great variety in NFI sampling features makes simple summarisations difficult. The most common NFI features include systematic sampling components based on two-dimensional grids, although the grid spacing varies considerably. Increasingly, NFIs use permanent sample plots, although some countries, particularly in northern regions, use a combination of permanent and temporary plots.

Approximately 10–15 more peer-reviewed articles are in preparation (in 2009) for publication in a special issue of the journal, Forest Science. Articles, reports and presentations are noted on the COST Action E43 website (COST Action E43 2009), and a detailed list appears in the COST Action E43 Final Report (COST Action E43 2009). In addition to constructing reference definitions and developing bridging techniques, COST Action E43 solicited NFI reports from participating countries that include descriptions of inventory practices, sampling designs, and estimation methods and also basic forest resource estimates (NFI Reports section).

A specific motive for this work was that both EU and individual member states are parties to the UNFCCC and the KP. Further, the requirements for harmonised reporting will increase in the near future because of new LULUCF guidelines from IPCC for reporting under the UNFCCC and because complementary reporting on LULUCF activities under KP has been required since 2008. WG2 also adopted tasks that were similar to WG1 tasks 1–4 (Cienciala et al. 2008). Further, WG2 introduced general procedures for constructing bridges (Sta˚hl et al.

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A Field Guide to Trees and Shrubs: Northeastern and North-Central United States and Southeastern and South-Central Canada by George A. Petrides


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