By George A. Petrides
Этот иллюстрированный определитель включает детальные описания 387 видов, объединенных в 6 групп по внешнему сходству. forty seven цветных вкладок и текстовые описания характеризуют особенности видов, необходимые для идентификации. Цветные фотографии и 295 карт распространения дополняют видовые описания.
Доп. информация: Файл является рипом с сайта Google Books. Этим определяется отсутствие некоторых страниц (до 20% от общего числа) и невысокое разрешение сканирования (около a hundred dpi). Образцы страниц
Мои раздачи биологических определителей, справочников, учебных пособий и монографийБудьте добры, нажмите на кнопку Сказать "Спасибо"!
Read or Download A Field Guide to Western Trees: Western United States and Canada PDF
Similar trees books
It is a concise and complete overview of the biology, ecology, and administration of Norway spruce. Written by means of 25 specialists within the box, and richly illustrated, it integrates vintage and modern literature. greater than 2000 works are brought up within the textual content, which highlights easy examine and forestry practices in valuable and japanese Europe.
There's a turning out to be curiosity and want for boosting financial and coverage examine in agroforestry. to this point, no unmarried reference booklet presents enough assurance of utilized fiscal and coverage research methodologies for agroforestry execs. This publication, written by means of the top specialists in economics and agroforestry, addresses this desire with 14 case stories (covering the entire continents of the area) that describe and exhibit the applying of a variety of leading edge fiscal research thoughts to agroforestry process, guidelines and initiatives.
In its early days, agroforestry could have been considered because the area of the landcare fanatic. this present day, integrating bushes and shrubs into efficient farming structures is visible as a center precept of sustainable agriculture. Agroforestry for traditional source administration presents the basis for an knowing of agroforestry perform in either low and high rainfall zones throughout Australia.
This quantity compiles the result of long term observations of web site homes and environment procedures for 3 beech forests. Representing a spectrum of universal beech woodland websites in vital Europe, they obtain related atmospheric inputs and are becoming below comparable weather conditions, yet fluctuate of their soil acidity.
- The Tree Habit in Land Plants A Functional Comparison of Trunk Constructions with a Brief Introduction into the Biomechanics of Trees
- Nonlinear Dynamics and Chaos in Agricultural Systems
- Introduction to Plant Diseases: Identification and Management
- GATT Negotiations and the Political Economy of Policy Reform
- Soil Ecology
- Food spoilage microorganisms
Additional info for A Field Guide to Western Trees: Western United States and Canada
Leaves basal, alternate, or opposite, rarely whorled, simple. Flowers unisexual or bisexual, sepals 4–5, fused at base, petals mostly 5-lobed, rarely 4, fused, often snapdragon-like, stamens 2 or 4, sterile stamens 0–2, ovary superior. Fruit are capsules. Herbaceous annuals, perennials, subshrubs, and shrubs. Page 330. platanaceae—sycamore family. Leaves alternate, simple, lobed. Bark peeling in patches, giving trunk a mottled appearance. Flowers unisexual, both sexes on same plant, small, in round heads.
Trees and shrubs, rarely herbaceous. Page 214. linnaeaceae—twinflower family. Leaves opposite, mostly simple. Flowers bisexual, funnel-shaped or snapdragon-like, sepal lobes mostly 5, petal lobes 5, stamens 4, attached at two di=erent levels, ovary inferior. Fruit, capsules or achenes. Subshrubs, shrubs, and small trees. Page 328. malvaceae—mallow family. Leaves alternate, simple, often lobed and somewhat maple-like. Flowers bowl-shaped, sepals and petals 5, stamens 5 to many, 52 p l a n t fa mil ie s fused at base forming a tube, ovary superior.
Similar species grow at higher elevations in northern California than in southern British Columbia. Subalpine. A short growing season and ample precipitation, mostly in the form of winter snow, characterize this habitat found at the upper limits of tree growth. The forest here is dominated by subalpine fir, Engelmann spruce, and mountain hemlock, with deciduous larches also found near and east of the Cascade crest. Craggy whitebark pines are sometimes found on drier or harsher sites. Open meadows, both wet and dry, are interspersed with rocky outcrops and pockets of forest.