Earth Floor: Biomes Deciduous Forest The mid-latitude deciduous forest biome is located between the polar regions and the tropics. Because of its location, air masses from both the cold polar region and the warm tropical region contribute to the changes of climate in this biome. Photo © 2000-www.arttoday.com Mid-latitude deciduous forests have both a warm and a cold season (see climograph). "Deciduous" means to fall off, or shed, seasonally. Back | Next
Deciduous Forest Deciduous biomes are located primarily in the eastern half of the United States, Canada, Europe, parts of Russia, China, and Japan. Climate The average temperature of the forest is about 50 degrees F. Animals Precipitation in the temperate deciduous forest is spread throughout the year. More Pictures of Deciduous Forest Animals: Aspic Viper Cardinal Gray Squirrel Raccoon Vegetation In the deciduous forest there are many flowers like the passion berry and the blue lily. The Deciduous forest does not have much vegetation but there are many trees that contain outrageous amounts of flowers. More Pictures of Deciduous Forest Vegetation: Dog Wood Leaves Fringe Leaf Ginkgo Leaves Health Issues Despite decreasing financial support, the International Red Cross Federation has distributed 100 tons of barley seeds in 11 areas of the Democratic People's Republic of Korea (DPRK). Also in areas around us, Eugene/Springfield, Oregon, flooding has become a huge problem, and the Red Cross has helped the victims.
Dodgy logging: are Papua New Guinea's forests going the way of Indonesia's? “Don’t Californicate Oregon [or Arizona, Colorado, New Mexico, Washington, Montana etc]” was a popular slogan in the western United States during the 1960s and ‘70s. It was a repudiation of the mindless, haphazard development of land that had, by that time, already transformed southern California into “the world’s biggest strip mall”. A similar groundswell of sentiment now seems to be spreading across the jungles and villages of Papua New Guinea. The developmental demon in this case, however, is not California-style urban sprawl, but Indonesia-style forest exploitation. At issue is the widescale transfer of title to millions of hectares of densely forested land from customary local ownership to the state through a mechanism known as lease-leaseback. According to articles published in The Age on October 14 and 15 this year, more than 5 million hectares of forest – around 11% of the country – has been alienated via this mechanism so far.
How tall can a tree grow? - Valentin Hammoudi As explained in this lesson, at the base of the tree the phloem sap has delivered most of its sugar and is therefore quite watery. Just next to it, the xylem sap is rich in minerals, which were mostly absorbed by the roots. This unbalanced rate of water between phloem and xylem leads to water movement from the first one to the latter one, due to a phenomenon called osmosis. Unsurprisingly, a mirrored water exchange takes place at the top of the tree. Once it has delivered its nutrients and reached the tree’s top, the xylem sap is very watery, and by a similar osmotic movement, water goes from the xylem to the phloem enabling the production of new phloem sap. As water gets evaporated at the leaves, the pressure inside the xylem rises which creates the so-called follicular aspiration making the xylem sap move upwards. One of the additional characteristic of this circulatory system is its extreme low energy cost.
Temperate Deciduous Forest The Temperate Deciduous Forest The temperate deciduous forest occupies much of the middle of the Whittaker diagram, and to those of us who live here, it sure feels that way. Rapid changes from cold and dry to wet and warm or to any of the other corners of the climate envelope are often swift and dramatic. A favorite saying among the natives is "if you don't like the weather, wait a minute". As the diagram indicates, the average annual temperature ranges up to about 20 C down to freezing. Southern Ohio has a different feel to it. More on Forests - Forests in Europe Back UW - Brockman Memorial Tree Tour Dedication This tour is dedicated to the memory of Professor C. Frank Brockman (1902-1985), who capped an influential, productive career in forestry and outdoor recreation by producing in 1980 the original University of Washington tree tour. Edited by Louise M. Hastie, that eight-page publication featured 81 campus trees, and had to be reprinted by popular demand. Introduction About 480 different kinds of trees beautify the U.W. If you are using the print version of the Brockman Memorial Tree Tour, please see the addendum to the print booklet. Acknowledgements The C. Conceptual design: Suzanne Hellmuth and Jock Reynolds Tree tour text: Arthur Lee Jacobson and Carly Thornburg Editing: Sara Shores, Margaret Nailen, Seth Cowdery, Ellen Perry, Nora Strothman, Jessie Heasley, Linda Hanlon, Al Wagar, Ruth Thornburg, Dr. The C. These fine botanical resources and others exist on the UW campus due to the commitment of the University and the hard work of many generous volunteers. Works Cited
Black and white and REDD all over: a plan to save the world's forests The world has been fiddling while the forests burn, or are otherwise lost. One proposal to keep what’s left intact is REDD – essentially, paying countries to conserve their forest carbon stocks. REDD (Reducing Emissions from Deforestation and forest Degradation) has rocketed through the generally tortuous international climate change negotiations since it was proposed by the “Rainforest Nations” in 2005. It was also among the few points of agreement at the otherwise disappointing 2009 UN Copenhagen Climate Change Conference. REDD and its successor REDD+ (REDD plus measures to enhance forest carbon stocks) were given further momentum at the 2010 UN Cancun Climate Change Conference. In the meantime, Norway has been very active in promoting REDD-related activities, which have led to agreements with a number of tropical countries to stop deforestation. Why do we need REDD+? REDD+ is appealing for many reasons. Such an argument is hard to deny for a number of reasons.
Glossaire de terminologie foresti re Débardeur: Engin forestier automoteur à châssis articulé, utilisé pour les opérations de débardage. Skidder Index Déboisement : Défricher un terrain forestier pour l'utilisation à long-terme (autre que la foresterie). Index Dendrologie (forestière) : Étude et identification des arbres. Dérivé/composés phénoliques : Substances organiques très complexes qui se trouvent dans toutes les plantes en concentration, dosage et rapport divers. Désertification : Transformation de régions arides ou semi-arides autrefois productives en déserts par suite d’une sécheresse prolongée ou d’un mauvais aménagement à long terme des ressources aquatiques et terrestres. Développement durable des forêts : Développement des forêts en fonction des besoins actuels sans nuire à leur productivité future, à leur diversité écologique ou à leur capacité de régénération. Dioxide de carbone :(CO2 ) Gaz incolore, inodore et incom-bustible. Domaine vital : Exigences d'espace vital d'une espèce donnée.
Glossaire | Forêt Investissement Abroutissement(s) Dégâts sur les plantations, liés à la consommation des pousses d’arbres par le bétail ou le gibier. Accompagnement (ou bourrage) Végétation ligneuse introduite ou laissée autour d'une tige avec l’objectif de gainer celle-ci. N’ayant pas de but propre de production, elle sera rabattue pour ne pas gêner le plant par la suite. Accroissement Augmentation des dimensions et du volume des arbres. Accroissement courant en volume : Différence de volume entre deux années successives.Accroissement moyen du volume : Moyenne réalisée sur plusieurs années Accru naturel Peuplement forestier obtenu par la colonisation naturelle d’un terrain dont l’utilisation précédente a été abandonnée (déprise des terres agricoles). Affranchi Se dit d’un rejet de taillis ou d’un drageon qui, en grossissant, s’est suffisamment enraciné pour prendre son indépendance vis-à-vis de la souche-mère. Agroforesterie Amélioration (coupe d’amélioration) Aménagement forestier Amendement Andainage Arbre Arbre de place Assiette