Les épicéas et autres résineux des forêts de l’Orne, sont attaqués par des insectes. Privés d’eau, à cause de la sécheresse, ils n’ont pas assez de résine pour se défendre et doivent être détruits. La crainte de Jean Jamin, de l’Office national des forêts, c’est qu’un jour, « il n’y aura plus d’arbres malades parce qu’il n’y aura plus d’arbres ».
Guy Leclerc, membre de l'association "Nature et avenir", explique comment la pollution de l'air, provenant de la zone industrielle de Rouen, détruit la forêt normande. Comme "sauver la nature, c'est à dire sauver l'arbre, c'est sauver l'homme", il appelle tous les gens conscients de ce grave problème à participer aux actions de son association.
The forest is presented as the first victim of the presence of man. Responsible for intense clearing, to cultivate, build or raise livestock, it threatens a natural balance that is essential to it. Its destructive activity accelerates soil erosion and transforms the land that must feed it into deserts.
La pratique de la coupe rase, qui consiste à abattre tous les arbres d'une parcelle, se développe dans les forêts françaises. Pour les exploitants, comme Stéphane Latour, directeur de Fibois, et Lionel Say, de la coopérative forestière Bourgogne Limousin, il s'agit de créer des ouvertures, vitales pour la croissance des arbres, et de replanter des espèces commercialisables. Mais Bruno Doucet, de l'association de défense de la nature « Canopée », dénonce les dégâts causés sur la biodiversité.
In the forests of Oregon, in the northwest of the United States, Mr.Merril, 50 years old, is a forestry engineer for a private company and supervises the felling of century-old sequoias. Interviewed, he talks about his profession and the respect he has for these trees that he considers as living beings.
Report about the poaching of sequoias in the United States, it threatens these giant trees of the forests of California, the poachers amputate them with their magnifying glass, an outgrowth on the trunk used for reproduction. A commentary on factual images and illustrations alternates with the explanations of Jeff DENNY ranger at the "Redwood National Park", the comments of a merchant who sells wooden furniture and objects
A Bialowieza, en Pologne, existe encore une forêt primaire. C'est une réserve naturelle qui ne se visite qu'accompagné par un guide du parc. Elle a été reconnue en 1977 par l'UNESCO, réserve de la biosphère. Reportage à l'entrée du parc.
Le botaniste Jean-Jacques de Granville décrit les grandes caractéristiques de la forêt guyanaise, notamment la compétition fabuleuse entre arbrisseaux, lianes et plantes épiphytes pour atteindre la lumière.
In Japan, a land of megacities but also of sacred trees, Buddhists, Shintoists, animists, all consider the tree to be endowed with incredible powers. Report on a group going for a forest bath not far from Tokyo accompanied by SHIGUEMI Saito, guide of "forest therapy", which explains the interest of these days. This plant environment contains phytoncides, they are molecules that emanate from leaves and trees, these invisible particles are able to strengthen our immune defences.
In Japan, a land of megacities but also of sacred trees, Buddhists, Shinto-ists, animists, all consider the tree to be endowed with incredible powers. At the Center for Environmental, Health and Earth Sciences at the University of Chiba, Professor MIYAZAKI Yoshifumi has been researching for 25 years what trees contribute to our health, In particular, how the nerves and brain react to simple hints of the forest. We follow the experience of a student who looks at a forest or breathes the natural scent of crushed tree leaves and has had electrodes placed on her forehead. Professor MIYAZAKI Yoshifumi explains why modern life generates stress and how to calm down, he developed the "Forest Therapy" to relieve urban dwellers. We follow a group leaving for a forest bath not far from Tokyo accompanied by SHIGUEMI Saito (guide of "Forest Therapy") which explains the interest of these days. This plant environment contains phytoncides, they are molecules that emanate from leaves and trees, these invisible particles are able to strengthen our immune defences. In the heart of the forest, very close to a temple, hikers engage in one last ritual, that of embracing the trees to feel his energies. Hikers express how they feel.
A mission was sent to the Democratic Republic of the Congo to protect the world’s second largest rainforest from deforestation. This report consists of factual images that alternate with interviews with José ENDUNDO BONONGE, Minister of the Environment of the Democratic Republic of the Congo, and Jean-Louis BORLOO, Minister of Ecology.
Tree smuggling has developed between Russia and China on the border between the two countries. The wood of the Russian taiga is very precious to the Chinese. Its cut is very regulated in Russia. Russian police patrol regularly in search of clandestine cuts.
Peter WOHLLEBEN, forestry engineer in Hummel, Germany, explains how trees, together form a small company with families, friends, and how they communicate with each other through a network of fungi, especially to inform themselves of the arrival of predators.