In this article the use of the term secondary forest is restricted to forests which have reoccupied a site after clearance. The literature on tropical forest succession is reviewed, showing the importance of the type, intensity and scale
of the disturbance, the nature of the surrounding landscape and the composition of the surviving disperser fauna. The value of tropical secondary forests is compared to primary forest, with regards to regulatory function, commercial value and conservation
Comparison of income derived from harvesting timber vs. non-timber forest products in three different upland forests on the islands of Visayas, Luzon and Mindanao. Timber is by far the most valuable asset in each of the three cases examined. - (DWG)
The Russian forest sector: production, consumption, and export prospects
Consumption ; Economic potential ; Export ; Forest policy ; Forest resources ; Forestry ; Logging ; Production ; Russia ; Stand treatment ; Wood
This sector is described at the country level of detail, including a description of the growth of the forest resource over time and of the historical utilization of the forest resource, with a focus on the shares of output allocated for domestic
consumption and for export. The resource available for the future then is presented in terms of economic accessibility. Longer- term export opportunities are identified using a scenario analysis generated by the Russian Forest Sector Assessment Model.
Analysis and ground-truthing of repeat photography over three decades reveal how the relative percentages of paramo, forest, and agricultural land have changed. Decline in the extent of natural vegetation has been reversed. Chusquea bamboo has
Cogent article on an inclusive definition for mountain clouds forests, their importance in hydrology and biodiversity and a discussion of eight kinds of threats to their survival. Discussion of actions and research needs required to meet those
Deforestation and forest policy in the Lesser Himalayan Kumaun: impacts on peasant women and tribal populations
Colonial period ; Deforestation ; Environmental management ; Forest ; Forest policy ; Himalaya ; India ; Kumaon ; Land use ; Mountain ; Rural community ; UttarPradesh ; Woman
More than 5000 rural settlements in the Lesser Himalayan Kumaun of India have overexploited the forests, especially since Independence. The cast of characters in this drama played out today are peasant women, the Chipko movement, the timber mafia
Pedogenesis by clay dissolution on acid, low-grade metamorphic rocks under mediterranean forests in southern Tuscany (Italy)
Arid area ; Clay mineral ; Forest soil ; Grain size distribution ; Italy ; Mediterranean area ; Pedogenesis ; Soil properties ; Toscana
To that purpose 3 representative soil profiles on phyllite and sandstone under sclerophyllous oak, pine and heathland were selected. Without attempting a budget study for the entire forested area, the hypothesis that decomposing organic matter
Presettlement piedmont forests: patternsof composition and disturbance in central Georgia
Biogeography ; Drought ; Ecology ; Fire ; Forest ; Georgia (USA) ; Historical geography ; Human impact ; Land use ; Piedmont ; Soil erosion ; United States of America ; Vegetation dynamics
Reconstructing presettlement vegetation from land survey records permits an assessment of the environmental gradients that were most important in organizing forest composition and of the role of disturbance, natural or human, in this composition.
Agro-écological zonation along an altitudinal gradient in the montane belt of the Los Santos forest reserve in Costa Rica
Agroecosystem ; Altitudinal zonation ; Biogeography ; Costa Rica ; Forest ; Land use ; Mountain
Climate and human use define three major land-use zones in the montane oak forest of the Pacific slope of the Cordillera de Talamanca in Costa Rica. The fruit tree zone (2000 to 2300 m) is the most productive; the charcoal zone (2700-3000 m
Development of gullies under forest cover in the Taunus and crystalline Odenwald mountains, Germany
Agricultural practice ; Crystalline rocks ; Forest ; Germany ; Gully erosion ; Hessen ; Historical geography ; Land use ; Mountain ; Rill wash ; Slope
The study was concerned with conditions, under which Holocene gully systems could develop, which are nowadays under forest cover. The AA. study the impact of landuse or changes of the landuse on the development of these forms.
Large woody debris, physical process, and riparian forest development in montane river networks of the Pacific Northwest
Carrying capacity ; Channel geometry ; Drainage network ; Ecosystem ; Floodplain ; Forest ; Longitudinal section ; Model ; Mountain ; Oregon ; River bed ; Stream ; United States of America ; Vegetation dynamics
The AA. discuss the role of Large Woody Debris, LWD, in the development of montane riparian forests and present a conceptual model of this biogeomorphic process. Riparian forests are shown to be significant in the development of channel morphology
Deforestation ; Environmental conservation ; Forest ; Geographical information system ; Land tenure ; Land use ; Resource management ; Western Samoa
Land use surveys made in the mid-1950s, late 1980s and in 1990 are used to map the change in forest cover over almost four decades. Logging has not been the major cause of deforestation. The major process involved has been clearing for agricultural
use. Changes in land tenure, tending towards individual control are occurring. The rate of current forest clearance is a consequence of changing land tenure practice.
Log-jams perform an important role in the dynamics of channels and the mobility of particles. Thus, the AA. have conducted experiments in a forest ditch, using marked pebbles, with the object of determining the size of the material set in motion
The investigations on the Holocene river activities and slope dynamics in the Black Forest and Upper Rhine Lowlands were carried out with geomorphological mehods. They include the analysis of sediments, the radiocarbon dating of organic material
massifs forestiers.#This article describes some landscape principles in order to better integrate the main forest works in the natural environment. After an analysis of the forest perception by various types of users (desired landscape, various types
of views, sensitive areas), it deals with the main principles to be set up (scale respect, cancellation of geometrical limits, edges treatment) and even offers an improvement of the existing by valorization of forest massifs.
l'attractivité des peuplements forestiers pour les promeneurs. Il propose enfin des solutions pour une mise en valeur des massifs forestiers à partir des principes précédents.#This article deals with the problem of the forest landscape as seen from the inside
, based on studies performed in the Ile de France. It develops the legibility, penetrability and luminosity as basic elements that explain the forest attractive power to passers by. It finally offers solutions for a valorization of forest massifs using