Structural dynamics of a Southwestern pine forest under chronic human influence
Climatic variation ; Forest ; Human impact ; Land use ; Landscape ; Natural park ; New Mexico ; Pine ; United States ; Vegetation ; Vegetation dynamics
The paper examines the impact of several synchronous disturbances, both natural and anthropogenic on the development of the Navajo ponderosa pine forest in the Chuska Mountains of the American Southwest during the fast several hundred years
. The specific objective is to determine the relative importance of historical factors, grazing, fire regime alteration, as well as climate fluctuations, in changing the forest pattern.
Canopy ; Climatology ; Deciduous forest ; Desert ; Forest ; Model ; Radiation ; United States ; Vegetation
A model of radiation transfer in plant canopies is used to predict vegetation albedos. The model is described and the results of simulations for three representative canopy types (tropical rainforest, Sonoran desert and mid-latitude deciduous forest
and economic status dominated the decision-making, even though it was the women and poor who depended on the forests for their fuelwood and fodder products. - (DWG)
Forest decline in Southern Belgium and in Luxembourg is unevenly distributed. Mapped soil/lithological characteristics could not explain health patterns of the stands. Soil and foliar analyses provided valuable data related with forest decline
Spatial and temporal variations in temperate forest soil carbon dioxide during the non-growing season
In 1985-86 a study was undertaken in a temperate forest in north Georgia to examine spatial and temporal variations in soil CO2 and the factors that might be responsible for the observed patterns. Variations in soil CO2 with depth and the influence
New developments in techniques for measuring soil erosion in burned and unburned forested catchments, Portugal
Catchment area;Watershed ; Fire ; Forest ; Portugal ; Soil erosion ; Water quality
This paper concerns the description and preliminary results from two complementary techniques developed for measuring soil erosion under different land uses in a study of forest fire impact on soil erosion and water quality in the Agueda basin
Forest harvesting geomorphic effects in a submediterranean granitic middle mountain. Mont Lozère, South of the Massif Central, France. First results
Here are the very first results attesting the evidence of removal after forest harvesting operations, both by erosion and sedimentation, yet without exportation out of the catchment.