The effects of environmental pollution on Scots pine in the North taiga forests of Russia
Climate and atmospheric deposition studies in forests. International Conference
Applied ecology ; Ecosystem ; Environmental degradation ; European part of Russia ; Forest ; Kola Peninsula ; Pine ; Pollution ; Taiga ; Vegetation degradation
Peculiarities of the impact of permanent chronic air contamination by dust and gaseous waste of the copper-nickel industry on morphological structure of Scots pine crown in secondary north taiga forests of the Kola Peninsula were investigated
In 1990-1991, five Scots pine forest stands of IV-VI age classes belonging to the Vaccinium, Myrtillus, and Cladonia forest-site type were observed along the atmospheric pollution deposition gradient in Estonia. In 1992, two new sites were added
Carbon cycle ; Ecosystem ; Ecotone ; Forest ; Model ; Montana ; Primary production ; Snow ; Soil moisture ; Tree line ; Tundra ; United States of America
The purpose of this research is to evaluate the relative importance of selected processes (snow redistribution and winter dessication) important at the alpine treeline ecotone (ATE) using an existing physiologically mechanistic model, FOREST-BGC
. In this paper, FOREST-BGC is modified to incorporate these processes to model net primary productivity (NPP) and carbone balance for ATE sites in Glacier National Park, Montana.
Forest ; Grassland ; Holocene ; Human impact ; Kenya ; Mammal ; Palaeo-environment ; Quaternary ; Rift ; Taxonomy
An assemblage of micromammals, recovered from the Holocene levels of a rockshelter at 2400 m in the montane forest of the Mau Escarpment, were examined with the goal of testing and contributing to prior reconstructions of paleoenvironments
in the Central Rift Valley of Kenya. Species representation in the assemblage is consistent with a drying of the Rift Valley lakes in the middle Holocene and suggests a decrease in forest accompanied by expanding grasslands near the site. Changes in the abundance
Arctic Region ; Climatic variation ; Cold area ; Forest ; Glacial features ; Global change ; Greenhouse effect ; Human impact ; Ozone ; Pollution ; Stratosphere ; Tundra
topical environmental issues of public and scientific concern with the factual world. The A. studies the climatic trends and variability, snow, ice and periglacial activity, stratospheric ozone, plant cover-tundra and the boreal forest, pollution of air
Biogeography ; Colorado ; Conifer ; Dendrochronology ; Dendrology ; Forest ; Mortality ; Mountain ; Spatial variation ; United States of America
This study examines the use of dendrochronological crossdating to determine the dates of death of dead-standing coniferous trees in subalpine forests in the Colorado Rocky Mountains. The objectives were: to evaluate the feasibility of crossdating