It has been suggested that airborne laser scanning (ALS) could be used for operational monitoring of vegetation changes in the alpine tree line caused by climate change. Because the vegetation is low in such tree-less areas close to the alpine zone, the accuracy of the digital terrain model (DTM) becomes crucial for early detection of, e.g., pioneer trees representing an ongoing tree migration ...

At high elevation or latitude, the margin of life-form tree is set by low temperature, with trees defined as upright woody species taller than 2–3 m. Globally, temperature limit occurs whenever growing season mean soil declines to 6.7 ± 0.8 °C. Disturbance and human land use, however, can cause be absent from climatic treeline. After addressing definitions concepts related treeline ecophysiolog...

background : data mining has an interdisciplinary field including various scientific disciplines such as: database systems, statistics, machine learning, artificial intelligence and the others. in the field of medical, data mining algorithms can help physicians to diagnose diseases and chose the best type of treatment. hepatocellular carcinoma has the most common type of liver cancer. given the...

Abstract Greater tree density and forest productivity at the tundra–taiga ecotone (TTE) are expected with climate warming, potential feedbacks to system. Yet, competition for nitrogen (N) may impact TTE dynamics. will likely increase N demand, while reducing supply through soil shading slower decomposition rates. We explored whether characteristics of roots root‐associated fungi important acqui...

Forest plantations mitigate environmental problems and favor lowcarbon economies, but the growing demand for wood is driving accelerated expansion of monocultures that are potentially harmful to biological diversity. In this research, compatibility between taxonomic diversity vascular plants timber production Pinus ponderosa was evaluated in stands with three levels canopy cover, located steppe...

Recent evidence from novel phytotron and free-air ozone (O3) fumigation experiments in Europe and America on forest tree species is highlighted in relation to previous chamber studies. Differences in O3 sensitivity between pioneer and climax species are examined and viewed for trees growing at the harsh alpine timberline ecotone. As O3 apparently counteracts positive effects of elevated CO2 and...