Snow Cover and Permafrost Soil Temperature Influence on the Radial Growth of Trees in Central Yakutia

Проведен анализ связи снежного покрова с температурным режимом мерзлотных почв и их влияние на радиальный прирост лиственницы Гмелина и сосны обыкновенной в Центральной Якутии. Высота снежного покрова и период его установления в предыдущем году определяет температурный режим почвогрунтов. Установлено, что при малой высоте снежного покрова происходит сильное промерзание грунтов в зимний период, что отрицательно сказывается на радиальном приросте деревьев в последующий год. Кроме предзимних характеристик снежного покрова на развитие лесной растительности большое влияние оказывают максимальная высота и время схода снежного покрова. Выявлены различия влияния снежного покрова на рост деревьев в различных почвогрунтовых и ландшафтно-географических условиях произрастания.Analysis of snow cover and permafrost soil temperature regime and their influence on the radial growth of trees in Central Yakutia were carried out. Snow depth and the period of its establishment in the previous year determines the intensity and rate of soil freezing and , as a result, the temperature regime of soil. It was founded that shallow snow depth leads to strong freezing of soils during winter, which affects the radial increment of trees in the subsequent year. Except of pre-winter snow cover characteristics, the maximum height and time of snow cover melting strongly affect the forest vegetation development of the study area. This study revealed differences in snow cover influence on the tree growth among different soils and landscape-geographical conditions

Snow Cover and Permafrost Soil Temperature Influence on the Radial Growth of Trees in Central Yakutia

Проведен анализ связи снежного покрова с температурным режимом мерзлотных почв и их влияние на радиальный прирост лиственницы Гмелина и сосны обыкновенной в Центральной Якутии. Высота снежного покрова и период его установления в предыдущем году определяет температурный режим почвогрунтов. Установлено, что при малой высоте снежного покрова происходит сильное промерзание грунтов в зимний период, что отрицательно сказывается на радиальном приросте деревьев в последующий год. Кроме предзимних характеристик снежного покрова на развитие лесной растительности большое влияние оказывают максимальная высота и время схода снежного покрова. Выявлены различия влияния снежного покрова на рост деревьев в различных почвогрунтовых и ландшафтно-географических условиях произрастания.Analysis of snow cover and permafrost soil temperature regime and their influence on the radial growth of trees in Central Yakutia were carried out. Snow depth and the period of its establishment in the previous year determines the intensity and rate of soil freezing and , as a result, the temperature regime of soil. It was founded that shallow snow depth leads to strong freezing of soils during winter, which affects the radial increment of trees in the subsequent year. Except of pre-winter snow cover characteristics, the maximum height and time of snow cover melting strongly affect the forest vegetation development of the study area. This study revealed differences in snow cover influence on the tree growth among different soils and landscape-geographical conditions

Technical Design Report for PANDA Electromagnetic Calorimeter (EMC)

This document presents the technical layout and the envisaged performance of the Electromagnetic Calorimeter (EMC) for the PANDA target spectrometer. The EMC has been designed to meet the physics goals of the PANDA experiment, which is being developed for the Facility for Antiproton and Ion Research (FAIR) at Darmstadt, Germany. The performance figures are based on extensive prototype tests and radiation hardness studies. The document shows that the EMC is ready for construction up to the front-end electronics interface

ILC Reference Design Report Volume 1 - Executive Summary

The International Linear Collider (ILC) is a 200-500 GeV center-of-mass high-luminosity linear electron-positron collider, based on 1.3 GHz superconducting radio-frequency (SCRF) accelerating cavities. The ILC has a total footprint of about 31 km and is designed for a peak luminosity of 2x10^34 cm^-2s^-1. This report is the Executive Summary (Volume I) of the four volume Reference Design Report. It gives an overview of the physics at the ILC, the accelerator design and value estimate, the detector concepts, and the next steps towards project realization.The International Linear Collider (ILC) is a 200-500 GeV center-of-mass high-luminosity linear electron-positron collider, based on 1.3 GHz superconducting radio-frequency (SCRF) accelerating cavities. The ILC has a total footprint of about 31 km and is designed for a peak luminosity of 2x10^34 cm^-2s^-1. This report is the Executive Summary (Volume I) of the four volume Reference Design Report. It gives an overview of the physics at the ILC, the accelerator design and value estimate, the detector concepts, and the next steps towards project realization