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Full-Text Articles in Nature and Society Relations

Recruitment Of Larix Sibirica Ledeb. In Closed Forest Stands, On Clear-Felling Sites And At Fire-Sites In The Forests Of Mongolia, Vasiliy T. Yarmishko, Nikolay N. Slemnev Jan 2012

Recruitment Of Larix Sibirica Ledeb. In Closed Forest Stands, On Clear-Felling Sites And At Fire-Sites In The Forests Of Mongolia, Vasiliy T. Yarmishko, Nikolay N. Slemnev

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

The paper deals with recruitment patterns in larch forests of Mongolia following anthropogenic impacts (felling, fires), and describes successional trends in highland forest communities. It is established that mass seed recruitment of Larix sibirica Ledeb. took place during anomalous combinations of hydrothermal conditions supposedly occurring at periods of about 100 years. During the last decades, frequent fires of various intensities put serious constraints on reforestation of the larch, and induced successional trends in disturbed forests.


Magnitude And Structure Of Lymantria Dispar Asiatica Infestations Of Common Forest Steppe Tree Species In Northern Mongolia, Nina Tiralla, Kai Füldner, Stefan Schütz Jan 2012

Magnitude And Structure Of Lymantria Dispar Asiatica Infestations Of Common Forest Steppe Tree Species In Northern Mongolia, Nina Tiralla, Kai Füldner, Stefan Schütz

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

Lymantria dispar L. is one of the most serious forest pests worldwide by infesting large forest areas involving massive tree dieback. Unlike outbreaks of Lymantria dispar L. in Germany that cause massive defoliation, observations of outbreaks of Lymantria dispar asiatica made in the research area Khonin Nuga, West Khentii, Mongolia during the past six years showed only punctual defoliation, and dieback was extremely scarce. However, information on the performance of Lymantria dispar asiatica and the corresponding reaction of host tree species in Khonin Nuga is rare. Therefore, this study concentrates on the examination of primarily affected tree species and the ...


Opposing Growth Trends Created By External Disturbances In Larch Forests Of The Mongolian Altai, Choimaa Dulamsuren, Mookhoor Khishigjargal Jan 2012

Opposing Growth Trends Created By External Disturbances In Larch Forests Of The Mongolian Altai, Choimaa Dulamsuren, Mookhoor Khishigjargal

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

If tree-ring series from different trees are merged to a chronology, in order to for example make inferences on climate, these series must be checked for consistency. Statistical parameters, including the Gleichläufigkeit (GL = coefficient of agreement) and standard t value have been applied for this purpose and are usually combined to boost the informative value. We tested the hypothesis that low GL and t values can, in turn, be used as indicators of external disturbance in a case study in forests of Siberian larch (Larix sibirica) in the Mongolian Altai. Since these forests were known to have been subjected to ...