Рубрики:
SWEDISH SCANDES
TREE-LINE
HEIGHT GROWTH
SYLVESTRIS
VEGETATION
IMPACTS
20TH-CENTURY
PERSPECTIVE
MOUNTAINS
RUSSIA
Кл.слова (ненормированные):
Climate change -- forest-tundra ecotone -- larch -- Siberian pine -- tree line
SWEDISH SCANDES
TREE-LINE
HEIGHT GROWTH
SYLVESTRIS
VEGETATION
IMPACTS
20TH-CENTURY
PERSPECTIVE
MOUNTAINS
RUSSIA
Кл.слова (ненормированные):
Climate change -- forest-tundra ecotone -- larch -- Siberian pine -- tree line
Аннотация: A warming climate provides competitive advantages to Siberian pine (Pinus sibirica Du Tour) in areas with sufficient precipitation. The warmer temperatures observed in central Siberia over the past three decades appear to have had a noticeable effect on growth of Siberian pine and larch (Larix sibirica Ledeb.) in the south Siberian Mountain forest-tundra ecotone. Larch is more tolerant of harsh climates and exhibits an arboreal growth form, whereas Siberian pine is in krummholz form. Larch also has an advantage at the upper tree limit and in areas with low precipitation. Since the mid-1980s there have been measurable increases in growth increments, stand densification, regeneration propagation into the alpine tundra and transformation of krummholz into arboreal forms. Warming winter temperatures have been sufficient for increased survival of regeneration. Regeneration responded to temperature increase of 1C by migration to areas 10-40 m higher in elevation. Regeneration has propagated into the alpine tundra at the rate of similar to 1.0-2.0 m year-1. Siberian pine and larch regeneration surpassed their upper historical limit by 10-80 m in elevation. While increased tree growth and migration into alpine tundra areas affect the regional carbon balance, it will also decrease albedo, which may increase warming at the regional level.
Полный текст,
WOS,
Scopus
Держатели документа:
[Kharuk, Viacheslav I.
Im, Sergey T.
Dvinskaya, Maria L.] VN Sukachev Inst Forest, Krasnoyarsk, Russia
[Ranson, Kenneth J.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA
Доп.точки доступа:
Kharuk, V.I.; Ranson, K.J.; Im, S.T.; Dvinskaya, M.L.; Terrestrial Ecology and Cryospheric Sciences Programs and Russian Fund for Fundamental Investigations [06-05-64939]