Đang chuẩn bị liên kết để tải về tài liệu:
Báo cáo lâm nghiệp: "Effect of contrasting water supply on the diameter growth of Norway spruce and aspen in mixed stands: a case study from the southern Russian taiga"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp Original article đề tài: "Effect of contrasting water supply on the diameter growth of Norway spruce and aspen in mixed stands: a case study from the southern Russian taiga" | Ann. For. Sci. 62 2005 807-816 INRA EDP Sciences 2005 DOI 10.1051 forest 2005086 807 Original article Effect of contrasting water supply on the diameter growth of Norway spruce and aspen in mixed stands a case study from the southern Russian taiga Fyodor TATARINOVa b c Yury BOCHKAREVd Alexander OLTCHEVa e Nadezhda NADEZHDINAb Jan CERMAKb a Institute of Ecology and Evolution Leninsky prospekt 33 Moscow Russia b Institute of Forest Ecology Mendel University of Agriculture and Forestry Brno Czech Republic c Present address Institute of Forest Ecosystem Research IFER 1544 Jilove u Prahy 254 01 Czech Republic d Faculty of Geography Lomonosov Moscow State University Russia e Institute of Bioclimatology Georg-August University Goettingen Germany Received 21 June 2004 accepted 27 May 2005 Abstract - Stem radial growth of Norway spruce Picea abies L. Karst. aspen Populus tremula L. birch Betula alba L. alder Alnus incana L. Moench and mountain ash Sorbus aucuparia L. was measured in an unmanaged mixed uneven-aged tree stand in the southern taiga of European Russia by band dendrometers during the growing seasons of 2000-2001. In addition woody cores were taken from sample spruce and aspen trees using increment borers for dendrochronological analysis. Analysis of the tree rings was made for period from 1999 to 2002 the period while daily meteorological data were available. Spruce and aspen represented 40 and 44 of the entire stand basal area respectively. However basal area has grown over 60 of the total in spruce and less than 15 in aspen for each year during the period of 19992002. These results indicate the transformation processes of secondary aspen-spruce stands of the Southern European Taiga into a mixed spruceaspen-birch stands. The most intensive radial growth of the spruce trees was observed in 2000 with high over-watering conditions in summer whereas the highest radial growth in aspen was observed during the extremely dry growing season of 2002. The basal area .