TAILIEUCHUNG - Báo cáo khoa học: "Soil nitrogen mineralization in adjacent stands of larch, pine and oak in central Korea"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế đề tài: "Soil nitrogen mineralization in adjacent stands of larch, pine and oak in central Korea. | Ann Sei For 1997 54 1-8 Elsevier INRA 1 Original article Soil nitrogen mineralization in adjacent stands of larch pine and oak in central Korea Y Son IK Lee Department of Forest Resources Korea Universits. Seoul 136-701 Korea Received 3 January 1996 accepted 23 May 1996 Summary - To examine the effects of tree species on soil nitrogen N mineralization we monitored rates of soil nitrogen mineralization and nitrification using the buried bag incubation method in 37-year-old Japanese larch Larix leptolepis Gordon pitch pine Pinus rigida Mill and oak Quercus serrata Thunb stands on a similar soil in central Korea. Litter and mineral soil 0-15 cm were incubated for 45 day intervals from I September 1994 to 31 August 1995. Mean daily N mineralization rates were significantly different among sampling dates and the tree species. Annual net N mineralization and nitrification were also significantly different among the tree species the annual N mineralization being 44 kg ha year for p rigida 92 for L leptolepis and 112 for Q serrata and percent nitrification ranging from 45 for p rigida to 90 for L leptolepis. Litterfall N inputs seemed to influence soil N mineralization. This study indicates that under a similar environment and soil type N mineralization may differ by several-fold under the influence of different species. larch central Korea oak pine soil N mineralization Resume - Mineralisation de I azote du sol dans des peuplements adjacents de meleze pin et chêne en Corée centrale. Afin d examiner les effets de trois espèces forestieres sur la mineralisation de I azote du sol nous avons mesuré la Vitesse de mineralisation de I azote et de la nitrification dans les sols par la technique des sacs in situ dans des peuplements de meleze du Japon Larix leptolepis Gordon de pitchpin Finns rigida Mill et de chêne Quercus serrata Thunb âgés de 37 ans Ct silués stir des sols similaires de Corée centrale. Litière Ct sol mineral 0 15 cm ont cté incubés pendant des périodes de 45 .

• Báo cáo khoa học
• Báo cáo lâm nghiệp hay
• cách trình bày báo cáo
• báo cáo lâm nghiệp
• công trình nghiên cứu lâm nghiệp
• tài liệu về lâm nghiệp