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- Title
Carbon and nitrogen storages and allocation in tree layers of Fraxinus mandshurica and Larix gmelinii plantations.
- Authors
Mei Li; Zhang Zhuo-wen; Gu Jia-cun; Quan Xian-kui; Yang Li-jun; Huang Dong
- Abstract
By the methods of wood analysis and sequential soil core, the biomass and productivity of the tree layers in 20-year old Fraxiuns mandshurica and Larix gmelinii plantations, as well as the carbon (C) and nitrogen (N) storages in the above- and below-ground organs of the stands, were estimated. The biomass of F. mandshurica and L. gmelinii was 6815.10 g × m-2 and 9295.95 g × m-2, in which, stem occupied 57.32% and 58.01%, and fine roots occupied 2.67% and 1.80%, respectively. The annual productivity of F. mandshurica and L. gmelinii was 1618.16 and 2102.45 g × m-2× a-1, in which, stem accounted for 39.34% and 46.70%, and fine roots accounted for 12.06% and 5.25%, respectively. The C content in the organs of F. mandshurica was lower than that of L. gmelinii, while the N content was in adverse. The C storage of F. mandshurica was lower than that of L. gmelinii, while the N storage had no significant difference between the two tree species. The biomass, productivity, and C and N storages of aboveground organs were lower for F. mandshurica than for L. gmelinii, indicating the higher construction efficiency of the aboveground part of L. gmelinii. Due to the significant differences in the C and N contents between tree species and between the organs of same tree species, the measurement should be made on different tree species and different organs to have an accurate estimation of forest C and N storages.
- Subjects
WOOD; BIOMASS; AGRICULTURAL productivity; DAHURIAN larch; PLANTATIONS; CARBON in soils; NITROGEN in soils; PLANT roots; PLANT stems
- Publication
Chinese Journal of Applied Ecology / Yingyong Shengtai Xuebao, 2009, Vol 20, Issue 8, p1791
- ISSN
1001-9332
- Publication type
Article