naa a22 4500 51073782X CHVBK 20180411083017.0 cr unu---uuuuu 180411e20130901xx s 000 0 eng 10.1007/s11284-013-1067-4 doi (NATIONALLICENCE)springer-10.1007/s11284-013-1067-4 Carbon cycling and sequestration in a Japanese red pine ( Pinus densiflora ) forest on lava flow of Mt. Fuji [Elektronische Daten] [Toshiyuki Ohtsuka, Masaya Negishi, Kazuyuki Sugita, Yasuo Iimura, Mitsuru Hirota] Biometric-based carbon flux measurements were conducted in a pine forest on lava flow of Mt. Fuji, Japan, in order to estimate carbon cycling and sequestration. The forest consists mainly of Japanese red pine (Pinus densiflora) in a canopy layer and Japanese holly (Ilex pedunculosa) in a subtree layer. The lava remains exposed on the ground surface, and the soil on the lava flow is still immature with no mineral soil layer. The results showed that the net primary production (NPP) of the forest was 7.3±0.7tCha−1year−1, of which 1.4±0.4tCha−1year−1 was partitioned to biomass increment, 3.2±0.5tCha−1year−1 to above-ground fine litter production, 1.9tCha−1year−1 to fine root production, and 0.8±0.2tCha−1year−1 to coarse woody debris. The total amount of annual soil surface CO2 efflux was estimated as 6.1±2.9tCha−1year−1, using a closed chamber method. The estimated decomposition rate of soil organic matter, which subtracted annual root respiration from soil respiration, was 4.2±3.1tCha−1year−1. Biometric-based net ecosystem production (NEP) in the pine forest was estimated at 2.9±3.2tCha−1year−1, with high uncertainty due mainly to the model estimation error of annual soil respiration and root respiration. The sequestered carbon being allocated in roughly equal amounts to living biomass (1.4tCha−1year−1) and the non-living C pool (1.5tCha−1year−1). Our estimate of biometric-based NEP was 25% lower than the eddy covariance-based NEP in this pine forest, due partly to the underestimation of NPP and difficulty of estimation of soil and root respiration in the pine forest on lava flows that have large heterogeneity of soil depth. However, our results indicate that the mature pine forest acted as a significant carbon sink even when established on lava flow with low nutrient content in immature soils, and that sequestration strength, both in biomass and in soil organic matter, is large. The Ecological Society of Japan, 2013 Carbon cycling nationallicence Net ecosystem production nationallicence Net primary production nationallicence Pinus densiflora nationallicence Soil respiration nationallicence Ohtsuka Toshiyuki Institute for Basin Ecosystem Studies, Gifu University, 1-1 Yanagito, 501-1193, Gifu, Japan aut Negishi Masaya Laboratory of Ecology, Faculty of Science, Ibaraki University, 2-1-1 Bunkyo, 310-8512, Mito, Ibaraki, Japan aut Sugita Kazuyuki Laboratory of Ecology, Faculty of Science, Ibaraki University, 2-1-1 Bunkyo, 310-8512, Mito, Ibaraki, Japan aut Iimura Yasuo Institute for Basin Ecosystem Studies, Gifu University, 1-1 Yanagito, 501-1193, Gifu, Japan aut Hirota Mitsuru Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Ten-nodai, 305-8572, Tsukuba, Ibaraki, Japan aut Ecological Research Springer Japan 28/5(2013-09-01), 855-867 0912-3814 28:5<855 2013 28 11284 https://doi.org/10.1007/s11284-013-1067-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11284-013-1067-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ohtsuka Toshiyuki Institute for Basin Ecosystem Studies, Gifu University, 1-1 Yanagito, 501-1193, Gifu, Japan aut NATIONALLICENCE 700 1- Negishi Masaya Laboratory of Ecology, Faculty of Science, Ibaraki University, 2-1-1 Bunkyo, 310-8512, Mito, Ibaraki, Japan aut NATIONALLICENCE 700 1- Sugita Kazuyuki Laboratory of Ecology, Faculty of Science, Ibaraki University, 2-1-1 Bunkyo, 310-8512, Mito, Ibaraki, Japan aut NATIONALLICENCE 700 1- Iimura Yasuo Institute for Basin Ecosystem Studies, Gifu University, 1-1 Yanagito, 501-1193, Gifu, Japan aut NATIONALLICENCE 700 1- Hirota Mitsuru Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Ten-nodai, 305-8572, Tsukuba, Ibaraki, Japan aut NATIONALLICENCE 773 0- Ecological Research Springer Japan 28/5(2013-09-01), 855-867 0912-3814 28:5<855 2013 28 11284 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer