Destruction and Recovery of Vegetation Caused by the 2000-Year Eruption on Miyake-Jima Island, Japan
Destruction and Recovery of Vegetation Caused by the 2000-Year Eruption on Miyake-Jima Island, Japan
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DOI：
10.20965/jdr.2008.p0226
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发表时间：
2008-06-01
影响因子：
0.8
通讯作者：
Shimada, Kazunori
中科院分区：
文献类型：
--
作者：
Kamijo, Takashi;Kawagoe, Minami;Shimada, Kazunori
2000年，位于日本伊豆群岛三宅岛的山山活火山爆发，释放出大量含有高浓度二氧化硫的火山气体。岛上的生态系统被火山灰和气体严重破坏。我们详细介绍了2001年至2007年对11个永久样地进行的为期7年的研究中发现的植被破坏和恢复。2001年，火山灰对火山口附近植被的破坏最为严重。树木从2001年开始死亡，显然是由于火山气体排放的直接和/或间接影响。与树木的减少相反，Miscanthus consatus和Carex oshimensis两种草在喷发后显著增加，表明它们具有较高的SO2和酸性土壤耐受性。在2000年火山喷发前的初级演替早期，Miscanthus consatus和C. oshimensis不是优势种。在火山爆发后的植被恢复中，对SO2和酸性土壤的耐受性是植物物种在被破坏地点定居的必要条件。
The active Mt. Oyama volcano on Miyake-jima Island in the Izu Islands, Japan, erupted in 2000 followed by large amounts of volcanic gas containing high concentrations of SO2 has been emitted. The island ecosystem has been heavily damaged by the volcanic ash and gas. We detail the destruction and recovery of vegetation found in a 7-year study of 11 permanent plots from 2001 to 2007. Damage to vegetation by ash was worst near the crater in 2001. Trees began dying in 2001, apparently due to direct and/or indirect effects of volcanic gas emission. In contrast to the tree decline, two grass species, Miscanthus condensatus and Carex oshimensis, increased notably following the eruption, suggesting their high SO2 and acidic soil tolerance. Miscanthus condensatus and C. oshimensis were not dominant species in early stage of primary succession before the 2000-year eruption. In the vegetation recovery after the eruption, the tolerances to SO2 and acidic soils are necessary for plant species to colonize on devastated sites.