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|標題:||Vegetation Recovery after Fire of Subalpine Grassland on the East Peak of Mt. Shei|
the east peak of Mt. Shei
|摘要:||Fire is one of the most critical factors affecting plant growth and vegetation succession. This study established 10 plots on the east peak of Mt. Shei, which burned in 2001 and investigated the post-fire vegetation recovery of ＂Yushania niitakayamensis＂ grassland at four stages. A total of 43 vascular plant species were recorded at four stages with 27, 33, 32, and 33 species. The results revealed that after 6 months, most species of ＂Y. niitakayamensis＂ grassland occurred in the burned area, and the species diversity increased with the post-fire time. All of the species were perennial plants, among which 36.36% were evergreen plants and 63.64% were winter-withered plants. The coverage of the grassland was rehabilitated within approximately 2 years after the fire, whereas the recovery of the original height and appearance of the grassland required 3 years. A detrended correspondence analysis revealed that sequential changes in vegetation succession occurred after the fire. The composition of plant differences resulted from a decrease in species at an early stage after the fire and an increase in species at a later stage after the fire. The aboveground part of ＂Salix fulvopubescens＂ was burned after the grassland fire, and caespitosa shoots then sprouted from the surface. The saplings of ＂Abies kawakamii＂ were not resistant to fire, and the growth of adult A. kawakamii after the fire declined. At the marginal zone of fire, ＂A. kawakamii＂ saplings grew well. These phenomena confirmed that ＂Y. niitakayamensis＂ grasslands subject to periodic fire remain the grassland community, whereas grasslands transform into potential natural vegetation, an ＂A. kawakamii＂ forest, if no fire disturbance blocks succession.|
|Appears in Collections:||第37卷 第01期|
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