当前位置: X-MOL 学术Landscape Ecol. Eng. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Dynamics of an old evergreen coppice in southwestern Japan with special focus on a typical coppice species ( Castanopsis cuspidata ) and a climax species ( Distylium racemosum )
Landscape and Ecological Engineering ( IF 1.7 ) Pub Date : 2019-02-15 , DOI: 10.1007/s11355-019-00371-0
Tomohiro Hirayama , Satoshi Ito , Hiromi Yamagawa , Ryoko Hirata , Yasushi Mitsuda

We investigated stand dynamics of an abandoned evergreen coppice (c.a. 100 years old) over the course of 21 years in south Kyushu, Japan. The study stand showed a change in species composition from being dominated by Castanopsis cuspidata to Distylium racemosum, that is, from a typical coppice species to a typical climax species of the region. However, the relative dominance of Castanopsis spp. appeared to remain very high in the study stand compared to that in the Aya Research Site, a typical old-growth forest in the region, due to abundant C. cuspidata canopy trees of coppice origin. This suggests that the species composition of the study stand remained distinct from that of climax forests in the region. On the other hand, D. racemosum did not show a significant change in diameter at breast height (DBH) class frequency distribution from 1996 to 2017, probably due to the slow growth of this species. However, generalized linear models (GLMs) were used to identify the factors affecting better DBH growth of this species in the gap, indicating the potential for further development of the population structure when small trees are released from suppression of canopy trees. This suggests, inversely, that the development of the D. racemosum population was heavily suppressed by abundant C. cuspidata canopy trees of coppice origin that survived to the age of nearly 100 years. Further, large typhoons are suggested to cause severe canopy disturbances that remove canopy trees of C. cuspidata, which might be important for promoting further forest succession, even for a nearly 100-year-old evergreen old coppice.

中文翻译:

日本西南部一个常绿灌木林的动力学,特别关注典型的灌木林(Castanpsis cuspidata)和高潮物种(Distylium racemosum)

我们调查了日本九州南部21年内被遗弃的常绿灌木林(大约100年)的林分动态。研究立场表明,物种组成从以锥栗(Castanopsis cuspidata)为主到种间蝇(Distylium racemosum),即该地区典型的小灌木林物种转变为典型的高潮物种。但是,Cast树的相对优势。与该地区典型的老树森林Aya Research Site相比,该研究台上似乎仍然保持很高的水平,这归因于丰富的矮牵牛C. cuspidata冠层树。这表明该研究林的物种组成与该地区的高潮森林的物种组成仍然不同。另一方面,D.蔓并未出现胸径(胸径)级频率分布1996至2017年一显著的变化,可能是由于该物种的生长缓慢。但是,使用广义线性模型(GLM)来识别影响该物种在间隙中更好生长的DBH的因素,表明当抑制树冠释放小树时,种群结构有进一步发展的潜力。相反,这表明,D.racemosum种群的发展被存活到将近100年的丰富的矮牵牛产的C. cuspidata冠层乔木严重地抑制了。此外,建议使用大台风引起严重的树冠干扰,从而去除虎杖的冠层树,即使对于已经有近100年历史的常绿灌木林,这对于进一步促进森林演替也可能很重要。
更新日期:2019-02-15
down
wechat
bug