Wind protection rather than soil water availability contributes to the restriction of high-mountain forest to ravines
Wind protection rather than soil water availability contributes to the restriction of high-mountain forest to ravines
复制标题
防风而不是土壤水分的可用性导致高山森林对峡谷的限制
DOI：
10.1007/s11056-019-09722-z
复制
发表时间：
2020
期刊：
影响因子：
2.2
通讯作者：
Suarez
中科院分区：
文献类型：
--
作者：
Sparacino;Renison;Devegili;Suarez
热带和亚热带高山森林往往局限于峡谷，在山脊等其他地形上很少有森林存在。我们测试的假设，这种分布部分是由于土壤含水量增加和/或保护风在沟壑相比，山脊。我们种植了396株树苗的优势树种在一个三因素的实验，包括地形（山脊/沟壑），防风（保护/不保护）和水添加（浇水/不浇水）。我们监测风速和土壤含水量为一个完整的年周期和树苗的生存和生长为27个月。树苗存活率略有显着差异的地形，在山脊略大于在沟壑（分别为0.88和0.78），防风或水除了治疗没有显着差异。相比之下，树苗的生长大大减少了山脊相比，沟壑（16.1和26.0厘米，分别），防风处理表现出显着的积极影响的增长（树苗增长25.5和16.5厘米，有和没有防风），而水添加处理没有影响。重要的是，在山脊防风处理的树苗有类似的生长，在沟壑中的无保护的树苗，和生长差异，由于防风处理与风力强度呈正相关，这表明，减少风的影响，在沟壑是一个重要的非生物因子，促进森林发生在沟壑。
Tropical and subtropical high-mountain forests are often restricted to ravines, with forest presence being rare in other topographies such as ridges. We tested the hypothesis that this distribution is partly due to increased soil water content and/or protection from winds in ravines as compared to ridges. We planted 396 saplings of the dominant tree species in a three-factor experiment that included topography (ridge/ravine), wind protection (protected/unprotected) and water addition (watered/not watered). We monitored wind speed and soil water content for one complete annual cycle and sapling survival and growth for 27 months. Sapling survival presented marginally significant differences for topography, being slightly greater in ridges than in ravines (0.88 and 0.78, respectively), with no significant differences for wind protection or water addition treatments. By contrast, sapling growth was considerably reduced in ridges as compared to ravines (16.1 and 26.0 cm, respectively); the wind protection treatment showed a significant positive effect on growth (saplings grew 25.5 and 16.5 cm with and without wind protection, respectively), whereas the water addition treatment had no effect. Importantly, saplings under wind protection treatment in ridges had similar growth to that of unprotected saplings in ravines, and growth difference due to the wind protection treatment was positively correlated with wind intensity, suggesting that reduced wind impact in ravines is an important abiotic factor that promotes forest occurrence in ravines.
登录
查看更多内容
海拔和风力对亚高山造林中松树生长的影响
DOI：
--
发表时间：
1999
期刊：
影响因子：
--
作者：
H. Kronfuss;W. Havranek
通讯作者：
W. Havranek
火灾损害对将高山多鳞蝽森林限制在峡谷中的贡献：来自未重复比较的见解
影响因子：
3.9
作者：
J. Alinari;A. Müller;D. Renison
通讯作者：
D. Renison
栎树冬青幼苗建立过程中树荫环境下的小气候条件和植物形态生理发育
影响因子：
6.2
作者：
J. Oliet;D. Jacobs
通讯作者：
D. Jacobs
委内瑞拉安第斯山脉丝花萼树苗和分株的耐低温性
影响因子：
1.8
作者：
F. Rada;C. Garcia;S. Rangel
通讯作者：
S. Rangel
阿根廷中部山区 Polylepis 林地和灌木丛的覆盖和生长习性：人类或环境影响？
影响因子：
3.9
作者：
D. Renison;I. Hensen;R. Suárez;A. Cingolani
通讯作者：
A. Cingolani