Recovery of Oak-Saw Palmetto Scrub after Fire
Recovery of Oak-Saw Palmetto Scrub after Fire
复制标题
火灾后橡木锯棕榈灌木丛的恢复
DOI：
--
复制
发表时间：
1992
期刊：
影响因子：
--
通讯作者：
C. Hinkle
中科院分区：
文献类型：
--
作者：
P. Schmalzer;C. Hinkle
我们以前建立的永久线截取样带（15米长），在橡树锯棕榈灌木6，12，18，24和36个月后，火灾和记录的0-0.5米和>0.5米的高度层，以确定恢复模式的分类群覆盖。样带位于两个立场，7年（6个样带）和11年（4个样带），因为最后一次火灾时烧毁。灌木和草本通过发芽恢复，在物种存在或物种丰富度上变化不大。再生的Serenoa repens燃烧后超过了橡树，其覆盖在>0.5 m层恢复到燃烧前的值在一年内。火灾后3年，橡树覆盖（>0.5 m层）小于预烧。生长率的差异导致了混合橡树锯棕榈样带优势度的变化。我们使用去趋势对应分析排序，以研究火灾后的恢复力。橡树棕榈擦洗是非常有弹性相比，大多数灌木。所有的演替矢量返回到原来的位置，在火灾在7-11年的间隔。恢复模式沿着灌丛成分梯度变化。混合橡树看到棕榈样带恢复较慢，并表现出更大的变化，他们的火灾后组成比看到棕榈为主的样带燃烧后三年。
We sampled previously established permanent line-intercept transects (15 m length) in oak-saw palmetto scrub 6, 12, 18, 24, and 36 months after a fire and recorded cover by taxon in the 0-0.5 m and >0.5 m height layers to determine patterns of recovery. Transects were located in two stands that were seven years (six transects) and 11 years (four transects) since the last fire when burned. Shrubs and herbs recovered by sprouting with little change in species present or species richness. Regrowth of Serenoa repens after burning exceeded that of the oaks; its cover in the >0.5 m layer returned to preburn values within one year. Oak cover (>0.5 m layer) was less than preburn three years after the fire. Differences in growth rates resulted in changes in dominance of mixed oak-saw palmetto transects. We used detrended correspondence analysis ordination to examine resilience after fire. Oaksaw palmetto scrub is very resilient compared to most shrublands. All successional vectors returned toward original locations in fires at 7-11 year intervals. Patterns of recovery varied along the scrub composition gradient. Mixed oak-saw palmetto transects recovered more slowly and showed greater changes in their post-fire composition than saw palmetto-dominated transects three years after burning.
1985 年空间辐射研讨会 .54 (1985)
DOI：
--
发表时间：
--
期刊：
影响因子：
--
作者：
通讯作者：
--