Rapid shifts in plant distribution with recent climate change
Rapid shifts in plant distribution with recent climate change
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DOI：
10.1073/pnas.0802891105
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发表时间：
2008-08-19
影响因子：
11.1
通讯作者：
Goulden, Michael L.
中科院分区：
文献类型：
--
作者：
Kelly, Anne E.;Goulden, Michael L.
气候的变化预计会改变植物的分布，因为物种在新的有利地区扩张，在日益不利的地区减少。我们比较了1977年和2006-2007年在南加州圣罗莎山脉2314米海拔梯度上进行的植物覆盖调查。在第二次调查前的30年间，南加州地表气候变暖，降水变率增加，降雪量减少。我们发现优势植物的平均海拔在两次调查之间上升了约65 m。这种变化不能归因于空气污染或火灾频率的变化，而似乎是区域气候变化的结果。
A change in climate would be expected to shift plant distribution as species expand in newly favorable areas and decline in increasingly hostile locations. We compared surveys of plant cover that were made in 1977 and 2006-2007 along a 2,314-m elevation gradient in Southern California's Santa Rosa Mountains. Southern California's climate warmed at the surface, the precipitation variability increased, and the amount of snow decreased during the 30-year period preceding the second survey. We found that the average elevation of the dominant plant species rose by approximate to 65 m between the surveys. This shift cannot be attributed to changes in air pollution or fire frequency and appears to be a consequence of changes in regional climate.