Biopedological origin of peatlands in South East Alaska
Biopedological origin of peatlands in South East Alaska
复制标题
阿拉斯加东南部泥炭地的生物土壤学起源
作者：
F. Ugolini;Daniel H. Mann
泥炭地是阿拉斯加东南部水平表面上植物演替的最后阶段，在这个地区，沼泽和森林在变成沼泽的过程中占据了几乎与森林一样多的表面积。植物演替在这一领域的部分条件是渐进沼泽化4，然而，没有以前的尝试已经取得了与土壤发育的沼泽化。我们现在提出，在阿拉斯加东南部的Lituya湾地区的泥炭地的形成是由土壤的内部排水恶化所造成的，因为在灰化的过程中，铁水泥盘的发展。这种情况提供了一个明显的例子，土壤引起的沼泽形成，一个过程，可能是重要的，在世界其他地区。
Peatlands are the final stage in plant succession on level surfaces in South East Alaska, a region where bogs and forests in the process of turning into bogs occupy nearly as much surface area as do forests proper1–3. Plant succession in this area is in part conditioned by progressive bogging4; however, no previous attempts have been made to relate paludification to soil development. We now propose that the formation of peatlands in the Lituya Bay area of South East Alaska is caused by the deterioration of the internal drainage of the soil as an iron-cemented pan develops during the process of podzolisation. This situation provides a clear example of soil-induced bog formation, a process that may be important in other parts of the world.