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为了验证对阿拉斯加东南部温带雨林中有关栖息地关系的预测,我们于1999年和2000年8-9月以及1999年和2000年4-5月研究了亚历山大群岛加氏(Clethrionomys gapperi)和肯氏鹿鼠(Peromyscus keeni)种群。我们测量了26个植被和结构特征以检验林隙老龄生长林、多时代老龄生长林、采伐前壮龄(23岁)生长林和泥炭混交针叶林的丰富度与微栖息地利用的相关性。微栖息地利用随季节和栖息地而变化,但加氏与林下落叶灌木覆盖度的正相关最显著。肯氏鹿鼠利用的微环境的林地有较少的苔藓,但是林隙与抓获加氏的概率有直接关系。两种鼠在两个季节的密度与林下腐朽的倒木直接相关。春季的肯氏鹿鼠密度说明加氏密度变化的62%,说明肯氏鹿鼠密度变化的89%。我们的结果印证了早期对阿拉斯加东南部肯氏鹿鼠在各种栖息地尤其早期的演替林中兴旺时的研究;但偏离了西部地貌中肯氏鹿鼠种群在晚期演替针叶林中达到最高密度的普遍结论。与北美西北部其它地区的种群不同,加氏能持久生活在上层被砍伐的雨林板块中。泥炭针叶混交林对两种鼠的繁殖种群几乎没有贡献,因而不可能减轻对多产的老龄生长雨林大规模皆伐所造成的影响。
In order to validate the prediction of habitat relationships in temperate rainforests in southeastern Alaska, we examined the Clethrionomys gapperi and Kenyon tests from January to August 1999 and April to May 2000 and from April to May 2000, Peromyscus keeni population. We measured 26 vegetation and structural characteristics to test the correlation between the richness of forest stands and the use of micro-habitat in aged gap forests, multi-aged stands, long-tailed (23 years old) before harvesting and coniferous mixed stands . The use of micro-habitats varies with the seasons and habitats, but the positive correlation between the degree of micro-habitat and the coverage of deciduous shrubs is most significant. The woodlands of the microenvironment used by Keck deer mouse have less moss, but the gap is directly related to the probability of catching Gatwick. The density of two species of rats in two seasons is directly related to decaying fallen wood in the forest. The density of Keer’s deer in spring shows 62% of the change in density of Kaiser’s, indicating 89% of the density change in Keer’s deer. Our results corroborate the earlier studies of Kestrel deer in the southeastern part of Alaska when thriving in various early habitats, especially in the early succession forests; however, they deviated from the highest densities in the late-successional coniferous forest in the western landform The general conclusion. Unlike populations in other parts of northwestern North America, Garganta lives permanently in the upper deforested rainforest plate. Conifer coniferous mixed forests contribute little to the breeding stock of the two species, making it unlikely that they will mitigate the effects of large-scale clear-cut on prolific growing rain forests.