...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Annual Research & Review in Biology >Climatic Influences on Basal Area Increment of Forests in a Mountainous Landscape
【24h】

Climatic Influences on Basal Area Increment of Forests in a Mountainous Landscape

机译：气候变化对山区景观林底面积增加的影响

获取原文
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Aims: The aim of this work is to assess the influence of temperature ( T ) and precipitation ( P ) on Basal Area Increment ( BAI ) of Pinus cooperi in a mixed conifer forest ecosystem. We hypothesize that the sensitivity of annual tree growth to climate variables will increase with increasing elevation. Study Design: The study area is located in "Las Rusias" mountain, in northwest Mexico. The sample design consisted of selection of three sites with different elevations: Low ( L ), Mid ( M ) and High ( H ), of representative stands of Pinus cooperi . Place and Duration of Study: The field work was carried out in October 2011, whilst processing data was done at Lab in December 2011. Methodology: Increment cores were collected from 3-10 trees at each site along the elevational gradient. Increment cores were extracted for each tree of Pinus cooperi at 1.3 m height using increment borers of 5 mm. Increment cores were processed using standard dendrochronological techniques. In order to determine the climatic response of the BAI chronology, BAI data was associated with climate records (1946-2010) from the nearby weather station. Results: The bootstrapped procedure conducted between the BAI and climatic variables showed significant correlations for the study area. All correlation coefficient values ranged from -0.5 to 0.42 (p<0.05). The Pearson′s coefficients indicated that BAI has been driven largely by ( P ) and ( T ) along the gradient. The relationships between BAI and P showed similar trends for the three elevations. P. cooperi BAI was positively correlated with precipitation during the previous winter. Conclusion: The results showed that the hypothesis that sensitivity to rainfall and temperature will vary along the elevation gradient appears reasonable. These findings could be used to suggest strategies for forest management, however some stand dynamics factors should be considered as well.
机译：目的：这项工作的目的是评估温度（T）和降水（P）对松树针叶林生态系统中樟子松基础面积增量（BAI）的影响。我们假设树木年生长对气候变量的敏感性将随着海拔的升高而增加。研究设计：研究区域位于墨西哥西北部的“ Las Rusias”山中。样本设计包括选择三个海拔不同的地点：松木代表林的低（L），中（M）和高（H）。研究的地点和时间：2011年10月进行了野外工作，2011年12月在实验室进行了处理数据。方法：沿海拔梯度从每个站点的3-10棵树上收集了增量岩心。使用5 mm的打孔钻在1.3 m的高度上为松树的每棵树提取增量核心。使用标准树状年代学技术处理增量岩心。为了确定BAI年表的气候响应，将BAI数据与附近气象站的气候记录（1946-2010）相关联。结果：在BAI和气候变量之间进行的自举过程显示了研究区域的显着相关性。所有相关系数值的范围为-0.5至0.42（p <0.05）。皮尔森系数表明，BAI主要由（P）和（T）沿梯度驱动。 BAI和P之间的关系在这三个高程处显示出相似的趋势。 P. cooperi BAI与前一个冬季的降水呈正相关。结论：结果表明，对降雨和温度的敏感度随海拔梯度变化的假设是合理的。这些发现可用于建议森林管理策略，但是也应考虑一些林分动态因素。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号