秦岭太白山地区树轮宽度对气候变化的响应
Response of Tree Ring Width to the Climate Change in Taibai Mountain of Qinling Mountainous Area
段媛 1金凤 1许明子1
作者信息
- 1. 西北大学城市与环境学院,陕西西安710000
- 折叠
摘要
[目的]研究太白山树木年轮宽度对气候变化的响应.[方法]以秦岭地区太白山森林公园及太白山自然保护区高山林线附近的太白红杉为研究对象,建立了该地区1822～2013年树轮标准化年表;应用相关性分析、逐步回归等方法对其树轮生长动态及气候因子变化的响应进行了分析.[结果]太白山地区太白红杉树木年轮包含了丰富且敏感的气候信息,适合进行树木年轮学分析,且其标准化年表与当年3、5和6月平均气温呈显著正相关,与当年4、6月平均降水量呈显著负相关;滞后性研究表明其标准化年表与上年4月平均气温呈显著正相关关系,与上年12月气温呈显著负相关关系;与上年月平均降水量均无显著相关.[结论]建立了太白山树木年轮宽度对气候因子变化的响应函数,为研究及解释秦岭地区气候变化对树木生产的影响提供科学依据.
Abstract
[Objective] To research the response of tree ring width to the climate change in Taibai Mountain of Qinling Mountainous Area.[Method] With Larix chinensis near the alpine timberline in Taibai Mountain Forest Park and Taibai Mountain Nature Reserve as the research object,standardization chronology of tree ring was established from 1822 to 2013.Dynamic change of tree ring and climate factor changes were researched by stepwise regression and correlation analysis.[Result] Tree ring of L.chinensis in Taibai Mountain included abundant and sensitive climate information,which was suitable for the tree-ring analysis.The standardization chronology had significantly positive correlation with the average temperatures at March,May and July of the current year,and showed significantly negative correlation with the average precipitation at April and June of the current year.Hysteresis research showed that the standardization chronology had significantly positive correlation with the average temperature at April of the previous year,showed significantly negative correlation with the temperature at December of the previous year,and had no significant correlation with the average monthly precipitation of the previous year.[Result] The response function of tree ring width to climate factor change is established,which provides scientific references for the research on the effects of climate change on tree production in Qinling Mountainous Area.
关键词
秦岭太白山地区/树轮宽度/气候变化/响应函数Key words
Taibai Mountain of Qinling Mountainous Area/Tree-ring width/Climate change/Response function引用本文复制引用
出版年
2016
国家科技期刊平台
NSTL
维普
万方数据