摘要
以福建北部宁德市虎贝镇柳杉树芯为对象,建立研究区68年(1950—2017)柳杉树轮宽度标准年表。通过年表与气候要素的响应分析发现:研究区柳杉树轮宽度与上一年7月和当年6月温度在原始序列和一阶差序列上均显著负相关(P<0.01),夏季高温造成的干旱胁迫限制了柳杉径向生长;标准年表与前一年7月至当年6月降水和标准化降水蒸散指数(Standardized Precipitation and Evapotranspiration Index,SPEI)在原始序列和一阶差序列上均显著正相关(P<0.01),柳杉生长亦受水文年降水限制,土壤水分在其中起到关键作用。柳杉宽度年表与当年1—3月全球海表温度(Sea Surface Temperature,SST)相关空间分布特征显示:树木径向生长与厄尔尼诺-南方涛动(ENSO)之间存在显著相关,说明ENSO可以通过遥相关(teleconnections)调控研究区的水文气候,从而影响区域的树木生长。
A 68-year standard tree-ring(STD)chronology(1950—2017)was established by using the tree-ring cores of Cryptomeria trees in Hubei Town,Ningde City,northern Fujian Province.Through the analysis of the response patters between the STD chronology and climatic factors,it is found that the radial growth of the Cryptomeria trees in the study area is significantly(P<0.01)negatively correlated with the original and the first-order difference data of temperature records from previous July to current June.Drought stress caused by high temperature in summer limits radial growth of Cryptomeria;significant positive correlation(P<0.01)is found between the STD chronology and the precipitation and Standardized Precipitation and Evapotranspiration Index(SPEI)from previous July to current June,and the growth of Cryptomeria is also limited by moisture change of hydrological year and soil moisture plays a critical role.The spatial correlation field of the tree-ring STD chronology and the global sea surface temperature(SST)from January to March shows that there is a significant correlation between the radial growth of trees and the El Ni o-Southern(ENSO),indicating that ENSO can regulate the hydroclimate variations of the study area by teleconnections,thus affecting the tree growth in the area.
作者
阮超越
董志鹏
李颖俊
曹新光
邴晓瑾
周非飞
RUAN Chaoyue;DONG Zhipeng;LI Yingjun;CAO Xinguang;BING Xiaojin;ZHOU Feifei(School of Geographical Sciences,Fujian Normal University,Fuzhou 350007,China;State Key Laboratory for Subtropical Mountain Ecology(Ministry of Sciences and Technology and Fujian Province Funded),Fujian Normal University,Fuzhou 350007,China;Taiyuan Normal University,Jinzhong 030619,Shanxi,China)
出处
《亚热带资源与环境学报》
2020年第1期11-18,共8页
Journal of Subtropical Resources and Environment
基金
国家外国专家局项目(GS20190157002)。
关键词
柳杉
树轮宽度
气候响应
Cryptomeria
tree-ring width
climate responses
