摘要
为了解影响罗霄山南部树木径向生长的主要气候要素,该研究运用树木年轮气候学研究方法,建立罗霄山南部4个针叶树种的树轮宽度标准化年表,阐明影响该区域4个针叶树种径向生长的主要气候要素,研究各树种在气温突变前后的径向生长特征及其对气候要素响应的异同。结果表明:年表特征参数显示,福建柏(Fokienia hodginsii)与其他树种相比,其树轮宽度年表所包含的气候信息可能较少。与气候要素的相关分析显示,铁杉(Tsuga chinensis)的径向生长同时受气温和降水的影响:与上年10月的降水量呈显著正相关关系,与气温的响应总体上呈负相关关系;资源冷杉(Abiesbeshanzuensisvar.ziyuanensis)仅与上年8月的降水量呈显著正相关关系;马尾松(Pinus massoniana)与上年3月和当年1月的最高气温呈显著正相关关系,与上年7月和当年8月的最低气温呈显著负相关关系;福建柏仅与当年3月的降水量呈显著正相关关系。气温发生突变后,4个树种树轮宽度指数的变化趋势相同,均呈下降趋势,除资源冷杉外,各个树种的径向生长对气候要素的响应总体上有所增强,且升温后产生的干旱胁迫抑制了各树种的生长。
Aims In this study we constructed and analyzed the standardized chronology of tree-ring width in four coniferous tree species,Abies beshanzuensis var.ziyuanensis,Fokienia hodginsii,Pinus massoniana and Tsuga chinensis,in southern Luoxiao Mountains,in order to investigate the radial growth characteristics of each species before and after the abrupt change in temperature,and to compare the similarities and differences among the four species in response to climate factors.Methods Chronologies were developed from the cross-dated ring width series using the program ARSTAN,based on the standardized dendrochronological method.The time trend series of meteorological data from 1960 to 2013 and tree-ring chronologies were analyzed with a linear fitting method.The Mann-Kendall method was used to test the mutation of meteorological data.Growth-climate relationships were determined by calculating the Pearson correlation coefficients between tree-ring width chronologies and climatic factors.Important findings The tree-ring width chronology of F.hodginsii provided less climatic signals than other three species.The radial growth of T.chinensis was affected by both temperature and precipitation:it was positively correlated with the precipitation in October of the previous year,but negatively with temperature.A.beshanzuensis var.ziyuanensis had a significant positive correlation with precipitation only in August of the previous year.P.massoniana was significantly positively correlated with the mean maximum air temperature in March of the previous year and January of the current year,and significantly negatively with the mean minimum air temperature in July of the previous year and August of the current year.F.hodginsii had a significant positive correlation with precipitation only in March of the current year.When temperature changed abruptly,the pattern of changes in the tree-ring width index was similar among the four species,all with a downward trend.The radial growth response to climate factors was enhanced in all species but A.beshanzuensis var.ziyuanensis,and their growth was inhibited by drought stress following warming.Results from this study provide information concerning the effects of climate change on tree growth and theoretical basis for forest ecosystem management and protection in the southern Luoxiao Mountains.
作者
王兆鹏
张同文
袁玉江
张瑞波
喻树龙
刘蕊
石仁娜•加汗
郭冬
王勇辉
WANG Zhao-Peng;ZHANG Tong-Wen;YUAN Yu-Jiang;ZHANG Rui-Bo;YU Shu-Long;LIU Rui;Shirenna JIAHAN;GUO Dong;WANG Yong-Hui(Key Laboratory of Lake Environment and Resources in Arid Land,School of Geographical Science and Tourism,Xinjiang Normal University,Urumqi 830054,China;Key Laboratory of Tree-ring Physical and Chemical Research of China Meteorological Administration,Xinjiang Laboratory for Tree Ring Ecology,Urumqi 830002,China;College of Resources and Environmental Sciences,Xinjiang University,Urumqi 830046,China)
出处
《植物生态学报》
CAS
CSCD
北大核心
2021年第12期1303-1313,共11页
Chinese Journal of Plant Ecology
基金
国家自然科学基金(41975095)
新疆维吾尔自治区重点实验室开放课题(2018D04028)
天山青年计划-杰出青年科技人才项目(2019Q007)。
关键词
罗霄山
树木年轮
针叶树种
气候因子
Luoxiao Mountains
tree-ring width
coniferous trees
climatic factor
