基于器测和格点气象数据的巴山冷杉树轮——气候响应对比研究  

Comparative study on response of Abies fargesii tree ring to climate based on instrumental and gridded meteorological data

作　　者：秦进 白红英[2] 赵培 岳军伟 王蓉 QIN Jin;BAI Hongying;ZHAO Pei;YUE Junwei;WANG Rong(College of Urban,Rural Planning and Architectural Engineering,Shangluo University,Shangluo 726000;Shaanxi Province Key Laboratory of Earth Surface System and Environmental Carrying Capacity,Northwest University,Xi’an 710127,China)

机构地区：[1]商洛学院城乡规划与建筑工程学院,商洛726000 [2]西北大学陕西省地表系统与环境承载力重点实验室,西安710127

出　　处：《干旱区资源与环境》2021年第10期105-111,共7页Journal of Arid Land Resources and Environment

基　　金：陕西省科技厅自然科学基础青年研究项目(2021JQ-843);陕西省教育厅自然科学专项(20JK0616);气候适应型城市重点实验室开放研究基金(SLSYS2019007);林业公益性行业科研专项(201304309)资助。

摘　　要：对牛背梁地区巴山冷杉(Abies fargesii)轮宽差值年表与秦岭南、北坡地面器测气象数据及覆盖研究区的5°×5°CRU TS 4.04格点气象数据的响应关系进行探讨,探析气象数据选取对树轮-气候响应特征的影响。结果表明:差值年表对器测、格点气温数据的响应显著时段具有极强一致性,体现在与2月、10月或上年冬季、当年秋季气温的显著正相关,指示生长季初、末期较高气温对树木生长的促进;差值年表对器测、格点降水数据的响应特征分异明显,主要体现在与南坡上年10月器测降水显著负相关、与北坡当年9月器测降水显著负相关、与研究区格点当年5月降水显著正相关、上年10月降水显著负相关,进一步证实了降水空间异质性对树轮气候学研究的影响。研究结果可为高山气象数据短缺地区数据来源选取提供一定参考。To discuss the impact of meteorological data selection on tree ring-climate response features,we analyzed the response relationship between tree-ring width residual chronology of Abies fargesii in the Niubeiliang area with the instrumental meteorological data on the southern and northern aspects of Qinling Mountains as well as the 5°×5°CRU TS 4.04 gridded meteorological data covering the study area.The results indicated that:The significant periods in response of the residual chronology to instrumental and gridded temperature data is extremely consistent,which is reflected in the significant positive correlation with the temperature in February,October or last winter,and current autumn,indicating that higher temperature promotes the growth of trees at the beginning and the end of growing season;the response characteristics of residual chronology to the instrumental and gridded precipitation data are obviously different,which is mainly reflected in the significant negative correlation with the instrumental precipitation in October of the previous year on the southern slope,significant positive correlation with the instrumental precipitation in September of current year on the northern slope,while a significant positive correlation with the precipitation in current May and a significant negative correlation with the precipitation in previous October at the gridded data of the study area,which furtherly confirms that the spatial heterogeneity of precipitation influences the dendroclimatological research.This study may provide a certain reference for the selection of data sources in areas with a shortage of alpine meteorological data.

关 键 词：巴山冷杉 气象数据来源 气候响应 牛背梁 

分 类 号：P46[天文地球—大气科学及气象学] S718.5[农业科学—林学]