沙漠与绿洲气象Issue(3)：30-38,9.DOI:10.3969/j.issn.1002-0799.2016.03.005
天山北坡中部不同海拔高度雪岭云杉树轮宽度气候响应对比分析
Tree-ring-width Growth Responses of Picea schrenkiana to Climate Change for Different Elevations in the Central Tianshan Mountains
摘要
Abstract
Tree-ring cores have been taken from thirteen sites at different elevations of two slopes in the central of Tianshan Mountains.These tree-ring-width chronologies of Picea schrenkiana have been determined using standard dendrochronological methods. The mean sequence of dependable tree-ring-width standard chronology among sampling sites decreased with increasing altitude. Tree-growth appeared different characters during cool or warm weather.Responses of upper- and low-limit to climatic factor in the non-growth season are similar and are contrary during the growth season. The response to temperature of tree-ring-width in high altitude reduced along with increasing of elevation in the growth season. Interference of growing environment is obvious in the different slopes, The DLJ site in the high altitude was mainly influenced by temperature, while tree growing in the STG site was more obvious response to precipitation. Relationships between chronologies and PDSI are positive correlations in keeping with relation in the central and western of North China. The best correlation appeared in low elevation. Principal component analysis was used to indicate regional variations in radial growth patterns.Among these tree-ring -width chronologies, the earliest three PCs explain 85% of their total variance, and response tree-ring growth to climate change for different elevations.According to the correlation analyses,the first PC of the all chronologies showed that moisture and temperature of the late period of prior year growth season and the early period of current year growth season are the most important limiting factors of tree growth, especially influence of persistent drought to same slope.关键词
树木年轮/雪岭云杉/天山北坡/海拔高度Key words
tree -ring/Picea schrenkiana/northern slope of Tianshan Mountains/different elevations分类
天文与地球科学引用本文复制引用
喻树龙,袁玉江,秦莉,尚华明,张同文,陈峰,张瑞波,范子昂..天山北坡中部不同海拔高度雪岭云杉树轮宽度气候响应对比分析[J].沙漠与绿洲气象,2016,(3):30-38,9.基金项目
国家自然科学基金（41205070），科技部公益性行业（气象）科研专项（GYHY201206014），公益性科研院所基本科研业务费专项资金项目（IDM201202）共同资助。 （）
