自然分布北界的大巴山黄杉树轮气候响应分析  

Analysis on Climate Response of Pseudotsuga sinensis Tree-rings in Ta-pa Mountains,the Northern Boundary of Natural Belt Distribution.

作　　者：徐宏范 张合理 尚华明[2,3] 王勇辉[1] 陈友平 XU Hong-fan;ZHANG He-li;SHANG Hua-ming;WANG Yong-hui;CHEN You-ping(School of Geographical Science and Tourism,Xinjiang Normal University Urumqi 830054,China;Institute of Desert Meteorology,China Meteorological Administration,Urumqi 830002,China;Key Laboratory of Physical Chemical Research on Tree-ring,China Meteorological Administration,Urumqi 830002,China)

机构地区：[1]新疆师范大学地理科学与旅游学院,新疆乌鲁木齐830054 [2]中国气象局乌鲁木齐沙漠气象研究所,新疆乌鲁木齐830002 [3]中国气象局树木年轮理化研究重点实验室,新疆乌鲁木齐830002

出　　处：《生态与农村环境学报》2021年第6期761-768,共8页Journal of Ecology and Rural Environment

基　　金：中央级公益性科研院所基本科研业务费(IDM2018003);国家自然科学基金(91547115);中国沙漠气象科学研究基金(Sqj2019002)。

摘　　要：黄杉(Pseudotsuga sinensis)是国家Ⅱ级濒危保护树种,目前基于该树种的树轮气候学研究较少。利用采自陕西省安康市镇坪县的黄杉树轮样芯,建立树轮宽度标准年表,采用Pearson相关方法分析树轮宽度指数与降水、气温、帕尔默干旱指数(PDSI)的相关关系。结果表明:研究区黄杉径向生长主要受降水和温度的影响,其中树轮宽度指数与生长季总降水量呈显著正相关(r=0.386,P<0.05),与上一年11月平均最高气温呈显著负相关(r=-0.364,P<0.05),与上一年10月PDSI呈显著正相关(r=0.485,P<0.01)。此外,在全球变暖的背景下,月平均最高气温可能对黄杉的径向生长起抑制作用。研究黄杉径向生长对气候要素的响应,了解研究区气候变化对黄杉生长的影响,可为相关部门研究该地区的气候变化提供理论基础。Douglas fir(Pseudotsuga sinensis),as a kind of the national classⅡendangered tree species,has been attracting comparatively less attention on its dendroclimatology so far instead.A standard tree-ring width chronology was established based on the tree-ring sample cores collected from Zhenping county,Ankang City,Shaanxi Province.Pearson correlation was introduced to analyze the correlation of tree-ring width index to the precipitation,the temperature as well as the PDSI.Results show that the width of Douglas fir was mainly affected by precipitation and air temperature,which was significantly positively correlated with the total precipitation in the growing season(r=0.386,P<0.05),negatively correlated with the average maximum temperature in November of the previous year(r=-0.364,P<0.05),and positively correlated with PDSI in October of last year(r=0.485,P<0.01).In addition,under the background of global warming,the monthly average maximum temperature may inhibit the radial growth of Douglas fir.Studying the response of tree-ring width to temperature and precipitation,and understanding the influence of climatic factors on the tree species of Douglas fir in the research area can provide theoretical basis for relevant departments in the climate change study of this region.

关 键 词：树木年轮 陕西 黄杉 气候响应 

分 类 号：K948.112[历史地理—人文地理学]