干旱区生态环境知识资源中心(Arid): 桂林三月岭马尾松树轮宽度对气候变化的响应

Arid

	桂林三月岭马尾松树轮宽度对气候变化的响应
其他题名	Responses of tree-ring width of Pinus massoniana to climate change in Guilin, Guangxi Province
	段丙闯; 蔡秋芳
来源期刊	地球环境学报
ISSN	1674-9901
出版年	2017
卷号	8 期号:3 页码:243-252
中文摘要	利用采自广西桂林三月岭湘桂古道的马尾松树轮样本,建立研究区的标准树轮宽度年表。树轮气候响应分析发现:马尾松径向生长与当年6 9月平均温度(r =-0.51,p<0.01)和上年2 11月平均温度(r =-0.53,p<0.01)显著负相关,与上年10月降水量显著正相关,与当年6月、7月、8月的平均相对湿度和帕尔默干旱指数(PDSI)显著正相关。说明生长季当年6 9月伴随高温产生的干旱胁迫抑制了马尾松的生长,上年气候对当年树木生长存在滞后影响。空间分析显示,研究区树轮年表与我国大范围季风区、西北干旱半干旱地区上年2 11月平均温度变化相关关系显著,与中南半岛北部地区当年6 9月平均温度显著负相关。1976 1977年前后树轮年表与海表温度空间相关型的变化,表明研究区夏季的温度气候要素与大尺度的气候驱动太平洋年代际震荡(PDO)有一定联系。
英文摘要	Background, aim, and scope It is essential for researchers to know more about past climate variations from the study of climatic proxy data, such as ice core, loess, tree-ring and stalagmite. Tree-ring, due to its accurate dating, continuous, high resolution and sensitive to climate change, has been widely used to reconstruct the past climatic index. Many paleoclimate series has been rebuilt based on tree-ring width by researchers. In China, tree-ring studies in the subtropical regions are much rarer than extratropical regions, which are mainly caused by the complex relationship between environmental factors and the tree-ring growth in subtropical area and the difficulty in cross dating. Our study aimed to reveal the responding mechanism of tree-rings to climate factors. Materials and methods In our study, the standardized tree-ring width chronology was developed based on 90 tree-ring cores from 42 healthy Pinus massoniana, collected from Guilin, in subtropical south China (25°22′ 25°23′N, 110°31′ 110°32′E, 480 m a.s.l) during September, 2015. All the tree-ring cores were dealt with standard dendrochronological method. The cores were visually dated and measured using the LINTAB measurement machine with resolution of 0.01 mm and cross dated by the COFECHA program. Then we use the series that successfully passed the COFECHA program to develop the standardized tree-ring chronology via the ARSTAN program. Considering the complex environment of sampling site, we use the mean meteorological data of the nearest three weather stations (Guilin station, Rongan station and Daoxian station, records from 1959 to 2014) to reduce the possible influence of micro-climate. To determine whether the climate had impact on the radial growth of Pinus massoniana and which climate factor limited tree growth most, we used Pearson correlation analyses to calculate the correlation coefficients between ring-width STD chronology and climate factors. Global Monthly Dai Palmer Drought Severity Index (PDSI) (108.75° 111.25°E, 23.75° 26.25°N, 1942 2005) were also analysed against the STD chronology. Spatial correlation patterns of the observed temperature and the STD chronology and the gridded data (land temperatures and SST) were calculated via the website http://climexp.knmi.nl. Results Growth-climate response analyses showed that the growth of Pinus massoniana negatively correlated with the monthly mean temperature variability of current June September (r= -0.51, p<0.01) and previous February November (r= -0.53, p<0.01), positively correlated with the previous October precipitation (r= 0.32, p<0.05). Tree rings also significantly correlated with the monthly relative humidity and PDSI of current June, July and August. Result of spatial correlation showed that the XGGD tree-ring STD chronology significantly correlated with the temperatures in the monsoon fringe area and north Indochina Peninsula area. Spatial correlation pattern between tree-ring STD chronology and SST also showed a shift before and after 1977. Discussion In the study, no significant correlation was found between the meteorological data and chronology in the early stage of tree growth.
中文关键词	桂林 ; 马尾松(Pinus massoniana) ; 中国东部亚热带 ; 树轮宽度 ; 气候响应 ; 温度
英文关键词	Guilin Pinus massoniana subtropical southeast China tree-ring width climate response temperature
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:6028209
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/378906
作者单位	段丙闯, 中国科学院地球环境研究所, 黄土与第四纪地质国家重点实验室, 西安, 陕西 710061, 中国.; 蔡秋芳, 中国科学院地球环境研究所, 黄土与第四纪地质国家重点实验室, 西安, 陕西 710061, 中国.
推荐引用方式 GB/T 7714	段丙闯,蔡秋芳. 桂林三月岭马尾松树轮宽度对气候变化的响应[J],2017,8(3):243-252.
APA	段丙闯,&蔡秋芳.(2017).桂林三月岭马尾松树轮宽度对气候变化的响应.地球环境学报,8(3),243-252.
MLA	段丙闯,et al."桂林三月岭马尾松树轮宽度对气候变化的响应".地球环境学报 8.3(2017):243-252.