宁夏罗山油松(Pinus tabulae for mis)树轮宽度对气候因子的响应分析  

Response of Tree-Ring Width of Pinus tabulae for mis to Climate Factors in Luoshan Mountains of Ningxia

作　　者：王亚军[1,2] 马玉贞[1] 郑影华[1] 鲁瑞洁[1] 桑艳礼[1] 蒙红卫[3] 

机构地区：[1]北京师范大学环境演变与自然灾害教育部重点实验室沙漠与沙区资源研究所,北京100875 [2]河北工程大学资源学院,河北邯郸056038 [3]兰州大学资源环境学院,甘肃兰州730000

出　　处：《中国沙漠》2009年第5期971-976,共6页Journal of Desert Research

基　　金：国家自然科学基金项目(40671184;40801004);高等学校博士学科点专项科研基金项目(20070027019)共同资助

摘　　要：树轮样本采自宁夏罗山油松纯林的下限和上限。建立了下限和上限的树轮宽度标准化年表,分析了树轮宽度与降水、气温、湿润指数(P/T)的相关关系,结果显示,下限和上限树轮宽度指数都与当年3月、5月、春季以及年降水量显著正相关,与7月气温显著负相关;下限树轮宽度标准化年表与气候要素的相关系数一般大于上限的相关系数,而且下限树轮宽度与前一年9月、秋季降水以及夏季气温的相关也达到显著水平,表明下限树轮宽度标准化序列对降水和气温单一气候要素的变化较敏感;下限和上限的树轮宽度指数和湿润指数(P/T)呈正相关关系,而且上限树轮宽度和3—8月湿润指数的正相关达到99%的置信水平,说明罗山油松纯林上限树轮宽度标准化序列对水热组合的响应较敏感。Tree-ring cores are sampled at lower and upper forest border of pure forests of Pinus tabulaeformis in Luoshan Mountains of Ningxia. The authors develop the tree-ring width index standard chronologies and analyze the statistical characters of two sites＇ chronologies. After anglicizing the response relationship between tree-ring width and precipitation, temperature and moisture index （P/T）, it is found out that the standard chronologies of two sites are all significantly related to March, May, spring and the annual precipi- tation and July temperature. There is a significant relation between the tree-ring width and the prior Sep- tember precipitation, autumn precipitation and summer temperature at lower forest border. Based on the size of the correlation coefficient and the number of significant factors, it is pointed out that the tree-ring width index standard chronology at lower forest border is relatively sensitive to the precipitation and tem- perature than that at upper forest border. Furthermore the tree-ring width trends are all positively correla- tive with the humid index, and the correlation coefficient between the tree-ring width standard chronology at upper forest border and March to August moisture index reaches 99 % level. The standard chronology at upper forest border is relatively sensitive to the combination of water and heat.

关 键 词：罗山 树木年轮 响应关系 

分 类 号：Q948.11[生物学—植物学]