摘要
研究基于标准的树轮年代学研究方法(样芯经固定、晾干、打磨、交叉定年、测量和标准化等处理),首次建立了大别山西部的黄柏山百战坪的黄山松树轮宽度标准年表。研究发现,黄山松宽度年表有较高的信噪比SNR和样本解释总量EPS,表明树轮宽度年表中含有较多的气候信息,适合做树轮气候学研究。树轮宽度年表与气象因子关系的研究结果显示,黄山松树轮宽度与上一年10月、12月及当年的5月至9月的气温(包括月均最高气温、月均温和月均最低气温)呈较高的负相关,且在上一年的12月和当年7月月均最高气温和月均温的限制作用较强,而上一年10月月均温限制作用最大,这表明上一年生长季末和当年生长季中的高温通过对水分的影响限制黄山松的生长。树轮指数与当年2月、4月至7月的月降水及月相对湿度(6月份除外)均呈较高正相关,说明在进入生长期前后充足水分对黄山松生长有促进作用,但当降水或相对湿度过大时(如上年8月与当年6月)对黄山松生长就起到一定的限制作用。本研究结果填补了大别山西段树木年轮研究的空白,为该区域树木年轮气候重建研究提供参考和基础数据,也为黄柏山自然保护区今后的森林培育和森林管理提供了一定的理论依据。
We developed the first tree-ring width standard chronology from the Huangshan pine （Pinus Taiwan Residents＇s Hayata） samples at Baizhanping of Huangbaishan in the western Dabie Mountains using the standard dendrochronology methods. The study indicated that the chronology has high signal-to-noise ratio （SNR） and expressed population signal （EPS） and is suitable for dandroclimatic studies due to its strong climatic signal. Significant, negative correlations between ring-width chronology and temperature （including month mean maximum air temperature and month mean temperature and month mean minimum air temperature） were found at previous October and December and from May to September in current year. The close relationships of tree growth with the maximum temperature and mean temperatures of previous December and current July and mean temperature of previous October implied that high temperature of the end of previous growing season and the current growing season are the major determinants for the growth of Huangshan pine via an influence on water. Significant, positive correlations were found between tree-ring indices and monthly precipitation and monthly relative humidity of current February and from April to July （excluding June）. This indicatedthat abundance moisture during the previous and currentgrowing season would promote the growth of Huangshan pine, but excessive water and relative humidity such as previous August and current June could limit the growth of Huangshan pine. This study explored the relationships between secondary-forest tree-ring growth of Huangshan pine in western Dabie mountain and climate factors. This is the firstdendroclimatic investigation in this region and provided some basic data for the regional tree-ring climate reconstruction, which can be useful for forests managements and forest cultivation also in this region.
出处
《生态环境学报》
CSCD
北大核心
2013年第11期1769-1773,共5页
Ecology and Environmental Sciences
基金
国家自然科学基金项目(31270493)
河南省教育厅自然科学基金项目(2011B170003)
河南大学资源环境研究所项目(HD-ZHS-2010-02)
关键词
大别山
黄山松
树木年轮
标准年表
气候响应
Dabie Mountains
Huangshan pine
tree-ring
standard chronology
climatic response
