中国东南高海拔黄山松生长对气候的响应--以浙江省九龙山和安徽省牯牛降为例  

High altitude Pinus taiwanensis Hayata growth response to climate in Jiulongshan and Guniujiang,Southeastern China

作　　者：李玲玲[1] 史江峰[1,2,3] 侯鑫源 叶金水 毛海波[4] 赵欣慰[1] 鹿化煜[1] 

机构地区：[1]南京大学地理与海洋科学学院,南京210023 [2]中国科学院南京地理与湖泊研究所,南京210008 [3]Lamont-Doherty Each Observatory,Columbia University,Palisades,New York 10964,USA [4]遂昌县林业局,浙江遂昌323300

出　　处：《应用生态学报》2014年第7期1849-1856,共8页Chinese Journal of Applied Ecology

基　　金：全球变化研究国家重大科学研究计划项目(2010CB950104);国家自然科学基金项目(41271210,41021002);中央高校基本科研业务费专项资金项目(20620140083);江苏高校优势学科建设工程项目和国家留学基金项目资助

摘　　要：利用中国浙江省西南部九龙山自然保护区和安徽省南部牯牛降的高海拔黄山松树轮径向宽度资料,分别建立了2个树轮宽度差值年表(RES).由子样本信号强度(SSS)>0.8判定,九龙山年表(JLS01)的可靠时段为1884—2010年,牯牛降年表(GNJ01)的可靠时段为1837—2008年.将采样点周围气象站气象数据做算术平均代表区域气候状况,利用相关函数检验了两年表与区域气象数据的月降水量、月平均温度、月平均相对湿度、月总云量和月日照时数的关系.结果表明:2个高海拔点树木径向生长主要受夏季(上年6、7月,当年6月)水热条件的影响.九龙山年表与上年6、7月温度呈显著正相关,与上年6、7月和当年6月降水及相对湿度呈显著负相关,与上年7月总云量呈显著负相关,与上年6、7月日照时数呈显著正相关;牯牛降年表与上年7月温度呈显著正相关,与上年7月和当年6月降水及相对湿度呈显著负相关,与上年6月总云量呈显著负相关,与上年7月、当年6月日照时数呈显著正相关.由于高海拔地区温度较低,夏季温度的升高有利于该地区树木生长,同时较多降水对应的高相对湿度、高云量和低日照时数,限制了光合作用产物的合成,导致树木的径向生长受到抑制.Two robust Pinus taiwanensis Hayata tree-ring width chronologies were developed at high elevation sites in Jiulongshan Natural Conservation Area （ JLSO1 ）, southeastern Zhejiang Province and Guniujiang （GNJ01）, southern Anhui Province, China. The reliable period was 1884-2010 for JLSO1 and 1837-2008 for GNJ01, based on subsample signal strength （SSS） threshold value of 0.8. Meteorological data were monthly mean temperature, monthly total precipitation and monthly mean relative humidity, monthly total cloud cover, as well as monthly sunshine duration. The data from the meteorological stations around the sampling sites were averaged to represent regional cli- mate, which were used in the correlation analyses with the tree-ring chronologies. The correlation analyses indicated that summer （prior June-July and current June） hydrothermal condition was the main limiting factor on radial tree growth at the two high elevation sites. For JLS01 chronology, sig- nificant positive correlations were found with prior June-July temperature and sunshine duration, significant negative correlations with prior June-July and current June precipitation and relative humidity, and total cloud cover of prior July. GNJO1 chronology was significantly positively CO^Telated with prior July temperature as well as prior July and current June sunshine duration, negatively cor- related with prior July and current June precipitation and relative humidity, as well as total cloud cover of prior June. These results showed that relatively high temperature could promote radial growth, whereas high precipitation, together with high relative humidity, high cloud cover and low sunshine duration, could limit the photosynthesis and thus restrain the radial tree growth.

关 键 词：浙江省九龙山 安徽省牯牛降 黄山松 树轮宽度 气候响应 

分 类 号：S716.3[农业科学—林学]