检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
出 处:《林业科学》2011年第3期189-193,共5页Scientia Silvae Sinicae
基 金:国家"十一五"科技支撑项目(2006BAD03A0804)
摘 要:树木年轮学方法在交叉学科的广泛应用促进了火灾史的相关研究,主要表现在采用大样本的交叉定年方法和根据早、晚材受灼烧伤程度的差异,来判断火灾发生的季节2个方面。首先树木年轮学提高了定年的准确性,使人能够深入了解火灾的范围和危害程度(Barrett et al.,1988;Romme et al.,1989;Bergeron,1991);其次,树轮资料提供的长时间干扰信息,In this paper data of tree-ring width were used to establish the chronologies of tree-ring width of the survival Korean pine (Pinus koraiensis) after fired,i.e.Standardized chronology (STD),Residual chronology (RES) and ARSTAN chronology (ARS).The chronology features were further analyzed.The results showed that: 1) the fluctuation of tree radial growth displayed a certain periodic and the average ring width was 1.615 mm with the lowest value happened in 1889—1917 and the highest one in 1958—1995;.2) The fired samples had a good consistency,containing a lot of high frequency information and some low frequency information,which were closely related to the atmospheric environment with an apparent"lag effect"to climate change;3) The RWI values changed in the cycles of 5.2 years and 3.6-3.9 years.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:3.15.149.213