摘要
综合应用AbleSoftwareR2V的矢量化功能和AutoCAD的测量功能,提出一种新的树木年轮测量方法,并用此方法测定了冀北山地广为分布的白榆地径年轮宽度,进而用来尝试过去气候序列的重建。结果表明:5—9月平均气温和总降雨量与年轮指数成正相关,相关系数分别为0·597(α<0·05)、0·695(α<0·05)。以此为基础,建立了5—9月平均气温、总降雨量的转换方程,重建了冀北山地1940—1955年共16年5—9月平均气温和总降雨量。
Taking advantage of the vectorization function of Able Software R2V and measuring function of AutoCAD respectively, a new method to measure tree-ring is put forward, which has been used to measure the tree-ring diameter width of the elm（Ulmus pumila）distributed extensively in the mountainous area of northern Hebei province, and to try the reconstruction of past climates series. The conclusion demonstrates that average temperature and the total precipitation from May to September have positive correlation to the tree-ring indexes and the correlation coefficient are 0. 597 （ a 〈 0.05） and 0. 695 （ a 〈 0.05） respectively. According to these datum, a transformation equation of average air temperature and the total precipitation from May to September was build up. Finally, the average air temperatures and total precipitation from May to September of the 16 years （from 1940 to 1955） in the mountainous area of northern Hebei have been reconstructed.
出处
《中国水土保持科学》
CSCD
2005年第3期87-91,共5页
Science of Soil and Water Conservation
基金
环北京地区(首都圈)防沙治沙应急技术研究与示范"燕山丘陵山地(河北丰宁)防沙治沙技术示范区项目"(FS2000004)
