摘要
通过对解析木材料的研究,得出树木生长的拟合经验方程,即以年降量为变量、以年降水量为自变量的函数,通过对函数的求导等数学运算,求出树木生长的年降水量相对贡献率为79.6%,并通过对历史年水量数据的重建,得出气候变化呈干湿周期性变化的特征,气候变化周期在70a左右,并科学预见气候的湿润周期即将来临。
Based on the research of the parsed wood material, the fitting empirical equation of tree growth was concluded. Through this fitting empirical equation it was concluded that the relative contribution rate from the annual precipitation of tree growth is 79.6%. Through the reconstruction of the data of annual water yield in history, it is concluded that climate change was changed with characteristics of cyclical dry-wet, which climate change cycle was around 70 a, and the climate wetting cycle could be scientifically foresaw.
作者
张德全
王风臻
杨志军
赵燕
岳冬梅
房克清
ZHANG Dequan, WANG Fengzhen, YANG Zhijun, ZHAO Yan, YUE Dongmei, FANG Keqing(Shandong Forestry Monitoring and Planning Institute, Jinan 25001)
出处
《林业建设》
2018年第1期47-54,共8页
Forestry Construction
关键词
经验方程
解析木
年降雨量
Empirical equation
parsed wood
annual rainfall
