摘要
对东北东部山地的 19年生樟子松人工林的降雨分配规律进行了 2a的观测。结果表明 ,樟子松人工林的林冠截留量为 0 .4～ 9.5mm ,占总降雨量的百分率为 5 .1%～ 91.7%。林内雨量为 0 .1～ 72 .2mm ,占降雨量的百分率为 8.3%～ 87.7%。林冠截留量、林内雨量均与降雨量和降雨强度呈显著的线性相关。林冠截留比率随降雨量的增加逐渐下降 ,而林内雨量比率随降雨的增加而增加。林内地表迳流与当日的降雨量和当日降雨强度显著相关 ,与前 2天的降雨量相关不显著 ;林外地表迳流只与当日降雨量显著相关。随降雨量的增加 ,林外地表迳流增长的幅度大于林内 ,林内地表迳流增长的幅度大于林外。在樟子松人工林内产生的地表迳流很小 ,测得的最大迳流量为 0 .186mm ,大部分降雨进入了土壤之中。
The precipitation's distribution law of the 19-year Scots pine plantation was observed in the east of the Northeast Hills for two years. The results show that the canopy interception of the Scots pine plantation is 0.4～9.5 mm, accounting for 5.1%～91.7% of the total precipitation. The inner precipitation is 0.1～72.2 mm, 8.3%～87.7% of the precipitation. The canopy interception and the inner precipitation have a significant linear correlation with the precipitation density. The ratio of the canopy interception decreases with the increase of the precipitation, while that of the inner precipitation increases with the increase of the precipitation. The inner surface runoff is significantly correlated with the intraday precipitation and its density, which is little correlated with the precipitation in the last two days, and the outer is only significantly correlated with the intraday precipitation. With the increase of the precipitation, the increase range of the outer surface runoff is wider than that of the inner, but with the increase of the precipitation density, the inner is wider than the outer. The surface runoff is very little in the Scots pine plantation, the most of which is 0.186 mm, as most of it goes into the soil.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2003年第3期11-13,共3页
Journal of Northeast Forestry University
