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在2001年森林生长季(6-9月),通过测量降雨各分量,分析了中国吉林省长白山北坡红松阔叶林冠层对降水分配各分量的影响。结果表明:干流量(37.39 mm),透流量(326.02 mm)和截留量(105.67 mm),分别占同期降雨量(469.08 mm) 的7.97%、69.50%和22.53%。林冠对降雨的月份分配规律是:树干茎流率的月变化为七、八月份大于其它月份,穿透率从6-9月份有逐渐减少的趋势,而截留率的变化正好与穿透率相反,从19.43%增加到31.02%。林内降雨中的养分元素浓度发生显著变化,除Ca、Mg外,其它元素的浓度都有所增加。经分析得出,大气降雨中养分元素的浓度序列为:Ca> Mg> N> K> Fe > P> Cu > Mn;而穿透雨中养分元素的浓度序列为:K>N>Mg>Ca>P>Fe>Mn>Cu;在林冠淋溶中各养分元素的浓度序列为:Mn> P>K>Cu>Fe>N>Mg>Ca。图1表5参13。
In the 2001 forest growing season (June-September), by measuring the rainfall components, the impact of the canopy layer on the components of precipitation distribution on the northern slope of Changbai Mountain in Jilin Province of China was analyzed. The results showed that dry flow (37.39 mm), permeate flow (326.02 mm) and interception (105.67 mm) accounted for 7.97%, 69.50% and 22.53% of the same period rainfall (469.08 mm) respectively. The canopy monthly distribution pattern of rainfall is as follows: the monthly variation of stem flow rate is seven, August is greater than other months, the penetration rate from June to September has a decreasing trend, and the change of rejection rate just contrary to the penetration rate , From 19.43% to 31.02%. The concentration of nutrient elements in forest rains significantly changed, except for Ca and Mg, the concentration of other elements increased. The results showed that the concentration of nutrient elements in the rainfall was: Ca> Mg> N> K> Fe> P> Cu> Mn. P> Fe> Mn> Cu. The concentrations of nutrient elements in the canopy leaching were Mn> P> K> Cu> Fe> N> Mg> Ca. Figure 1 Table 5 Reference 13.