北京西山油松、栓皮栎及其混交林降雨分配特征  

Distribution Traits of Precipitation of Pinus tabulaeformis,Quercus variabilis and Mixed Forest of West Mountains in Beijing

作　　者：吴文强[1] 李萍[1] 孙向阳[2] 于鑫[2] 

机构地区：[1]北京市土肥工作站,北京100029 [2]北京林业大学

出　　处：《东北林业大学学报》2013年第9期26-29,共4页Journal of Northeast Forestry University

摘　　要：采用水量平衡的研究方法,对北京西山地区油松、栓皮栎林及两者的混交林3种不同林分的透流、干流、林冠截留与降雨量的变化以及各分量的分配进行了系统研究。结果表明:在相同的降雨条件下,树种和林分组成的不同,决定了不同林地的降雨分配;油松、栓皮栎及两者混交林的林冠截留与降雨量呈显著乘幂函数关系,干流、透流与降雨量呈显著线性关系。在3块林地的降雨各分量中,土壤贮水量最多的是栓皮栎林,最少的是油松林,混交林降雨各分量处于两者之间。枯枝落叶层大大减少了林地的地表径流。By using the analysis method of water balance, we studied the relationship of canopy interception, stem-flow and through-fall between rainfall in three different woodlands of Pinus tabulaeformis, Quercus variabilis and mixed forest of West Mountains in Beijing, systematically. Under the same rainfall, different species and constituent of trees result in the differ- ent precipitation distribution of woodlands. Stem-flow, through-fall and canopy interception have the distinct relationship with rainfall, stem-flow and through-fall are closely related with rainfall in linear function, and the canopy interception and rainfall are in the relationship with power function. In the precipitation components of three stands, the soil water retaining capacity of Quercus variabilis stand is the largest, followed by that of mixed stand, and that of Pinus tabulaeformis stand is the smallest. The litterfall layer greatly reduces the surface runoff of forests.

关 键 词：北京西山 混交林 降雨分配 水量平衡 

分 类 号：S715[农业科学—林学]