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采用根钻取样方法对年生水曲柳落叶松混交林中细根空间分布状况进行了研究。结果表明,水曲柳落叶松地下生物量的空间分配差异显著。在林分水平上,水曲柳的根生物量密度高于落叶松(分别为4442.3和2234.9g/m3)。两树种在相邻区域中分配的细根生物量较高,表明种间根系竞争较弱。落叶松行间的水曲柳细根生物量密度和根长密度均高于水曲柳行间的落叶松细根,表明水曲柳地下部分具有较强能力。根系的空间分布有利于混交林中水曲柳的生长。图1表4参19。
The root-borne sampling method was used to study the spatial distribution of fine roots in the aged mixed forest of Ash. The results showed that there was significant difference in the spatial distribution of the underground biomass of the Chinese ash. At stand level, the root biomass of Fraxinus mandshurica was higher than that of larch (4442.3 and 2234.9 g / m3, respectively). The fine root biomass distributed by the two species in adjacent areas is high, indicating weak competition between interspecific root systems. The fine root density and root length density of B. alterniflora were higher than that of the fine roots of Larix gmelinii in the row of larch, which indicated that the underground part of ash was strong. The spatial distribution of root system is beneficial to the growth of Fraxinus mandshurica in mixed forest. Figure 1 Table 4 参 19.