农林复合系统种间关系研究进展

Research advances in interspecific interactions in agroforestry system

种间相互作用在很大程度上决定了农林复合系统的生产力和可持续性,理解种间相互作用是经营和管理农林复合系统的关键。地上部分相互作用主要包括复合系统组分对光的竞争与互利、小气候的改变对系统生产力的影响;地下部分相互作用主要包括复合系统组分对水分和养分资源的竞争与互利、固氮树种对系统生产力的影响以及化感作用。今后需加强不同立地条件下的不同农林复合系统种间关系的比较、农林复合系统组分的空间分布格局、化感作用以及农林复合系统种间关系模型等研究。

The productivity and sustainability of agroforestry system depend on a large extent the interspecific interactions in the system. To understand these interactions is critical to the successful management of agroforestry system. Among the interactions, aboveground interaction includes the competition and facilitation for light, as well as the effects of microclimate change on system productivity, while belowground interaction includes the competition and facilitation for water and nutrients, the effects of nitrogen-fixing plants on system productivity and allelopathy. The studies on the comparison of interspecific interactions in different agroforestry systems under different site conditions, the spatial distribution patterns of agroforestry system component, allelopathy, as well as the models of interspecific interactions in agroforestry system should be strengthened in the future.