草业系统中的界面论

论述了草业系统中界面的特性、结构与作用。草业系统存在 3个主要界面 ,即草丛—地境界面 (A) ,草地—动物界面 (B)和草畜—经营管理界面 (C) ,这 3个界面将草业 4个生产层连缀而成完整的草业系统。界面是生态系统间以及生态系统与非生态系统间的分界和生态系统与外界连通的中介 ;界面的开放功能使系统内与系统间实现耦合 ,形成新的高一级生态系统 ;界面的共同特性是具有开放性 ,不均质性 ,但各层次的界面亦存在独特性 ,界面 A具多维性 ,而界面 B和 C则为轨迹面而无多维性。对草业系统内 3个主要界面的研究 ,将全面揭示各类草地生态系统发生与发展的过程与机理 ,为退化草地生态系统的恢复与草业系统重建提供理论依据与科学对策 ,并发展草业科学的方法论 ,促进草业的系统耦合 ,最终为发展草业科学和实现草业生产企业化作出贡献

The three major interfaces within pratacultural system

Characteristics, structure and function of the major interfaces within pratacultural system (grassland livestock production system) were illustrated. Three major interfaces were identified i.e. plant-site interface (A), grassland-animal interface (B) and grassland and livestock-management interface (C). The four production levels within the system are linked by the interfaces and a completed pratacultrual system is then formed. Open and heterogeneous are common features shared by the interfaces. The interfaces act as the boundaries between ecosystems and between ecosystems and non-ecosystems and as the linkage between ecosystems and their surroundings. The opening function of the interfaces results in system coupling, the advanced system is then formed. However, each of the major interfaces also has its own characters, for instance, Interface A is multi-dimensions, whereas Interfaces B and C are only a path with no dimension. The research on interfaces will provide a comprehensive understanding of process and mechanism of grassland ecosystem development, a theoretical basis and scientific strategy of recovery and reconstruction of degraded grasslands. Grassland research methodology will be developed during the process of interface research. Ultimately, the interface research will play a major role in the development pratacultural science and promotion of pratacultural production.