Estructura y función en los agrobiosistemas

R E S U M E N El autor da unas ideas generales sobre funcionamiento de los agrobiosistemas, con flujo energetico a traves de mecanismos biologicos (homeostasis en comunidades naturales) que lo utilizan para mantener su estabilidad. La simplificacion agronomica debe ser muy discriminada, actuando en celdas de una estructura compleja (mallas con setos y bosquetes cortavientos) que trabaja para estabilizar al conjunto. SUMMARY The author presents theoretical ideas on structural simplification of agricultural communities. Soil ecology and its stability are dependent on productivity. In simplified communities (grasslands and arable fields) with high production for unity of biomass, the homeostasis of the system is controled by man (farming), but natural communities have the highest stability and a natural homeostasis; it is necessary an agricultural network (edges, small forests and so on) for the highest productivity and stability.