半干旱黄土丘陵区农业生态系统能量流动初探

A Preliminary Study on the Energy Flow in Agricultural Eco-system in Semi-arid Loess Hilly Area

本文通过对上黄村实施农林牧优化结构调整前后,农业生态系统能量供求状况的研究,认为实行以优化结构为中心的综合治理及注重对系统的物质能量输入,是农业生态系统由恶性向良性循环转化的有效途径,也是解决黄土高原丘陵地区农业生产问题的重要措施。

By comparing the states of energy flow in agricultural eco-systems before and after adjusting the agricultural, forest, animal husbandry ratios, the comprehensive harness which takes the optimizing structure as the central task and lay stress on the putting matrial and energy into the eco-system were regarded as the effective steps to turn the agricultural eco-system from a vicious circle to a fine circle, and were also regarded as a main measure to solve the agricultural production problem in Loess Hilly Area.