通过对甘南县音河乡的农防林进行“增针减阔”、“以松改杨”、“小网窄带”方式的更新优化 ,从多个方面对优化前后的农防林进行了持续稳定性的比较分析 ,结果表明 ,优化后的农防林的生态、经济、社会效益较优化前明显的提高 ,从而对东北农田林网区防护林的持续稳定发展起到了较好的示范作用。 Through the updating and optimization of “increasing needles and reducing width”, “rejuvenating and rejuvenating” and “narrowing nets” of Yinnong Township, Gannan County, the prevention and control of agricultural and forestry forests before and after the optimization were carried out in various aspects The results showed that the ecological, economic and social benefits of the optimized agricultural anti-forest were obviously improved before optimization, which played a good role in the sustainable and stable development of shelterbelts in the farmland of Northeast China.