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本文以具有北方半干旱山区代表性和典型性的隋家窝铺小流域为例，在简要分析了生态系统退化的现状、特征和原因的基础上，根椐生态经济学原理，提出了退化小流域生态系统重建与农业资源开发的原则、方向、途径及措施。通过５ａ的实践，在生态经济沟、防护林体系、人工草地、抗旱农田和高产栽培示范区等建设中取得了明显的生态和经济效益。
In this paper, taking Suijiawo small watershed, which is representative and typical of northern semi-arid mountain, as an example, based on a brief analysis of the status quo, characteristics and causes of ecosystem degradation, based on the principle of ecological economics, Principles, Directions, Ways and Measures for Rebuilding Ecosystems and Exploiting Agricultural Resources. Through the practice of 5a, significant ecological and economic benefits have been achieved in the construction of eco-economic ditch, shelterbelt system, artificial grassland, drought-resistant farmland and high-yield cultivation demonstration area.