Based on the theory and practice, 28-word strategy of the land improvement of loess plateau and the concept of conservational eco-agriculture were presented.

• 根据黄土高原小流域治理理论与实践,提出了黄土高原国土整治的“28字方略”及水土保持型生态农业概念;研究了小流域生态系统健康评价方法及指标体系。