生物措施,简单地说就是采取一定的方法,在需要保护的坡面种植植物,包括造林、种草、封沙育林育草等措施。与工程措施和耕作措施相比,生物措施具有治根治本、成效显著等优点,目前已被广泛应用于小流域综合治理、退化生态系统恢复重建等领域。近年来,随着生态环境建设与退耕还林还草政策的深入实施,生物措施在小流域综合治理中所起到的关键作用日益明显,主要表现在: Biological measures, to put it simply, take certain measures to plant plants on the slopes that need protection, including afforestation, planting of grass, sand sealing and afforestation, and other measures. Compared with engineering measures and tillage measures, biological measures have the advantages of radical cure and significant results. They have been widely used in such areas as comprehensive management of small watersheds and restoration and reconstruction of degraded ecosystems. In recent years, with the deepening implementation of the ecological environment construction and the policy of returning farmland to forests and grasslands, the key role played by biological measures in the comprehensive management of small watersheds has become increasingly obvious. The main features are as follows: