Bioengineering is a technical option which uses selected biological elements to retain soil and rehabilitate areas with gullies. With this aim, bioengineering practices were implemented to recover areas affected by gully erosion in a micro-watershed located in the Mixteca, an important region in the Mexican state of Oaxaca. The restoration plan was to rehabilitate an old stone check dam located in the lower part of the watershed and the establishment of live barriers with Erytrina americana Miller, upstream in the main gullies contributing to the drainage system. To assess the morphometry of the micro-watershed, a digital elevation model was generated by a drone. To assess the efficiency of rehabilitation practices, the volume of sediments retained by the structures was quantified by topographic surveys. Results show that the live barriers combined with the check dam retained as sediments weight 1,304.99 Mg. As the micro-watershed area is 37.06 hectares, without bioengineering structures, the specific degradation would have reached 35.27 Mg ha⁻¹y⁻¹. Thus, sediments retention obtained with the bioengineering system has proven to be efficient in decreasing waterflow speed and initiating the rehabilitation of gullied lands.

生物工程是一种技术选择，它使用选定的生物元素来保留土壤并修复有沟壑的区域。为了实现这一目标，已实施生物工程实践，以恢复位于墨西哥瓦哈卡州重要地区米什特卡的一个小流域中受沟壑侵蚀影响的地区。修复计划是修复位于分水岭下部的旧石制检查坝，并与美洲刺桐建立活动屏障。米勒，在主要沟渠的上游，为排水系统做出了贡献。为了评估微流域的形态，无人机生成了数字高程模型。为了评估修复实践的效率，通过地形调查对建筑物保留的沉积物量进行了量化。结果表明，与屏障坝相结合的活动屏障保留了沉积物重量1,304.99 Mg。由于微流域面积为37.06公顷，如果没有生物工程结构，其具体降解将达到35.27 Mg ha ^-1 y ^-1。因此，事实证明，利用生物工程系统获得的沉积物滞留在降低水流速度和启动沟壑恢复方面是有效的。