Small catchment are basic management units in the flash flood disaster control planning (FFDCP) in China.
在进行全国山洪灾害防治规划中，小流域是基本工作单元。
2
Abstract: The effect of erosion control by agroforestry is an essential factor of little catchment planning.
摘要：农林复合系统的侵蚀控制效益是在小流域整治规划中必须考虑的重要因素。
3
Pollution total quantity control in the catchment area of municipal waste water treatment plant should avoid the repetitive treatment of municipal wastewater treatment plant.