Based on 3 years locating and semi-locating observation, the amount of soil loss in runoff from yellow soil of hilly areas by de farming and reafforestation in Guizhou province.

• 通过3年定位、半定位观测,对贵州山区退耕还林(草)地进行采样并采用无界径流小区法收集地表径流样品,探讨贵州山区退耕还林(草)措施对贵州山区土壤养分流失以及水土保持效益的影响。