水蚀模数 meaning in English

specific degradation

Gully erosion , which is universal on original lands , but also the special forms , for example , hole erosion gravel erosion debris slide and debris flow , which is unusual in loess area , ( 2 ) based on a long - term fixed point experiments in proving ground of the south stackpile , the soil erosion factors have been researched quantitatively , the runoff and erosion affected factors have been made sure and the experiential models of producing water and soil have been taken in newly - constructed stage , early stage and later stage of reclamation
确定南排土场原地貌的水蚀模数为3700 4400t km ~ 2 ? a ；在排土场新造地貌上，击溅、面蚀、细沟侵蚀、浅沟侵蚀、沉陷侵蚀、砂砾化面蚀、土砂泻溜和坡面泥石流等水土流失形式出现频率和发生程度都明显强于原地貌。 ( 2 )以南排土场径流试验场长期的定位观测为基础，对排土场未复垦时期、复垦初期、复垦后期的土壤水蚀影响因子进行定量研究，确定了径流和土壤水蚀的主要影响因子及其临界值，建立了产流产沙的经验模型。