| 1. | Research progress on ephemeral gully erosion process and its prediction model 浅沟侵蚀过程及预报模型研究进展 |
| 2. | Effect of topography on ephemeral gully erosion in northeast china with black soils 东北漫岗黑土区地形因子对浅沟侵蚀的影响分析 |
| 3. | Gully erosion gullying 冲沟侵蚀 |
| 4. | Experimental study on upslope runoff effects on ephemeral gully erosion processes at loessial hillslope 黄土坡面汇流汇沙对浅沟侵蚀影响的试验研究 |
| 5. | The region of flow produce is loose embankment and the flat roof , the gully erosion chain is the main cause of the sediment yield increase 弃土场内主要的产流区域为松散边坡和平台,坡面的侵蚀链是造成区域内产沙量增加的主要原因。 |
| 6. | The developments of industry and agriculture have been badly restricted for the severe gully erosion in the gentle hilly black soil regions in northeast china 摘要东北黑土漫岗区侵蚀沟发育广泛,侵蚀沟的发展已经严重影响到了该区工农业生产的发展。 |
| 7. | On the base , the gully erosion process , the gully erosion developing condition and the interactivity between sheet erosion and gully erosion have been described 在此基础上,对侵蚀沟由顺犁沟发展至槽沟的发展过程、发展条件,以及面蚀与沟蚀的发展转化关系进行了阐述。 |
| 8. | Generally the rainfall on steeplands may be no more erosive than that on nearby lowlands , the resulting runoff and eroded sediments will move much more quickly on steep slopes , and will provoke more severe rill and gully erosion ( source : fao soils bulletin 75 ) 通常坡地的降雨侵蚀比附近的低地更严重,这样坡地的流失物和侵蚀的沉积物移动更快,引起河流侵蚀。 |
| 9. | 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。 |
| 10. | The research results mainly show : ( 1 ) the ecological degradation characteristics of wuxi county include : some soil is thin and barren and its water and fertility conservation abilities are poor , gradual degradation of soil results in decrease of vegetation diversity and the vegetation community structure gradually inclines tc simplicity from complexity . the types of soil and water loss in wuxi county mainly involve surface erosion and gully erosion . according to investigation , surface erosion area occupies 80 % or so or erosion area , in which the slope farmlands surface erosion area accounts for about 70 % of farmland erosion area 研究结果主要包括: ( 1 )巫溪县生态退化特征表现:作为生物生长基质的部分土壤薄而贫瘠,保水保肥能力差,部分地区基岩裸露,土壤的不断退化导致植物种多样性减少,植物种群结构逐步由复杂趋向简单化;县内水土流失的类型主要包括面蚀和沟蚀两大类,据调查,面蚀面积占侵蚀总面积的80左右,其中坡耕地面蚀占耕地侵蚀面积的70左右。 |