单词 | Soil erosion |
例句 | 1. Crop rotation helps prevent soil erosion. 2. Soil erosion was mitigated by the planting of trees. 3. Tree cover would prevent further soil erosion. 3. is a online sentence dictionary, on which you can find good sentences for a large number of words. 4. The area is plagued by soil erosion and flooding. 5. They also harbour wildlife and help prevent soil erosion. 6. Poor farming methods have contributed to increased soil erosion. 7. Is soil erosion really a problem? 8. In addition, the scale of measurement over which soil erosion occurs affects the measurement itself. 9. Even an innocent-looking cup of coffee creates soil erosion because of over-production on coffee plantations, and chronic water pollution during processing. 10. For agriculture, the most significant result of accelerated soil erosion is a reduction in productivity. 11. Without the trees, soil erosion in the area accelerated rapidly. 12. Pollution, mining, uncontrolled tourism and soil erosion caused by logging are to blame. 13. However the methodologies in assessing soil erosion hazard, as well as policy instruments, may well not be applicable outside the United States. 14. In many instances this is too late to obviate desertification and soil erosion. 15. Constructing rows of turbines in strategic areas could reduce soil erosion and help to phase out the use of wood for fuel. 16. We infer that they accumulated during periods of accelerated soil erosion. 17. Although the increase in rainfall would aid irrigation, it would add to the problems of soil erosion and nutrient leaching. 18. Trampling of vegetation is one of the most widespread environmentally degrading repercussions of recreation and can also lead to excessive soil erosion. 19. The main purpose of the list is to illustrate complexity and variety of political-economic and physical circumstances of soil erosion. 20. Three different ways can be identified in which piecemeal improvements to the conceptualisation of the soil erosion problem have been transcended. 21. The question arises as to why there is so little official action to combat soil erosion. 22. More trees are being planted for timber and to prevent soil erosion. 23. Usually the classes and groups most adversely affected by soil erosion are politically weak, disunited and spatially separated. 24. In 1983 Lewes District Council spent £12,000 to alleviate the effects of soil erosion on a housing estate. 25. This quotation is one of the very few places in his work where he actually mentions soil erosion. 26. There are problems related to the complex and varying manner in which symptoms of soil erosion appear through time. 27. In conclusion, there is a wide variety of social and physical contexts of soil erosion. 28. One subject studied relatively little by physical geographers has been the occurrence of soil erosion. 29. At this point the discussion shifts to the question of ideology in assessing the importance of soil erosion. 30. Many of these areas also suffer from extremely serious soil erosion, although reports and impressions seem to differ. 1. Crop rotation helps prevent soil erosion. 31. Massive soil erosion and disruption of the natural drainage pattern destroyed the land's productivity. 32. Soil erosion is a main contributor to water pollution. 33. Severe deforestation has accelerated soil erosion and reduced productivity. 34. China's Yellow River Basin, soil erosion is very serious. 35. Essentially , soil erosion is the key causing rocky desertification. 36. The value of R, erosive force of rainfall, is the best index judging soil erosion, and is also one of the basic factors used for setting up prediction model of soil loss. 37. The third major indirect cost of soil erosion is the loss of navigability. 38. The authors discovered that the sharp plough decrease, soil fertility decline, soil pollution, water and soil erosion and sandiness are primary problems at present through investigation and analysis. 39. As a result of in arid, semi-arid climatic zone, soil erosion and sediment deposition in Iran are very serious and have become one of main problems influencing national development. 40. El Salvador has earned the dubious distinction of having the worst soil erosion in continental America. 41. Short - sighted action of lumbering in a destructive manner destroys vegetation, and causes soil erosion. 42. The soil erosion is a complex geomorphological process caused by the endogenic and exogenic force. 43. The soil erosion in the alluvial gold deposit is serious because of the vegetation destroyed. 44. Droughts and accentuation of soil erosion cause havoc in such areas ,() making their rehabilitation extremely difficult. 45. Because of the terrain and physiognomic characteristics of basins in ka rst areas, soil erosion and water reserve in basin bottom are severe. 46. The Honghe River basin suffers from low plantation coverage and water and soil erosion. 47. First, soil erosion modulus can be estimated by using water erosion model, and the maps of soil density and soil horizon thickness can be derived from soil detailed survey data. 48. Urbanization may cause the change of fluvial geomorphological process system and aggravate the soil erosion and the flood threat. 49. The results show that: the soil erosion of wind power field construction region is intercoupling with particularity of wind power field and characteristics of soil erosion of Bashang region. 50. Tillage erosion is a new field of soil erosion research. 51. Soil load estimation is one of the key issues in soil erosion research. 52. In the first stage of the study period talked above, some passive human activities such as deforest and reclamation accelerated soil erosion and resulted in more soil and water loss in this period. 53. INAA techniques of tracing REE applied to studies of soil erosion has been introduced in this paper. 54. High accuracy DEMs is an important data in study of soil erosion and terrain feature space analysis. 55. Under the immense population pressure, serious soil erosion emerged because of the over-exploitation of natural resources in the Southern mountainous areas in the Qing dynasty. 56. The buck-toothed creatures helped extinguish nearly one-eighth of Australia's native mammal species and led to the extinction of countless numbers of plants, leading to widespread soil erosion. 57. GIS software is utilized to index resulting data and to extrapolate soil erosion sensitivity analysis. 58. Soil erosion and non - point source pollution are two serious environmental issues. 59. Soil erosion by rain and wind is a serious problem here. 60. There are many problems in the ethnic regions of western Sichuan Province, such as seismic active zone, serious water and soil erosion, fragile eco-environment, low level of economy, etc. 61. The long - term social threat posed by uncontrolled soil erosion raises profound questions of intergenerational equity. 62. Properly managed forests prevent flooding and soil erosion, and stabilize climatic conditions. 63. We can use soil erosion model and nomogram to calculate soil erodibility. 64. Universal Soil Loss Equation (USLE) is an empirical model widely used in the domain of soil erosion by water. 65. The characteristic of soil erosion in the eastern part of Guizhou were expounded. The primary questions are the petridesert in karst area and the soil erosion in tung tree forest region. 66. What it really means is "no moldboard plow" and because of that we are supposed to believe that farmers are controlling soil erosion. 67. Therefore, in order to construct the first defense line for soil erosion, low benefit value zone which locates in Kuyehe River basin and Huangfuchuan River basin is commanded to be selected firstly. 68. Drought and soil erosion had long been a major problem. 69. Soil erosion load estimation is one of the key issues in soil erosion research. 70. Because the soil and water conservation factor was not concluded in net method, the soil erosion modulus calculated with net method was higher than that calculated with sampling survey method. 71. Especially in the near decades, these reasons result in a series of ecological problems, such as pasture retrogression, vegetation sparsity ,() soil erosion and dust devil. 72. It was found that soil erosion resistance increased with the number of plant roots, though no consistent quantitative functional relationship was observed between them. 73. Soil erosion and disasters of flood and waterlog, ground degeneration resulting from it have become the limiting factors for harmony developments in karst areas. 74. The development of the soil erosion model can be divided into empirical model, physical process model and distributed model period. 75. Land resources are dwindling because of water loss and soil erosion. 76. The results reveal that land desertification, steppe degeneration, secondary soil salinization or alkalization, soil erosion and air pollution in urban areas are the most serious entironment problems. 77. Results show that soil and water conservation measures have played an important role and soil erosion prevention and control reach the target value. 78. The rock physics mechanics property is bad, weathering and the soil erosion are mightiness. 79. Nongzhong loess hilly a brittleness ecology environment with a sparse vegetation cover and severe soil erosion. 80. The erosive rain is defined as rain, which can cause soil erosion. 81. The best way to undo the problem of soil erosion is to reforest the cultivated land. 82. Soil erosion which is called"peristaltic disaster"is one of the most common and the strongest geological disaster in human society nowaday. 83. For these areas, terracing or strip cropping could be suitable to reduce soil erosion . 7. 84. The low resistant erosion ability of ground substance, especially in granite weathering crust and purple rock and its soil are the inner causes of severe soil erosion. |
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