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- Qin H L, Gao W S, Ma Y C, Yang S Q, Zhao P Y.Effects of no-tillage on soil properties affecting wind erosion during fallow in ectone of north China. 秦红灵;高旺盛;马月存;杨世琦;赵沛义.;免耕对农牧交错带农田休闲期土壤风蚀及其相关土壤理化性状的影响
- Abrasion also abets wind erosion. 磨损作用也助长了风的侵蚀。
- The pipe engineering could increase the wind erosion and worsen the soil nutrient. 管线施工会增加地表风蚀量,并影响土壤养分和水分状况。
- The total soil erosion area in the whole country is 3.56 million km2,water erosion being 1.65 million km2 and wind erosion area 1.91 million km2. 全国水土流失总面积356万平方公里。其中水蚀165万平方公里,风蚀191万平方公里。
- Aeolian sand, distributed extensively around China?s arid and semi arid zones, is the main bearing body of wind erosion in China. 风成沙广泛分布于我国干旱与半干旱地区,是我国风蚀与风沙活动的主要载体。
- The extracted tree rows and hedges can be used to update the GIS database, to derive wind erosion risk fields for soil monitoring and preservation. 所提取的行树与篱笆信息可以应用于gis数据更新、土壤监测与保护、风侵蚀的危害计算等。
- The total soil erosion area in the whole country is 3.56 million km2, water erosion being 1.65 million km2 and wind erosion area 1.91 million km2. 全国水土流失总面积356万平方公里。其中水蚀165万平方公里,风蚀191万平方公里。
- Stubble strip of conservation tillage can lower wind velocity, conserve water and soil, resist wind erosion and protect strip ploughed land. 这种措施既能发挥保护性耕作带残茬降风速、保水土、抗风蚀的作用,并对翻耕带形成保护;
- The forecasting of those soil and water losses types such as water erosion, wind erosion, gravity erosion and mudflow should be paid equal attention. 对水土流失中水蚀、风蚀、重力侵蚀、泥石流等应同样认真预测;
- Study on Soil Wind Erosion and Vegetation efficiency of Wind and Prevention Sand Resistance Artificial Vegetation at Sand-Land in Yongding River in Beijing. 北京市永定河沙地土壤风蚀与人工植被防风阻沙效益研究。
- Research on soil resistance to wind erosion is very few in our country, this is very adverse to soil erosion prevention and cure and soil erosion evaluation. 但是我国对土壤抗风蚀能力的研究还几乎是一片空白,这对土壤风蚀防治和评价等工作的开展都是极其不利的。
- However, 70 X 104 km2 of grassland became sources of sand dust because of soil wind erosion, which account for 30.4% of all sand dust sources, and 38% of all grassland in China. 但有近75万km~2的草地发生风力侵蚀并为沙尘暴提供物质来源,占总物质来源地的30.;4%25,占全国草地面积的38%25。
- Soil with higher clay content has the higher capability preventing soil from wind erosion than one with less clay content under the together action of PAM and water. 在水分和PAM的共同作用下,黏粒含量高的土壤的抗风蚀能力要强于黏粒含量低的土壤。
- Weakly coherent surfaces are more susceptible to sheet and wind erosion. 粘着不牢的表面对片状侵蚀和风蚀更加敏感。
- At 17 o'clock on on the 29th, the center moved to Sanya City in Hainan Province, about 180 km south-east of the sea, near the center of the largest wind 8 to 20 m / s wind speed. 29日17时,其中心移到海南省三亚市东南方约180公里的海面上,中心附近最大风力8级,达到20米/秒的风速。
- The soil straw cover of farmland is a main method to prevent the soil and water erosion,it is very important to research the relation between the straw cover and the wind erosion. 农田地表秸秆覆盖是防止水土流失的一项主要措施,研究秸秆覆盖度与土壤风蚀、水蚀的定量关系对农田采取合理的覆盖形式有重要的指导意义。
- Wind erosion is an environment process of soil particle movement forced by wind, including the sub-processes of soil particle entrainment, space transportation and deposition. 摘要土壤风蚀实质上是土壤颗粒在风力作用下发生位移的自然过程,它包含了土壤夹带起沙、空间输移及沉降淀积等三个阶段。
- Conclusion The eye?s wound while the vision sensitive and visual field maybye express pathology change. 本文提示外伤性青光眼及眼眶骨折应常规检查视野,以了解视神经是否受损害。
- Let' s wind up the plans. 让我们把这些计划订完吧。
- The total area of the soil erosion has reduced from 3.67 million km2 in late 1980s to 3.56 million km2 in late 1990s, with 110000 km2 reduced in ten years, among which, water erosion reduced by 140000 km2 and wind erosion increased by 30000 km2. 全国水土流失总面积由20世纪80年代末的367万平方公里减少到90年代末的356万平方公里,10年间减少了11万平方公里,其中水蚀减少了14万平方公里,风蚀增加了3万平方公里。