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- Control Effect of Grass Strips of African Green Bristlegrass on Runoff and Soil Loss in Sloping Fields 非洲狗尾草防治坡耕地水土流失效应的研究
- runoff and soil loss 径流和土壤流失
- Based on chemical conservation laws and water balance equations, this model can study the chemical loss in whole mixing layer including the ponding runoff and soil mixing layer. 在溶质质量守恒和水量平衡的基础上,将土壤混合层和积水径流混合层作为研究对象,得到解析解。
- Based on chemical conservation laws and water balance equations,this model can study the chemical loss in whole mixing layer including the ponding runoff and soil mixing layer. 在溶质质量守恒和水量平衡的基础上,将土壤混合层和积水径流混合层作为研究对象,得到解析解。
- The runoff and sediment yield is affected by the process of rainfall and the function of water and soil conservation measurement. 弃土场区域内产流受到降雨特征和水保措施功能发挥的影响。
- People plant trees on stark hill in order to deline the water and soil loss. 人们在荒丘上种植了树木以减少水土流失。
- People planted trees on the waste hills to decrease water and soil loss. 人们在荒丘上种植了树木,以减少水土流失。
- The results show that the factors of basin covers, underlying surfaces, and water and soil conservation play important roles in regulation of runoff and guarantee of quality of water sources. 通过分析可以看出:流域植被、流域下垫面及水土保持等因素不仅对调节径流量起重要作用,对保证水源质量也起重要作用。
- High rain intensity tended to undermine penetration of rain water in soil and thus reduced soil moisture.At the same rain intensity, flat cultivation produced maximal surface runoff and soil erosion. 在耕作方式相同时,雨强越大,地表径流量越大,地下径流量减少,总径流量增加,不利于土壤保蓄雨水和含水量的提高。
- Contrastively, due to complicated types and high intensity, man-made erosions were main water and soil loss hazards in Guangzhou city. 人为侵蚀的成因主要有:采石取土、交通道路建设、开发区建设以及坡耕地。
- Applying a redesigned index of land use structure,the effect of land use structural change on water and soil loss in Wusuli River basin was analyzed. 不合理的土地利用结构是导致我国一些河流水土流失乃至河流改道的重要原因之一。
- Corn straw cover is to use crop straw to cover the earth surface, which is a dry farming measure to solve soil, fertilization and water and soil loss control. 摘要玉米秸秆覆盖是利用作物秸秆覆盖地表,解决保土、培肥和控制水土流失的一项旱作农业耕作措施。
- Soil loss is a function of six factors, i. e. rainfall, soil erodibility, slope length and steepness, crop and soil management(Wischmier and Smith,1978). 土壤流失是6项因子的函数,即降雨、土壤耐蚀性、坡长和坡度以及作物和土壤管理(Wischmier和Smith,1978)。
- Check dam is the main measure for soil and water conservation, and its benefit in water and soil loss is remarkable, especially in the most seriously eroded first sub-region of hilly-gully Loess Plateau. 摘要淤地坝是水土保持治理的主要措施之一,特别是在水土流失最为严重的黄土丘陵沟壑区一副区,其效益更为突出。
- The establishment of ecological agriculture obviously improves agricultural ecological enviornment, measures barren hill and slope, greatly enhances silvan cover, so as to control water and soil loss. 生态农业建设使农业生态环境得到明显改善,荒山荒坡得到治理,森林覆盖率大幅度提高,水土流失有所控制。
- We also should build reservoirs ,change the land into terraced fields,plan reasonably and combine the biological methods with project methods in order to control the water and soil loss. 水土流失是我国当前突出的生态环境问题,文章以合肥大房郢水库流域水土流失为例,揭示小流域水土流失对环境的危害性,提出相应的防治措施和合理化建议。
- The author expounded the situation and harms of different rocky water and soil losses in Ningdu county eroded area. 论述了宁都县侵蚀区不同岩性水土流失现状和危害,并对成因及发展趋势进行了分析。
- The slow movement of rock debris and soil down a weathered slope. 蠕动岩石碎片和土壤沿着受风雨侵蚀的滑坡向下缓慢移动
- But stover protects against soil loss to wind and water. 但是柴火能让土地保留风和水。
- The loss of water and soil was most serious in this area . 这个地区水土流失最严重。