2) slope soil erosion
坡面土壤侵蚀
1.
Based on the complex nonlinear characteristics of slope soil erosion, method of artificial neural network was used, and three-layer feed-forward back-propagation network model for slope soil erosion in different tillage measures (contour tillage, manpower digging, manpower hoeing, linear slope) was established.
基于坡面土壤侵蚀产沙的复杂非线性特性 ,引用 3层前馈型BP网络建模方法 ,对不同耕作措施坡面土壤侵蚀产沙进行模拟 ,模型输入层变量数为 5个 ,分别代表降雨强度、坡度、坡长、土壤前期含水率和土壤容重 ,输出层变量为次降雨土壤侵蚀产沙量 ,并利用野外人工模拟降雨试验所得到的不同耕作措施 (等高耕作、人工掏挖、人工锄耕和直线坡 )坡面土壤侵蚀产沙实测资料 ,对网络进行模拟训练和预测 ,取得了较好的结果。
3) slope erosion
坡面侵蚀
1.
The slope erosion is the original zone of water and soil loss and water and soil on slope must be treated quickly.
坡面侵蚀是水土流失的源区 ,有必要加快坡面水土治理。
2.
According to observation data and the outcomes of artificial rainfall in Wangjiaqiao basin, based on erosion mechanics mechanism, two concepts of slope erosion and basin erosion are distinguished grimly and soil erosion models of slope and small watershed have been established.
根据王家桥流域观测资料及人工降雨实验成果,从侵蚀力学机制出发,严格区分了坡面侵蚀与流域侵蚀两个不同的概念,建立了坡面侵蚀模数和流域侵蚀模数。
3.
There is serious slope erosion when the railway or road is constructed in granite region in southern China where ecological environment and engineering conditions is weak area in.
南方花岗岩地区是生态环境和工程条件脆弱区之一,铁路公路穿过时,常常存在较为严重的坡面侵蚀问题。
4) slope surface erosion
坡面侵蚀
1.
It is considered that the slope surface erosion is the inducing and promoting factor of the gradual destruction of the loess slope in long-term rainfall wash and infiltration,whose surface is exposed and within which is the slippage interface.
分析了斜坡坡面遭受天然降水与人类活动的侵蚀破坏对坡体稳定性的影响,认为坡面裸露的黄土边坡在长期的雨水冲刷与入渗情况下,坡面侵蚀破坏成为滑动面位于土层中的黄土边坡渐进破坏的诱发与促进因素。
2.
From the following four aspects: drag forces, velocity, energy and sediment carrying capability of slope surface flow, the threshold gradient of slope surface erosion in the granite area in the south of china is discussed, and it is obtained the critical slope gradient is from 35 to 43 degree.
从坡面流拖曳力、流速、能量及挟沙力4 个方面,分析了南方花岗岩地区坡面侵蚀临界坡度,得出其临界坡度为35~43
5) Soil erosion
坡面侵蚀
1.
However, soil erosion and seasonal drought are major constraint for sustainable agriculture due to improper land use and uneven distribution of .
研究结果有助于深入了解坡面侵蚀机理,为泥沙输移模型开发提供必要的土壤参数。
6) overland flow erosion
坡面流侵蚀
补充资料:黄土坡的婆姨们
黄土坡的婆姨们
故事片。北京电影制片厂1988年摄制。
黄土坡村实行土地承包后,大家各显 神通,青壮劳力均外出挣钱,村里只 剩下一些婆姨们和老弱病残者。青年 妇女常绿叶的丈夫乐大同把替人开汽 车赚来的五千元钱交给妻子,准备再 攒点钱造一幢新房。然而春耕即将来 临,没有牲口和劳力,怎么办?常绿 叶说服公婆,用五千元钱买回一部小 型拖拉机和一些配套农具,带领婆姨 们组成承包联合体。在余技术员的热 情帮助下,她们克服了种种困难,实 行科学种田。当乐大同回家取款,准 备自己跑运输时,听说妻子用钱买了 拖拉机,便大打出手,还准备卖掉拖 拉机。乐大爷闻讯前来阻止,并让大 同向媳妇赔礼道歉。婆姨们的辛勤劳 动终于赢得了粮食丰收,但粮站因库 房漏雨不收新粮,常绿叶便想办一个 粮食加工厂。为集资办厂,她到各家 各户动员。然而,只顾乡镇企业,不 顾农业生产的乡长,为办铸造厂,竟 不征求大家同意,将大家在信用社的 存款全部移作铸造厂的投资,强迫入 股。常绿叶和婆姨们对此无法忍受, 她们到县委告状,要求支持发展农业 。她们的合理要求得到了满足。本片 获广播电影电视部1988年优秀影片奖 。 编剧: 马烽、孙谦 导演: 董克娜 摄影: 颜军生 美术: 王继贤 作曲: 陆祖龙 扮演者 剧中人 扮演者 剧中人 李克纯 常绿叶 李宗伦 乐大同 赵子岳 乐大爷 黄宗洛 乡 长
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