This paper focuses mainly on the correlation between different terrain factors and the mean-slope by means of the Back Propagation model of Neural Network with a latent layer.
文章以黄土高原丘陵沟壑区的15个样本地区为实验样区,以高分辨率、高精度的1∶1万比例尺DEM为基础数据,应用BP神经网络模型,探讨地形定量因子与地面坡度之间的关联性特征,并将神经网络的方法与传统的多元回归方法进行比较。
By adopting the ground slope drawing from high accuracy digital elevation model (DEM) based on 1∶10 000 relief map with 5 m spatial resolution as criterion, and by using ground instrumentation and mathematical statistics and comparative analysis as methods, a study is made on the error character a.
试验以 1∶1 0 0 0 0高精度地形图的 5m空间分辨率DEM(数字高程模型 )所提取的地面坡度为准值 ,运用GIS、数理统计和比较分析等方法 ,研究基于 1∶5 0 0 0 0地形图的 2 5m空间分辨率DEM所提取地面坡度的误差特征与纠正方法 。
Taking Nanjing Zhongshan Area as an sample,we analyzed the variation rules of the area errors of slopes derived from DEM with different resolution and got the linear relationship between the indexes of the total error of average area percentage and different resolutions.
分析了不同分辨率所提取地面坡度面积误差变化的规律,建立了坡度面积百分比平均误差与分辨率的线性函数关系,实例验证了其可由已知误差求得所需比例尺的分辨率范围。
And the generation process of runoff and sediment erosion and the hydrodynamic characteristics of flow on grass slope were quantitatively studied.
试验结果表明,草地与裸地坡面土壤入渗过程均符合Horton入渗公式,且裸地坡面土壤入渗率约为草地的45%;草地坡面含沙率平均值较裸地减少70%左右、输沙率减少80%左右、径流系数减少30%左右;裸地与草地坡面流雷诺数Re均属于层流范畴,当坡面径流量较小时,裸地和草地坡面流的雷诺数和弗劳德数属于层流中的缓流范畴,当坡面径流量进一步增大,裸地坡面径流属于过渡流急流流态;草地和裸地坡面径流深没有明显差异,草地坡面径流流速明显较裸地低,而且Darcy-weisbach阻力系数f和曼宁糙率系数n的平均值分别是裸地的3。
Histogram matching based downscaling model of slope spectrum:A case study in Jiuyuan watershed of northern Shaanxi;
基于直方图匹配的地面坡谱尺度下推模型研究——以陕北韭园沟样区为例
The Uncertainty of Slope Spectrum Derived from DEM in the Loess Plateau of Northern Shaanxi Province;
基于DEM的陕北黄土高原地面坡谱不确定性研究
The ground drops sharply near the shore.
近海边的地面坡度很大。
Effect of Slope Gradients on Soil Erosion Process in Red Earth Hillslopes
地面坡度对红壤坡面土壤侵蚀过程的影响研究
Experimental Research on the Impacts of Ground Slope on the Runoff of Turf;
地面坡度对草坪径流的影响试验研究
The relation between outcrop width and thickness depends on the dip of the bed, the slope of the ground, and the direction of traverse.
露头宽度与厚度的关系取决于岩层的产状、地面坡度和路线方向。
The size of inpidual basins will-generally depend on the slope of the land surface, except in relatively flat plains such as valley floors.
除了相对平坦的平原（如谷底），每个池塘的大小一般取决于地面坡度。
Modeling Slope Uncertainty Derived from DEMs in China Loess Plateau
黄土高原数字高程模型提取地面坡度的不确定性模拟
On Relatively Balance Gradient on Granite Mountain Slopes of Upper and Middle Reaches of the Yangtze River
长江中上游花岗岩山地坡面相对平衡坡度研究
The general slope of a region.
坡度一个地区的总坡度
They slope the grind so that the water can run away.
他们将地面铺得有坡度以便水能流泻。
They sloped the ground so that the water can run away.
他们将地面铺成坡度以便水能流泻。
The steeper the pitch, the more effective the roof is in quickly disposing of rainwater or snow.
屋面的坡度越陡,则越能有效地排卸雨雪。
Realization of Data Filtering in DTM Using Slope Difference
利用坡度差在数字地面模型中过滤数据的实现
Effects of landforms on α biopersity in slope scale
坡面尺度上地貌对α生物多样性的影响
Influence of Slope Gradient and Rainfall Intensity on Infiltration in Sloping Farm Land
坡度和降雨强度对坡耕地入渗的影响
The floor of the cinema has a slope of two meters from the back seats to the front.
这电影院的地板从后面座位到前面有两米的坡度。
THE MATCH RELATIONS BETWEEN SUNRISE AND SUNSET HOUR ANGLES OF SLOPE SURFACES WITH SLOPE AZIMUTH AND SLOPE GRADIENT
坡面日出日没时角的配置关系与坡向坡度
Not all marginal-marine land surfaces have the same slope, nor are they always smooth.
在海缘区附近的所有陆地表面并没有一致的坡度，也不都是规整的。
Study on the Effect and Change Characteristic of Soil Surface Roughness during the Course of Water Erosion;
坡面水蚀过程中地表糙度的作用及变化特征研究