In order to study the water & soil keeping effect at hillside lichi garden applied with water-saving technology,a contour line planting and plantcover experiment was conducted and the results show that this technology can keep water,reduce water & soil erosion and increase the water content in 0～40cm layer of soil from Feb.
为了探索节水技术对坡地荔枝园的水土保持效果,在坡地荔枝园实施等高种植和植物覆盖的节水技术集成试验,结果表明:节水技术集成能涵养水分,减少水土流失,在2~9月份提高0~40cm土层的含水量3。
The principle of equal-distance and equal-height electromagnetic distance measurement for triangulated height surveying is introduced in this paper.
介绍了等距等高电磁波测距三角高程测量的原理,详细深入地分析了这种高程测量方法的精度,通过计算和作图表示,可直观地反映在不同条件下的精度变化情况,讨论了代替国家等级水准测量的范围和条件,可供生产实际和进一步研究参考。
Research on contour lines automatic processing in digital topographic survey;
数字地形测量等高线自动处理问题探讨
The grid-fractionizing model based on the reconstructed contour lines;
基于重构等高线的格网细化模型
The modeling and analysis of accuracy for LOD model based on reconstructed error of contour lines;
基于等高线重构误差的LOD建模及精度分析
The research of draw contour by the general digital image to making use of the DLT algorithm;
利用DLT算法实现普通数码影像绘制等高线方法研究
Contour paradox and modification of contour definition;
等高线悖论及等高线定义的修改
Implementation and application of voltage contour based on Arc/info;
基于Arc/info的电压等高线的实现及应用