助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   topographic variables 的翻译结果: 查询用时:0.007秒
图标索引 在分类学科中查询
所有学科
自然地理学和测绘学
计算机软件及计算机应用
植物保护
生物学
更多类别查询

图标索引 历史查询
 

topographic variables
相关语句
  地形变量
     Aspect among topographic variables had an important influence on TN content. The correlations with TN content and parent rocks, elevation, aspect were positively significant (P<0.05),The correlation with slope and TN content was no significant.
     地形变量中坡向对土壤TN含量影响最大,TN含量和母岩、海拔、坡向存在着正相关关系,坡度和TN含量的相关关系不明显。
短句来源
  地形因子
     Taking Jiuyan area, from Suide county Shanxi Province P. R. China, as a test area and ARC/VIEW 3.1 as a main working platform, the results show different errors can be found in all three topographic variables, such as slope gradient, aspect of surface and accumulation.
     样区为陕北绥德县韭园沟流域,基本技术平台为ARC/VIEW地理信息系统软件,研究结果表明,在该地区内,利用1:50000DEM所提取的降水累积量、地面坡度、地面坡向3种地形因子都不同程度地存在着误差。
短句来源
  “topographic variables”译为未确定词的双语例句
     Slope is the most important topographic variables. It is a critical work to establish a scientific and reasonable slope classification systems for terrain research and slope mapping.
     地面坡度是最重要的地形定量指标 ,建立科学合理的地面坡度分级体系是对坡度进行科学研究与坡度图制图必不可少的重要环节。
短句来源
     A series of experiments was made to investigate the accuracy of topographic variables derived from DEMs of 1∶50 000 map scaled and with a 5m horizontal resolution by means of a carefully comparison with 1∶10 000 scaled DEMs of the same area.
     运用比较分析与数理统计的方法,以1∶1万DEM为基准,探讨在黄土丘陵沟壑区以1∶5万地形图为基础所建立的数字高程模型描述地表形态的精度特征。
短句来源
     Soil organic carbon and topographic variables have correlations. In topsoil(0-20cm), the correlations of aspect and the content of soil organic carbon is positively significant while that of elevation and the content of soil organic carbon is highly significant.
     土壤有机碳含量深受母岩、植被和地形影响 ,在表层 (0~ 2 0cm) ,坡向和有机碳含量呈显著正相关关系 ; 海拔与有机碳含量呈极显著正相关关系 ;
短句来源
     A series of experiments ware made to investigate the accuracy of topographic variables derived from DEMs of 1: 50000 map scaled and with a 5m horizontal resolution by means of a careful comparison with 1:10000 scaled DEMs of the same area.
     运用比较分析与数理统计的方法,以1:10000DEM为基准,探讨在黄土丘陵沟壑区1:50000地形图所建立的数字高程模型描述地表形态的精度特征。
短句来源
     Applying information theory, mathematical statistics and comparative laws as a basic research methodology and 1:10,000 DEM as a criterion, the information characters and accuracy of topographic variables derived from DEMs of 1:50,000 map scale were made to investigate by means of a careful comparison with 1:10,000 scaled DEMs.
     运用信息论与数理统计及对比分析的方法 ,以 1∶1万DEM为基准 ,探讨在黄土丘陵沟壑区 1∶5万DEM所建立的数字高程模型信息特征和对地形描述的精度特征。
短句来源
  相似匹配句对
     On Variables in C Language
     浅析C语言中的变量
短句来源
     random variables.
     随机变量序列完全收敛性及重对数律的精确渐进性质的进一步推广.
短句来源
     (4)topographic function.
     ( 4)地形作用。
短句来源
     Check of the Topographic Map
     地形图的检验
短句来源
     Slope is the most important topographic variables. It is a critical work to establish a scientific and reasonable slope classification systems for terrain research and slope mapping.
     地面坡度是最重要的地形定量指标 ,建立科学合理的地面坡度分级体系是对坡度进行科学研究与坡度图制图必不可少的重要环节。
短句来源
查询“topographic variables”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。
  topographic variables
Climatic and topographic variables were not significant.
      
Tasseled cap indices (brightness, greenness, and wetness) and associated spectral changes for Landsat TM digital data were statistically modeled by topographic variables.
      
Redundancy analysis (RDA) showed that both topographic variables and vegetation types were needed to explain the variation in soil data.
      
Finally, the type of deposit becomes non determinant on vegetation where drainage and topographic variables indicate poorly or very poorly drained sites.
      
Stand-environmental complex ordinations with 53 variables in the matrix showed topographic variables to be the most important, followed by site age.
      
更多          


A new approach for the measurement of niche characteristics was employed which enables comparison between different plant species according to their distribution on a topographic gradient. Landform was analyzed with 4 attribute indices—elevation, aspect, location (position on slope) and slope—which were then viewed as a multidimensional environmental gradient. Using this model and the results of field sampling of Fagus engleriana and F. lucida communities and the topography of their habitats, multi ...

A new approach for the measurement of niche characteristics was employed which enables comparison between different plant species according to their distribution on a topographic gradient. Landform was analyzed with 4 attribute indices—elevation, aspect, location (position on slope) and slope—which were then viewed as a multidimensional environmental gradient. Using this model and the results of field sampling of Fagus engleriana and F. lucida communities and the topography of their habitats, multi dimensional niche breadths and niche overlaps were calculated for the two Fagus spp. The results suggest that: 1) the integrated niche width of F. engleriana is larger than that of F. lucida, the niche of F. lucida is wider on the aspect gradient, but F. engleriana is more broadly distributed on elevation, location and slope gradients; 2) niche overlaps of the two Fagus species are 0.259, 0.831, 0.670 and 0.676 on the elevation, aspect, location and slope gradients and the integrated nice overlap of the two species is 0.087; 3) the vertical ranges of F. lucida and F. engleriana are 1300 1950 m and 1450 2600 m respectively. F. engleriana prefers shaded and half shaded slopes at NW80 ° NE80 °; however, F. lucida population tends to concentrate on the half heliophilic and half shaded slope at NW20 ° SW10 °and NE20 ° SE10 °. F. luci da is absent at the valley bottom, and its importance value increases as the location uplifts; on the other hand, the importance values of F. engleriana are larger on the more stable and humid locations of type 1 and 3; the distribution range on slope gradient is wider for F. engleriana , with the majority on 20 40°, while F. lucida is concentrated in the range of 35 45°. The results indicate that topographic variables are efficient and effective indicators of gradients in plant species multidimensional niche space, and can properly reflect niche difference of different species at the scale of the landscape. Discussion of the reciprocal validation of the niche measurement on different environmental factors concludes the paper.

提出了根据不同植物种在地形梯度上的分布格局测度和比较其生态位的思路。将地形分解为海拔、坡向、坡位和坡度 4个属性指标 ,作为多维生态位空间的环境梯度轴。根据对三峡大老岭地区米心水青冈 (Fagus engleri-ana)和亮叶水青冈 (F.lucida)群落样方及其地形因子调查 ,分析了两个种的多维生态位宽度及种间的生态位重叠。结果 :1)大老岭米心水青冈种群的生态位宽度总体上大于亮叶水青冈。亮叶水青冈在坡向梯度上的生态位较宽 ;米心水青冈在海拔、坡位和坡度梯度上的生态位较宽 ;2 )两个种在海拔、坡向、坡位和坡度梯度上的生态位重叠度分别为 0 .2 5 9、0 .831、0 .6 70、0 .6 76 ,其总体重叠度为 0 .0 87;3)亮叶水青冈和米心水青冈分布的海拔范围分别为 130 0~ 2 0 0 0 m和 145 0~ 2 6 0 0 m。米心水青冈主要分布于 NW80°~ NE80°之间的阴坡和半阴坡 ;亮叶水青冈集中于NW2 0°~ SW10°和 NE2 0°~ SE10°的半阴半阳坡。亮叶水青冈不见于沟谷底部 ,其重要值随坡位上升而增大 ;而米心水青冈在湿润稳定的中、下坡位重要值最高。米...

提出了根据不同植物种在地形梯度上的分布格局测度和比较其生态位的思路。将地形分解为海拔、坡向、坡位和坡度 4个属性指标 ,作为多维生态位空间的环境梯度轴。根据对三峡大老岭地区米心水青冈 (Fagus engleri-ana)和亮叶水青冈 (F.lucida)群落样方及其地形因子调查 ,分析了两个种的多维生态位宽度及种间的生态位重叠。结果 :1)大老岭米心水青冈种群的生态位宽度总体上大于亮叶水青冈。亮叶水青冈在坡向梯度上的生态位较宽 ;米心水青冈在海拔、坡位和坡度梯度上的生态位较宽 ;2 )两个种在海拔、坡向、坡位和坡度梯度上的生态位重叠度分别为 0 .2 5 9、0 .831、0 .6 70、0 .6 76 ,其总体重叠度为 0 .0 87;3)亮叶水青冈和米心水青冈分布的海拔范围分别为 130 0~ 2 0 0 0 m和 145 0~ 2 6 0 0 m。米心水青冈主要分布于 NW80°~ NE80°之间的阴坡和半阴坡 ;亮叶水青冈集中于NW2 0°~ SW10°和 NE2 0°~ SE10°的半阴半阳坡。亮叶水青冈不见于沟谷底部 ,其重要值随坡位上升而增大 ;而米心水青冈在湿润稳定的中、下坡位重要值最高。米心水青冈适应的坡度范围很宽 ,主要在 2 0°~ 40°;而亮叶水青冈集中在 35°~ 45°的坡度范围。上述结果表明 :在景观尺度上 ,采用地形因子表征植物多维生态位空间的梯度

Slope is the most important topographic variables. It is a critical work to establish a scientific and reasonable slope classification systems for terrain research and slope mapping. After a comprehensive summary to the previous works in this field, it is pointed out that slope classification scheme could be divided into three different types on the basis of their serving purpose, namely critical classification, equal interval classification and fuzzy classification. Their availability is analyzed after...

Slope is the most important topographic variables. It is a critical work to establish a scientific and reasonable slope classification systems for terrain research and slope mapping. After a comprehensive summary to the previous works in this field, it is pointed out that slope classification scheme could be divided into three different types on the basis of their serving purpose, namely critical classification, equal interval classification and fuzzy classification. Their availability is analyzed after explaining the characteristics of the slope classifications. Taking Jiuyuangou area as the test area representing the loess hill gully terrain type, a digital slope model (DSM) was extracted from 1∶10 000 scaled DEMs. Different slope spectrums can be derived from DSMs according to the different slope classification systems, which shows a interesting discrepancy both in their distribution patterns and statistic values.

地面坡度是最重要的地形定量指标 ,建立科学合理的地面坡度分级体系是对坡度进行科学研究与坡度图制图必不可少的重要环节。总结了近年来在坡度分级研究方面的已有成果 ,将坡度分级方法归并为临界坡度分级、等差坡度分级、模糊坡度分级 3种方法。在说明了各种分类方法特点的基础上 ,探讨了其应用的适用性。以黄土丘陵沟壑区的韭园沟流域为实验样区 ,利用高精度 1∶ 1万比例尺的 DEM数据为信息源 ,建立了栅格数字坡度模型。利用分级统计的结果 ,对各种坡度分类方法所得到的地面坡谱进行了对比和分析

A series of experiments was made to investigate the accuracy of topographic variables derived from DEMs of 1∶50 000 map scaled and with a 5m horizontal resolution by means of a carefully comparison with 1∶10 000 scaled DEMs of the same area.Taking Jiuyan area of Suide county,Shaanxi Province P.R.China,as a test area and ARC/VIEW 3.1 as a main working platform.the results shows different errors can be found in all three topographic variables,such as slope gradient,coarseness of cross section and surface...

A series of experiments was made to investigate the accuracy of topographic variables derived from DEMs of 1∶50 000 map scaled and with a 5m horizontal resolution by means of a carefully comparison with 1∶10 000 scaled DEMs of the same area.Taking Jiuyan area of Suide county,Shaanxi Province P.R.China,as a test area and ARC/VIEW 3.1 as a main working platform.the results shows different errors can be found in all three topographic variables,such as slope gradient,coarseness of cross section and surface coarseness.The results of this study can be used to guide the errorrectifying and the accuracyevaluating of the DEMs in practical applications.

运用比较分析与数理统计的方法,以1∶1万DEM为基准,探讨在黄土丘陵沟壑区以1∶5万地形图为基础所建立的数字高程模型描述地表形态的精度特征。实验样区为陕北绥德县韭园沟流域,基本技术平台为ARC/VIEW地理信息系统软件。研究结果表明,在该地区内,利用1∶5万DEM所提取的地面坡度、剖面曲率、平面曲率3种地形因子都不同程度地存在着误差。其研究成果对于DEM应用精度的估算与误差的纠正有一定的指导意义。

 
<< 更多相关文摘    
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关topographic variables的内容
在知识搜索中查有关topographic variables的内容
在数字搜索中查有关topographic variables的内容
在概念知识元中查有关topographic variables的内容
在学术趋势中查有关topographic variables的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社