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scale of watershed
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  “scale of watershed”译为未确定词的双语例句
     Taken the Yanghe Watershed in Qinhuangdao City as a case, this article studies the characters and changes of modern landscape pattern in the scale of watershed.
     本文以秦皇岛市洋河流域为例,研究流域现代景观格局特征。
短句来源
     In order to deeply study the relationship between vegetation and runoff and sediment transport at the scale of watershed,and to provide theoretical basis for vegetation restoration of Loess area,forested watershed and rangeland watershed with similar terrain and topographical features are selected using method of clustering analysis to inlaid Caijiachan catchment which lies in Jixian county of Shanxi province in Loess area,and runoff and sediment transport of which are contrasted and analyzed.
     为进一步探讨森林植被对流域尺度径流和输沙的影响,给黄土区植被建设提供理论依据,通过对黄土区山西省吉县蔡家川嵌套流域的聚类分析,选取地形地貌特征相似的森林流域和无林流域,对其雨季径流和输沙进行分析。
短句来源
     In order to deeply study the relationship between vegetation and runoff and sediment transport at the scale of watershed, and to provide theoretical basis for vegetation restoration of Loess area, forested watershed and rangeland watershed with similar terrain and topographical features are selected using method of clustering analysis to inlaid Caijiachan catchment which lies in Jixian county of Shanxi province in Loess area, and runoff and sediment transport of which are contrasted and analyzed.
     为进一步探讨森林植被对流域尺度径流和输沙的影响,给黄土区植被建设提供理论依据,通过对黄土区山西省吉县蔡家川嵌套流域的聚类分析,选取地形地貌特征相似的森林流域和无林流域,对其雨季径流和输沙进行分析。
  相似匹配句对
     Memory on Scale
     尺度的记忆
短句来源
     The scale is appropriate.
     尺度选取要合适。
短句来源
     e and Kolmogoroff scale ? .
     e和Kolmogoroff尺度?
短句来源
     On Economies of Scale
     规模经济——中国农业发展思路研究
短句来源
     watershed.
     小流域治理已经成为我国治理水土流失的主要形式.
短句来源
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  scale of watershed
Fortunately, this can be amended by manually adjusting the scale of watershed segmentation to a finer scale for that particular portion of boundaries.
      


This paper is for developing system of analyzing and simulating runoff pathway in hill\|slopes land and spatial distribution of soil erosion in small watershed in the Loess Plateau based on GIS processed in raster. By using View GIS, after the layers are processed in raster and the raster\|based database is setup, the research simulates flow direction over raster\|based hill\|slopes on DEM in a scale of watershed through the module of soil erosion developed for this research and computes the topographic...

This paper is for developing system of analyzing and simulating runoff pathway in hill\|slopes land and spatial distribution of soil erosion in small watershed in the Loess Plateau based on GIS processed in raster. By using View GIS, after the layers are processed in raster and the raster\|based database is setup, the research simulates flow direction over raster\|based hill\|slopes on DEM in a scale of watershed through the module of soil erosion developed for this research and computes the topographic parameters ( LS ) of USLE within the system. As a result, the output data and the spatial data of raster are stored in the database (DBF) for further use. The simulation maps of runoff pathway and distribution of soil erosion in watershed can be printed. This research is a base of developing system that programs and designs protection forestry systems in watershed in the Loess Plateau.

该研究旨在研制建立适合我国黄土区以小流域为单元、基于GIS栅格化的坡面径流路径及土壤侵蚀强度空间分异分析模拟模型 .以ViewGIS为平台 ,将流域图经栅格化处理和建立基于栅格化处理的关系型数据库 ,利用D8方法和DEMON方法 ,分析模拟径流路径 ;开发出了适于分析模拟黄土区小流域土壤侵蚀强度空间分布的模块 ,以小流域为单元对坡面径流路径进行了模拟 ,并模拟计算了通用水土流失方程的地形因子LS值在该流域坡面的分布 ,最后将计算结果存放于关系型数据库中 .该研究深入ViewGIS内核 ,在开发DEM径流分析、土壤侵蚀等功能的基础上 ,实现了对整个流域径流路径及土壤侵蚀地形地貌分异规律的计算机分析模拟与成图 ,为研制开发防护林体系高效空间配置智能化规划设计系统打下了良好的基础

River ecology is a vital field in limnological research, and several new theories and methods have been developed and used in the study of lotic systems. In this article, a summary of these new theories was introduced, which includes river continuum concept, ecological water consumption of river ecosystem, services and health of river e-cosystem, ecosystem management, and watershed ecology. The authors suggested that the research of river ecology should be carried out on the scale of watershed, and that...

River ecology is a vital field in limnological research, and several new theories and methods have been developed and used in the study of lotic systems. In this article, a summary of these new theories was introduced, which includes river continuum concept, ecological water consumption of river ecosystem, services and health of river e-cosystem, ecosystem management, and watershed ecology. The authors suggested that the research of river ecology should be carried out on the scale of watershed, and that the combination of ecosystem health and ecosystem services could be the key point in the sustainable development management of river ecosystem. Seeing that there are few studies in this area in China, relevant research should be conducted as soon as possible.

近年来河流生态系统成为湖沼学研究的重点,很多新理论、新方法被应用到研究中。文章综述了国内外的相关研究,并着重从河流连续、河流的生态需水量、河流生态系统的服务价值与健康评价、河流的生态系统管理以及流域生态学等几个热点方向作了详细论述。作者认为,今后河流生态学的研究应在流域尺度上展开,结合河流健康及生态系统服务评价进行河流生态系统可持续管理研究将是近期河流生态学的重点问题之一。鉴于我国的实际情况,作者建议应该尽快开展相关领域的研究。

In order to deeply study the relationship between vegetation and runoff and sediment transport at the scale of watershed,and to provide theoretical basis for vegetation restoration of Loess area,forested watershed and rangeland watershed with similar terrain and topographical features are selected using method of clustering analysis to inlaid Caijiachan catchment which lies in Jixian county of Shanxi province in Loess area,and runoff and sediment transport of which are contrasted and analyzed.The...

In order to deeply study the relationship between vegetation and runoff and sediment transport at the scale of watershed,and to provide theoretical basis for vegetation restoration of Loess area,forested watershed and rangeland watershed with similar terrain and topographical features are selected using method of clustering analysis to inlaid Caijiachan catchment which lies in Jixian county of Shanxi province in Loess area,and runoff and sediment transport of which are contrasted and analyzed.The results showed that runoff was delayed dramatically at beginning time,and the peak flow of watershed reduced for forest vegetation played role in holding up and absorbing precipitation depending on canopy layer and litter.Besides,with increase of forest coverage,the amount of runoff,runoff depth and runoff coefficient in rain season decreased.It clarified that runoff depth and runoff coefficient of rangeland watershed in rain season were 5—20-fold as much as those of forest watershed,and those of less forest watershed were 2.7—2.9-fold as much as those of more forest watershed.And sediment yield from less forest watershed by storm was 2—5-fold than those from more forest watershed.(Besides),the variation of sediment transport hydrograph of the former was more acute than those of the latter.For the reason of complexity and scaled dependence of runoff influenced by forest vegetation,assess of forest hydrological functions based on regional scale or watershed scale was worth of further research challenges.

为进一步探讨森林植被对流域尺度径流和输沙的影响,给黄土区植被建设提供理论依据,通过对黄土区山西省吉县蔡家川嵌套流域的聚类分析,选取地形地貌特征相似的森林流域和无林流域,对其雨季径流和输沙进行分析。结果表明:森林植被可以大幅度地延缓产流时间、减少小流域的暴雨洪峰流量;随着森林植被覆盖率的增加,流域雨季径流量、径流深和径流系数减少,无林流域比森林流域的雨季径流深和径流系数高5~20倍,少林流域比多林流域的雨季径流深和径流系数高2.7~2.9倍;少林流域暴雨径流输沙量是多林流域的3~6倍,且前者暴雨径流输沙过程线的变化比后者剧烈得多。由于森林植被对流域径流影响的复杂性和尺度依赖性,森林在区域(或大流域)尺度的水文功能评价仍有待进一步深入研究。

 
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