河网提取,drainage network extraction
1)drainage network extraction河网提取
1.The paper introduces the theories and methods ofdrainage network extraction, and analyses the results of the test in Lancang River Basin.而河网提取、子流域划分以及分布式水文模型等对水文地理信息的分析、模拟技术和方法更是其中的难点。
2.The approach has high applicability and is not restricted by the basin scale and original data precision,and also,the correspondingdrainage network extraction process could take full advantage of current various software platforms without any change.针对现有国内外各种软件平台对大尺度流域高分辨率河网提取能力不足的现状,提出了多叉树耦合方法,通过先分块提取、后重新耦合的方式,可以获取全流域一体化的高分辨率河网拓扑信息。
英文短句/例句
parative Analysis of Methods Deriving Drainage Network Based DEM;基于DEM的河网提取方法对比分析
2.Research on the Algorithms of the Digital Channel Network Extraction Based on Digital Elevation Model基于DEM的流域数字河网提取算法研究
3.Simulation of Tangjiashan dam-break flood along Fujiang River based on drainage networks extract from DEM data source涪江通口河流域河网提取及唐家山溃流洪水模拟分析
4.Multi-tree Coupling Method of High Resolution Drainage Network Extraction on Large-scale Basin大尺度流域高分辨率河网提取的多叉树耦合方法
5.The methods of determining flow direction in unit grid include single direction methods, such as D8 method, Rho8 method, Lea method, DEMON method and D∞ method ,and multitude directions methods.提取河网的识别谷点法和基于流向提取河网的方法;
6.Study on the Extraction of Drainage Network of Watershed Based on DEM--A Case Study of Jinjiang Watershed基于DEM流域河网水系提取研究——以晋江流域为例
7.Trend Analysis of Digital Drainage Network Extraction Affected by DEM ResolutionDEM分辨率对数字河网水系提取的影响趋势分析
8.A Comparative Study on Different Schemes of Automatic River System Extraction Based on DEM and Vector Channels基于DEM与数字化河道提取流域河网的不同方案比较研究
9.The Neural Network Method Based on the Interior Factors of River Transportation Forecasts the River Transportation Capacity;基于内在因素提取的内河航运量神经网络预测方法
10.Study on method for extraction of river network in Dujiangyan area within Minjiang River Basin based on GIS and DEM基于GIS和DEM岷江流域都江堰区域河网水系的提取方法研究
11.a bucket for lifting material from a channel or riverbed.从河床或沟提取材料的桶。
12.LUCC Information Extraction by Remote Sensing Techniques in Shiyang River Valley;石羊河流域LUCC遥感信息提取方法
13.Method of information extraction from section map based on activeX technology基于ActiveX技术的河道断面图信息提取
14.The Study of Hebei China Mobile Communication Company Network Quality Improvement Strategy;河北移动公司网络质量提升策略研究
15.STUDY OF THE REMOTE SENSING INFORMATION EXTRACTION AND GOLD ORE PROSPECTING IN LIUHE DISTRICT溜河地区金矿找矿的遥感信息提取及研究
16.Extraction and Analysis of River Lake Wetland Information Based on Remote Sensing and GIS;基于遥感和GIS的河流湖泊湿地信息提取与分析
17.Study on the Information Extraction and Evolution of Old River Channel by Using RS Data in East of Chaohu Lake;巢湖东部古河道遥感信息提取及水系变迁研究
18.Extraction, Separation and Application on Flavonoids in Seabuckthorn Marc from Qinghe in Xinjiang新疆青河沙棘果渣黄酮化合物提取分离及应用
相关短句/例句
channel network extraction河网提取
1.The Chanba River Watershed flowing through Xi\"an City was taken as a research object forchannel network extraction.以G IS为平台,介绍了基于地表径流漫流模型的流域河网提取算法与流程。
3)extract digital network数字河网提取
4)automated drainage network extraction河网自动提取技术
parison and application of several DEM hydrologic preprocessing algorithms forautomated drainage network extraction;河网自动提取技术中DEM的几种预处理算法及应用
5)River extraction河流提取
6)polypeptides A河豚提取物
延伸阅读
河网化平原地区修建纵横交错成网的河道，对水资源进行调节和综合利用的工程技术措施。中国早在五代时期(10世纪)，江苏太湖流域就已形成浦塘制,即纵横交叉的河网，既可用以灌溉，又可进行除涝和综合利用。目前长江中下游广大平原地区、淮河苏北地区和珠江三角洲已形成了比较完整的河网系统，基本实现旱涝保收，成为农业高产地区。按河网所处的位置及其作用，一般可分为内河网和外河网。内河网分布在一个地区之内，承担该地区内部的排涝、滞涝、排渍、灌溉、航运、养殖等任务。在多水季节,排蓄本区及来自外区的径流,用以除涝；在枯水季节，所存蓄的水量则用于灌溉、航运及其他部门。内河网有天然河道和人工开挖河道。内河网中各河道之间联系形式，一般有"井"字形、"山"字形和"丰"字形三种。"井"字形河网水流四处贯通，航运方便，但当河网主要承担排水任务,并另有灌溉渠系时,河网与灌溉渠道、道路等的交叉建筑物多；"山"字形和"丰"字形可避免上述缺点，但航运不便。外河网大多是天然河道，多分布在地区之间或横跨整个流域，承担地区或流域之间的水量调配，发挥防洪、灌溉、除涝、航运等作用。在内河网与外河网联结处，要修建水闸进行控制，将内、外水分开，有时还需修建泵站，提灌抽排。河网布置的原则有：①便于按地形特点进行分级分片控制；②按地形条件布置河道，使土方量和建筑物数量少；③尽量利用已有河道及建筑物；④内河网布置与土地利用规划相结合，其中末级河道布置要满足机耕和控制地下水位要求；⑤外河网应满足地区或流域之间水量调配要求；⑥便于内、外河网之间联结。河网布置和尺寸与地区内灌溉渠道、湖泊、水闸、泵站等的布局和规模有关，应进行全面规划。中国大多数地区采用外河网与内河网统一分级方法，一般分为4～6级。各级河道断面尺寸，可根据其所承担的主要任务，通过水利计算确定。外河网断面尺寸主要取决于防洪和通航要求，内河网断面尺寸主要取决于排涝、滞涝要求。内河网的水面率是以内河网的水面面积与排水区面积的百分比表示，一般要求达到5％～10％。
