YAN Hui-min,LI Bi-cheng,LI Shi-hua.Study and Use on the 4D Technology to Construct Digital Watershed Frame[J].Research of Soil and Water Conservation,2005,12(03):99-100,153.
基于4D技术构建数字流域框架的研究与实践
- Title:
- Study and Use on the 4D Technology to Construct Digital Watershed Frame
- Keywords:
- 4D technology; digital watershed; practice and study
- 分类号:
- TP79
- 摘要:
- 建设数字流域首先要确定流域空间数据框架的结构及其构建方法，以确保数字流域包含充分且易于加工的空间信息，4D技术是以产品显示其优势的，以4D产品作为基础框架建设数字流域在黄土高原小流域已被推广应用。阐述了4D产品在数字流域中的作用，应用适宜于小流域的4D技术体系创建数字流域的技术流程及其精度和效率的影响因素；探讨了应用4D技术建设数字流域空间数据框架的可行性和实践意义。
- Abstract:
- The first step of constructing digital watershed is deciding the structure of watershed’s spatial data frame and its building method, so as to make sure the digital watershed including enough and easy spatial data to process. 4D technology shows predominance by its products, and the method which 4D products are used as basic frame of digital watershed has been spread in Loess Plateau watershed. 4D products’roles and significations in digital watershed, the flow of building digital watershed by 4D technology suitable to watershed and the factors which influence precision and efficiency are all presented, and the feasibility and practice are discussed.
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备注/Memo
收稿日期:2004-12-22;改回日期:。
基金项目:国家“十五”重大科技攻关课题（2001BA606A-4）
作者简介:闫慧敏（1974- ），女，博士生，主要从事地理信息系统与遥感应用研究。