基于地理网格的水文测站编码研究

Hydrological station coding based on geographic grid

为了推进水文多源数据的标准化采集、精准识别和高效应用,加速水文大数据平台的建设,针对当前浙江省水文测站编码存在的一站多码、同站不同码等问题,提出了考虑空间位置的基于地理网格的水文要素编码方法。该编码方法对浙江省全域进行了两级地理网格划分,基本网格密度为1 km×1 km,子网格密度划定为100 m×100 m。该方法还制定了网格编码规则,建立了网格内所有水文要素与网格编码之间的关联关系,实现了以网格单元为对象的多要素业务协同和精细化分析。该编码方法具有预先自动生成、方便数据交换和共享、利于数据应用和拓展等优点,为后续水文数据的地理空间融合分析与应用奠定了基础。

In order to promote standardized collection, accurate identification and efficient application of hydrological multi-source data, and accelerate the construction of hydrological big data platform, in view of the problems of multiple codes for one station and different codes at the same station in Zhejiang Province, we propose a geogrid-based coding method for hydrological elements considering spatial position.This method divides the whole region of Zhejiang Province into two levels of geographic grids, a basic grid density of 1 km×1 km, and a fine sub-grid of 100 m×100 m.The grid coding rules are formulated and all hydrological elements′ relationship with grid coding is established.With the help of aforementioned grid-based method, affairs collaboration and refined analysis of various hydrological elements can be efficiently achieved.This method has the advantages of automatic generation in advance, convenient data exchange and sharing, and data application and expansion, which lays a foundation for the subsequent geospatial fusion analysis and application of hydrological data.