上海市1:100万湿地数据

该数据由“中国1:100万湿地数据”剪裁而来。
“中国1:100万湿地数据”主要反映2000年代全国沼泽湿地信息,采用十进制度为单位的地理坐标表示,主要内容包括：沼泽湿地的类型、湿地的水源补给类型、土壤类型、主要植被类型、所属地理区域等。执行了《中国可持续发展信息共享系统信息分类与编码标准》。本数据库数据源：1:20沼泽图（内部版）、青藏高原1：50万沼泽图（内部版）、沼泽调查数据1：100万和全国1：400万沼泽图；处理步骤为：数据源选择、预处理、沼泽湿地要素数字化与编码、数据编辑处理、建立拓扑关系、接边处理、投影转换、与地名等属性数据库连结并获取属性数据。

This dataset is clipped from the *1:1,000,000 Wetland Dataset of China*.
The *1:1,000,000 Wetland Dataset of China* mainly reflects national marsh wetland information from the 2000s, using geographic coordinates in decimal degrees as the unit. Its core contents include: types of marsh wetlands, types of wetland water recharge, soil types, dominant vegetation types, affiliated geographical regions, and other relevant information. This database is developed in accordance with the *Information Classification and Coding Standards of China's Sustainable Development Information Sharing System*.
Data sources of this database: 1:200,000 marsh map (internal version), 1:500,000 marsh map of the Qinghai-Tibet Plateau (internal version), 1:1,000,000 marsh survey data, and national 1:4,000,000 marsh map.
The processing workflow is as follows: data source selection, preprocessing, digitization and coding of marsh wetland features, data editing and processing, establishment of topological relationships, edge matching processing, projection transformation, connection with attribute databases (e.g., place name databases) and acquisition of attribute data.