Mining land reclamation is a very complex systemic project. There are a lot of spatial data and spatial information during the whole procedure.
矿区土地复垦是一项极其综合的系统工程，其整个过程涉及到大量的空间数据与空间信息。
The spatial information database of land reclamation is a temporal database due to the change of land resource with the coal mining.
沉陷地土地资源信息随着煤炭的开采而不断变化，所以，矿区土地复垦空间数据库是一个时态数据库。
The reclamation of the mining area land is the main measure to recover its ecological environment.
铁矿区土地复垦是恢复矿区生态环境的主要措施。
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