图斑的平均坡度是新一轮土地利用更新调查中确定土地利用是否合理的重要参数，但常用的图斑平均坡度获取方法均存在不同程度的不足。
The parcels average slope is a vital parameter, which determines whether land use is rational in the current round of land use updated survey.
结果表明：采用SPOT5高分辨率卫星影像进行土地利用更新调查，是切实可行的，能够较大提高调查工作效率、保证调查成果数据的精度和可靠性。
The purpose of the paper is to explore techniques, methods and nowchart of land use investigation upgrading based on SPOT5 high-resolution satellite image.
能够对土地利用变更调查数据进行更新、管理与分析；能够输出各种查询、统计和分析结果。
It can also update, administrate and analyze the data of land use and output all kinds of inquiry, statistics and analysis result.
能够对土地利用变更调查数据进行更新、管理与分析；能够输出各种查询、统计和分析结果。
It can also update, administrate and analyze the data of land use and output all kinds of inquiry, statistics and analysis result.
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