这种变化特征主要与控制小区地形、土地利用、地表径流和水系特征有关。
These change characteristics were related mainly to the topography, land use, surface run-off and drainage characteristics of the controlled areas.
对合理利用土地，控制城市用地规模，提高城市土地利用效率具有较好的理论和实践意义。
It has comparatively good theoretical and practical significance to use urban land reasonably, control its use scale and to improve the efficiency.
从严控制新增建设用地特别是工业用地，今年土地利用计划总规模控制在去年水平。
We must tighten control over the amount of land used for development projects, especially for industrial purposes, and hold the total amount of land used this year to last year's level.
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