中国建设用地的坡谱演化规律与爬坡影响
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周亮, 党雪薇, 周成虎, 王波, 魏伟
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Evolution characteristics of slope spectrum and slope-climbing effects of built-up land in China
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ZHOU Liang, DANG Xuewei, ZHOU Chenghu, WANG Bo, WEI Wei
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表1 1990—2018年上限坡度在不同适宜等级坡度区段内的城市数量及占比
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Table 1 The number and accounts of cities with ULS in different slope interval from 1990 to 2018
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| 年份 | 0~3° | | 3°~8° | | 8°~15° | | 15°~25° | | ≥ 25° | | 数量(个) | 占比(%) | 数量(个) | 占比(%) | 数量(个) | 占比(%) | 数量(个) | 占比(%) | 数量(个) | 占比(%) | | 1990 | 2 | 0.54 | | 141 | 38.01 | | 111 | 29.92 | | 90 | 24.26 | | 27 | 7.28 | | 1995 | 2 | 0.54 | 141 | 38.01 | 112 | 30.19 | 88 | 23.72 | 28 | 7.55 | | 2000 | 2 | 0.54 | 142 | 38.27 | 112 | 30.19 | 89 | 23.99 | 26 | 7.01 | | 2005 | 1 | 0.27 | 143 | 38.54 | 110 | 29.65 | 89 | 23.99 | 28 | 7.55 | | 2010 | 1 | 0.27 | 143 | 38.54 | 108 | 29.11 | 91 | 24.53 | 28 | 7.55 | | 2015 | 1 | 0.27 | 133 | 35.85 | 106 | 28.57 | 94 | 25.34 | 37 | 9.97 | | 2018 | 1 | 0.27 | 120 | 32.35 | 106 | 28.57 | 108 | 29.11 | 36 | 9.7 |
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