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地理学报  2008 

深圳快速城市化中地形对景观垂直格局的影响

DOI: 10.11821/xb200801008, PP. 75-82

Keywords: 景观格局,垂直动态,快速城市化地区,RS,和GIS,深圳

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Abstract:

基于RS和GIS的支持,以深圳市为案例研究地形对景观格局及其垂直分布的影响,进行景观格局时空动态分析。文章指出,人类活动对土地的干扰程度表现为从低平地区向高峻地区递减,从而导致在以山地占主体的盐田等区在城市化前期低于地势平坦的福田等区;随着城市的进一步加深,福田等区多样性指数则快速降低,盐田等区相对降低很少,或还处于上升状态。多样性指数在高程带和坡度带上多时段变化表明在垂直空间上,土地利用结构的垂直分异是景观格局垂直分异内在原因,多样性指数的空间曲线和时间曲线具有反“U”形库兹涅茨曲线特征,但是这种曲线变化特征需要到一定的城市化阶段才能形成,并且曲线特征随城市化的加深而更加明显;在时间上,低海拔和低坡度地区的多样性指数的动态特征也有类似库兹涅茨曲线的反“U”形,而且随城市化的加深,具有这种特征的高程带和坡度带均在上移。

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