1979—2020年深圳市围填海空间演变特征与驱动因素研究

    Evolution and driving factors of the reclamation in Shenzhen from 1979 to 2020

    • 摘要: 在沿海城市建设用地不足的背景下,围填海活动是海岸带开发的重要利用途径。本文利用9个不同时相的Landsat MSS/TM/OLI遥感影像数据源,对深圳市42 a时间跨度内的围填海空间分布、利用类型、围垦与开发强度等动态演变特征进行分析并探究其驱动因素。结果表明:研究时段内,围填海规模速率变化呈现先迅猛增加,后增势放缓的趋势。围填海空间分布形态由细条带状延伸向斑块式镶嵌演变。围填海利用类型由单一化向多元与综合化的开发利用结构转变。岸线围垦强度呈先增强后减弱的趋势,东西岸线形成“西强东弱”的空间分异格局。在驱动因素上,海岸地貌条件决定了围填海的区位选择,政策法规导向决定了围填海的强度与速率,社会经济因素决定了围填海的规模与类型。

       

      Abstract: Under the background of insufficient land for construction in coastal cities, reclamation is an important way to develop coastal zones. In this paper, 9 Landsat MSS/TM/OLI remote sensing image data sources of different phases were used. The evolution of the spatial distribution, utilization type, and development intensity of the reclamation in Shenzhen in the past 41 years were analyzed, and the driving factors explored. Results show that in the study period, the rate of reclamation scale increased rapidly at first and then slowed down. The spatial distribution pattern of reclamation changed from thin strip to patch mosaic. The development and utilization pattern of reclamation changed from single type to diversified and integrated types. The shoreline reclamation intensity was increased first and then weakened, and the east and west shorelines formed a spatial differentiation pattern of "strong in the west and weak in the east". In terms of driving factors, coastal geomorphic conditions determined the location choice of reclamation, policy and regulatory guidance determined the intensity and rate of reclamation, and social and economic factors determined the scale and type of reclamation.

       

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