| 摘要: |
| 利用1985—2018年6个时间段的Landsat TM、ETM、OLI遥感影像，使用面向对象的遥感提取方法，通过选取空间利用结构、开发利用程度、景观指数及质心转移分析了沧州市围填海空间格局变化特征。结果表明：33年间研究区内围填海活动剧烈，1985—2018年，沧州近岸海域新增围填海面积137.05 km2，围填用海规模随时间变化不断扩大。1985—2003年，围填海空间利用结构和类型经历了从以围填养殖用海为主到各类型围填用海兼备的演化过程。研究区内围填海强度逐渐上升，2018年围填海开发强度指数达到274.55。港口用海逐渐成为沧州近海海域围填海的主要类型，围海养殖用海次之。1985—2018年，沧州市围填海景观的聚集度指数与蔓延度指数均较高，平均聚集度指数高达99.4004，围填海景观分布具有较强的规律性。沧州市围填海质心不断向东南方向移动，说明沧州市围填海开发的重点区域逐步迁移至沧州南部海域。在当前围填海现状下，应注重后续围填海开发活动的合理规划和集约利用。 |
| 关键词: 海洋环境科学 围填海 海域开发强度 空间质心 沧州市 |
| DOI：10.3969/J.ISSN.2095-4972.2020.04.008 |
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| 基金项目:自然资源部第三海洋研究所基本科研业务费专项资金资助项目（海三科2013034，海三科2016025）；国家重点研发计划资助项目（2017YFC1405101） |
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| Changes in reclamation spatial patterns in Cangzhou sea area in recent 33 years |
| DING Jian,CHANG Xin-yue,WANG Zhi-fang,LI Ting,GAO Wei-ming |
| (College of Resources and Environmental Sciences, Hebei Normal University, Shijiazhuang 050024, China;Hebei Environmental Evolution and Ecological Construction Laboratory, Shijiazhuang 050024, China) |
| Abstract: |
| Based on Landsat TM, ETM and OLI remote sensing images from 1985 to 2018 and objectoriented remote sensing extraction method, the dynamic characteristics of reclamation spatial patterns in Cangzhou sea area were analyzed with selecting spatial utilization structure, development and utilization level, landscape index and centroid transfer. The results show that the reclamation activity in the study area was vigorous in the past 33 years. From 1985 to 2018, the reclamation area in Cangzhou coastal area had increased by 137.05 km2and the scale of reclamation projects continued to expand with time. From 1985 to 2003, the structure of space utilization and types of reclamation had undergone an evolution process from main reclamation for aquaculture to all types of reclamation. The reclamation intensity increased gradually and the reclamation development intensity index reached 274.55 in 2018. The coastal sea area used for harbor development has gradually become the main type of reclamation in Cangzhou offshore waters after the reclamation for mariculture. From 1985 to 2018, the aggregation index and spread index of reclamation landscape in Cangzhou were high. The average aggregation index was as high as 99.4004 and the distribution of reclamation landscape showed a strong regularity. The spatial centroid of reclamation is constantly moving to the southeast, indicating that the key areas of reclamation development are gradually migrating to the southern sea area of Cangzhou. Under the current situation of reclamation, attention should be paid to the rational planning and intensive utilization after the reclamation activities. |
| Key words: marine environmental science reclamation sea area development intensity spatial centroid Cangzhou |
