30年来象山港海岸带土地开发利用强度时空变化研究

发布时间：2019-05-16 00:15

【摘要】：以象山港海岸带为研究区域,利用1985年,1995年,2005年和2015年4期TM遥感影像数据,将土地利用类型分为8大类,通过计算土地利用类型动态度、土地利用转移矩阵、土地利用结构信息熵以及土地开发利用强度综合指数4种指标模型,分析了象山港海岸带1985-2015年土地开发利用的速度、结构、程度以及时空变化。结果表明:(1)1985-2015年象山港海岸带养殖用地及盐田扩张速度最快,动态度最高可达11.97%,建设用地扩张速度次之,但面积增幅最为显著,滩涂缩减速度最大,耕地面积明显减少;(2)30年间土地类型主要转变方向为耕地转为建设用地,其次为林地转变为耕地;(3)信息熵逐时期增加,土地利用结构均质性不断加强,区域发展在逐渐走向成熟;(4)各时期土地利用强度指数变化率均大于零,象山港海岸带土地开发利用强度不断增强。
[Abstract]:Taking the coastal zone of Xiangshan Port as the research area, using the TM remote sensing image data of 1985, 1995, 2005 and 2015, the land use types are divided into eight categories, and the dynamic attitude of land use types and land use transfer matrix are calculated. The information entropy of land use structure and the comprehensive index of land development and use intensity are analyzed in this paper. The speed, structure, degree and temporal and spatial variation of land development and use in Xiangshan Port coastal zone from 1985 to 2015 are analyzed. The results showed that: (1) from 1985 to 2015, the expansion rate of aquaculture land and salt field in Xiangshan Port coastal zone was the fastest, the dynamic attitude was 11.97%, the expansion rate of construction land was the second, but the increase of area was the most significant, and the reduction rate of beach was the largest. The area of cultivated land decreased obviously; (2) in the past 30 years, the main transformation direction of land type is cultivated land to construction land, followed by forest land to cultivated land. (3) the information entropy increases gradually, the homogeneity of land use structure is strengthened, and the regional development is gradually maturing. (4) the change rate of land use intensity index is more than zero in each period, and the intensity of land development and use in Xiangshan Port coastal zone is increasing.
【作者单位】：宁波大学地理与空间信息技术系;浙江省海洋文化与经济研究中心;宁波大学公共管理系;
【基金】：国家自然科学基金(U1609203,41471004) 浙江省社科基金(16JDHH005) 浙江省大学生科技创新活动计划暨新苗人才计划项目(2016R405073)
【分类号】：P748

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