地理研究 ›› 2015, Vol. 34 ›› Issue (4): 701-710.doi: 10.11821/dlyj201504009

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海岸带土地利用适宜性评价——以杭州湾南岸为例

李伟芳(), 俞腾, 李加林, 陈鹏程, 陈阳   

  1. 宁波大学城市科学系, 宁波 315211
  • 收稿日期:2014-09-20 修回日期:2014-12-19 出版日期:2015-04-10 发布日期:2015-06-11
  • 作者简介:

    作者简介:李伟芳(1964- ),男,浙江省宁波人,副教授,硕士生导师,主要从事土地资源管理与规划研究。E-mail: liweifang@nbu.edu.cn

  • 基金资助:
    浙江省海洋文化与经济研究中心重大招标项目(14HYJDYY03)

Suitability evaluation of land use in coastal zones: A case study in southern Hangzhou Bay

Weifang LI(), Teng YU, Jialin LI, Pengcheng CHEN, Yang CHEN   

  1. Department of Urban Science, Ningbo University, Ningbo 315211, Zhejiang, China
  • Received:2014-09-20 Revised:2014-12-19 Online:2015-04-10 Published:2015-06-11

摘要:

位于海域—陆域系统交叉和相互作用的海岸带,其土地利用受到自然和人文的多因素共同影响。进行海岸带土地利用适宜性评价对于经济发展迅速的海岸带土地资源的合理配置和开发利用具有重要意义。以2010年杭州湾南岸土地利用数据为基础,利用LandUSEM模型,依据土地利用类型与评价因素不同等级组合的频繁度进行土地利用适宜性评价,计算不同土地利用单因子适宜度及综合适宜度。结果表明:① 中等适宜以上占总区域的73.15%,近四分之一位于临界适宜及以下。这说明杭州湾南岸土地利用适宜性较好,各适宜性等级分异情况明显。② 杭州湾南岸土地利用适宜性具有较明显的空间分布特点,且余姚、慈溪岸段适宜性情况较镇海岸段好。镇海岸段的中等适宜与非常适宜区面积比例大于余姚和慈溪岸段,临界适宜以上区域面积远小于余姚和慈溪岸段,这与当地的工业结构有关。③ 各土地利用类型开发程度较适宜,96.45%的城乡建设用地处于临界适宜以上,其中临界适宜占70.91%;89.31%的滩涂用地位于临界适宜以上,且80.72%为非常适宜,可开发潜力大,可将滩涂用地适当适时地转化为农用地或城乡建设用地,以满足区域内经济发展的需求用地。

关键词: 土地利用, 适宜性, 海岸带, 地理信息系统

Abstract:

The coastal zone lies in the overlapping and intersection region of marine and continent, and hence multiple factors have effects on the coastal land use including natural resources, social and economic activities. Therefore, it is of great significance to evaluate the suitability of coastal land for rational allocation, development and utilization in coastal zones. In this paper, we implement the suitability evaluation model (LandUSEM) with the land use dataset of southern Hangzhou Bay in 2010. The frequencies in different combinations of land use types and all evaluation factors are used to evaluate the suitability of coastal land use, separate suitability results from single factors and comprehensive results from different land use types are achieved. Some conclusions drawn from the evaluation results are in the following: (1) The proportion of medium-level suitability is 73.15%, and nearly 25% of the coastal land use is assigned as the critical suitability type or below. It is shown that overall the suitability result in land use of southern Hangzhou Bay performs well, while different suitability categories behave obvious grading divergences. (2) Suitability results in southern Hangzhou Bay has clear characteristics of spatial distributions. Suitability evaluation results in Yuyao and Cixi city outperform that of Zhenhai. Coastal areas denoting medium- and high-level suitability results in Zhenhai is larger than those of Yuyao and Cixi, whereas the critical suitability result of Zhenhai covers far smaller coastal areas than those of Yuyao and Cixi. The explanations for that is partly because of local industrial structures in each city. (3) Each land use type has suitable development status in varying degrees. Some 96.45% of urban and rural construction land is estimated as critical suitablility and above above, and moreover the critical suitability takes 70.91% of the construction land. Some 89.31% of shoal land has critical suitability and above, and among that 80.72% is highly suitable. This indicates that the shoal conditions have good potentials in land use, and proper and timely actions are encouraged to transfer shoal lands into agricultural lands or urban construction lands to satisfy the needs from economic development in southern Hangzhou Bay.

Key words: land use, suitability evaluation, coastal zone, geographical information system