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中国农学通报 ›› 2015, Vol. 31 ›› Issue (17): 121-126.doi: 10.11924/j.issn.1000-6850.casb15030209

所属专题: 耕地保护

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

中等时间尺度县级耕地景观格局变化研究——以福建省龙海市(县)为例

徐 磊,黄炎和,范胜龙,邓燕红,涂 凯   

  1. 福建农林大学资源与环境学院,福建农林大学资源与环境学院,福建农林大学资源与环境学院,福建农林大学资源与环境学院,福建农林大学资源与环境学院
  • 收稿日期:2015-03-25 修回日期:2015-04-01 接受日期:2015-04-16 出版日期:2015-07-27 发布日期:2015-07-27
  • 通讯作者: 黄炎和
  • 基金资助:
    国家科技支撑项目“中小型崩岗区的生态修复技术与示范”(2014bad15b0303)。

Research on Landscape Pattern Change of Cultivated Land in Country on Medium Time Scale——A Case of Longhai City (County) Fujian Province

  • Received:2015-03-25 Revised:2015-04-01 Accepted:2015-04-16 Online:2015-07-27 Published:2015-07-27

摘要: 耕地是土地的精华,是维护国家粮食安全的保障。笔者以景观生态理论为基础,选取分形维数、空间结构稳定性指数、蔓延度指数、香农多样性指数以及香农均匀度指数,对龙海市1998、2007、2013年耕地景观利用现状进行分析。研究结果表明人类社会活动对研究区的耕地景观影响效应既有正向的,也有负向的。研究区耕地景观斑块的规整度提高,耕地景观抗干扰能力增强,耕地的稳定性提升,耕地斑块类型趋于均匀化,但优势斑块的连续性降低和耕地景观的破碎程度增加。在对正向效应土地整理和农业结构调整进行肯定的同时,改善和避免县级土地开发这一负向作用的人类活动。

关键词: 奶牛, 奶牛, 结核病, 副结核病, 流行病学调查

Abstract: Cultivated land is the essence of land, as well as the guarantee for national food security. Based on the theory of landscape ecology, the author analyzed the utilization of cultivated land in Longhai City in 1998, 2007 and 2013, with the selected indices of fractal dimension, spatial structure stability index, contagion index, Shannon’ s diversity index and Shannon’ s evenness index. The research results showed that the effect of human interference on studied cultivated land could be both positive and negative. The regularity of patches increased, the antijamming capability and stability of cultivated land were strengthened, the types of cultivated land patches tended to be homogenization, but the continuity of high quality patches went down and the degree of crushing increased. It is concluded that while positive effects of land consolidation and structural adjustment of agriculture should be recognized, county-level land development which is a negative human activity should also be avoided and standardized.