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林业科学 ›› 2014, Vol. 50 ›› Issue (5): 34-40.doi: 10.11707/j.1001-7488.20140505

• 论文与研究报告 • 上一篇    下一篇

基于自动分类法的红树植物叶片信息测定

乐通潮1,2, 张会儒1, 谭芳林2   

  1. 1. 中国林业科学研究院资源信息研究所 北京 100091;
    2. 福建省林业科学研究院 福州 350012
  • 收稿日期:2013-05-09 修回日期:2013-09-20 出版日期:2014-05-25 发布日期:2014-06-06
  • 基金资助:

    林业公益性行业专项“我国典型森林类型健康经营关键技术研究”(201004002);福建省公益类科研院所专项“基于3S技术的自然保护区信息管理系统研发”(2010R1013-5)。

Application of Automatic Classification Method to Measuring Leaf Parameters of Mangrove

Le Tongchao1,2, Zhang Huiru1, Tan Fanglin2   

  1. 1. Research Institute of Forest Resources Information Techniques, CAF Beijing 100091;
    2. Fujian Academy of Forestry Fuzhou 350012
  • Received:2013-05-09 Revised:2013-09-20 Online:2014-05-25 Published:2014-06-06
  • Contact: 张会儒

摘要:

利用GIS的空间分析功能和影像自动分类原理,在软件ArcGIS10中构建“叶片信息测定器”,并利用此工具测定50个不同类型参照面的面积、周长、长度和宽度,来验证自动分类法的可行性和精度。结果表明:面积、周长、长度和宽度的相对误差小于1.3%。分别采用自动分类法、网格法和Photoshop法测定福建漳江口红树林国家级自然保护区的6种不同红树植物叶片(桐花树、白骨壤、老鼠簕、秋茄、黄槿和木榄叶片样本各150个,共900个样本)的面积、周长、叶长和叶宽等叶片信息。结果表明:木榄叶片最大,白骨壤叶片最小,桐花树和白骨壤的叶片大小较为均一,木榄和老鼠簕的叶形较为狭长,黄槿的叶形最接近圆形;自动分类法最为快速,平均测定每张叶片信息只需10 s,网格法最慢,每张叶片需要用时600 s,Photoshop法每片用时约20 s;自动分类法、网格法和Photoshop法的变异系数没有显著差异,3种方法所测结果的相关性极显著;与网格法和Photoshop法相比,自动分类法具有更快捷、高效、信息更丰富的特点。

关键词: 叶片信息, 自动分类法, 模型构建器, 红树林

Abstract:

A novel tool, named as "Calculator of leaf parameter", for measuring leaf information of mangrove was developed by using automatic classification method and spatial analysis model in ArcGIS10 software. To verify the feasibility of the automatic classification method, 50 different types of reference polygons were measured by the tool. The relative error is less than 1.3%. The area, perimeter, length and width of 900 leaves from six species of mangrove (Aegiceras corniculatum, Avicennia marina, Acanthus ilicifolius, Kandelia candel, Hibiscus tiliaceus, Bruguiera gymnorrhiza) in the Fujian Zhangjiang River Estuary Mangrove National Natural Reserve were measured by using the automatic classification, grid paper, photoshop software. The results showed that the leaf of B. gymnorrhiza was largest in the six species and A. marina's was least. The leaf sizes of A. corniculatum and A. marina were relative uniform. The leaf shapes of B. gymnorrhiza and A. ilicifolius were long and narrow and the leaf of H. tiliaceus was nearly circular. It took 10 s for the automatic classification method to measure a leaf information, it took 20 s for photoshop, and it took 600 s for grid paper. The least time was needed by the automatic classification, but the longest time was used by grid paper among the three methods. The results of the three methods were significantly correlated with each other, however the automatic classification method was faster, higher efficiency and more information than the others.

Key words: leaf parameter, automatic classification, model builder, mangrove

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