| 基于GIS在苜蓿叶面积测定中的应用 |
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| 引用本文： | 陈积山,朱瑞芬,张月学.基于GIS在苜蓿叶面积测定中的应用[J].草业科学,2012,29(7):1044-1048. |
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| 作者姓名： | 陈积山 朱瑞芬 张月学 |
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| 作者单位： | 黑龙江农科院草业研究所,黑龙江哈尔滨,150086;黑龙江农科院草业研究所,黑龙江哈尔滨,150086;黑龙江农科院草业研究所,黑龙江哈尔滨,150086 |
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| 基金项目： | 国家牧草产业技术体系绥化综合试验站，黑龙江农业科学院院青年基金 |
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| 摘 要： | 简便、快速、准确的苜蓿(Medicago sativa)叶面积测量方法,对牧草作物冠层结构的对比研究具有重要意义。采用SCX 4623FH扫描仪获取苜蓿叶片300 dpi灰度图像,经R2V软件矢量化，在地理信息系统(GIS)中利用VBA宏语言提取其面积和周长等信息。结果表明,GIS提取信息与参照物实际信息相比，测定叶片周长、面积的平均相对误差为0.177%和1.68%,远小于叶面积仪器的测量误差(5%~15%),说明GIS空间分析技术应用于苜蓿叶面积测定是切实可行的。与其他叶面积测定方法相比,GIS空间分析技术测定叶面积具有精确、简捷、数据批量化等优点,适于在科研领域和生产上推广使用。
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| 关 键 词： | 地理信息系统 空间分析 苜蓿 叶面积 |
Application of spatial analysis technology to quantifying leaf area of Medicago sativa plant based on GIS |
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| CHEN Ji-shan,ZHU Rui-fen,ZHANG Yue-xue.Application of spatial analysis technology to quantifying leaf area of Medicago sativa plant based on GIS[J].Pratacultural Science,2012,29(7):1044-1048. |
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| Authors: | CHEN Ji-shan ZHU Rui-fen ZHANG Yue-xue |
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| Institution: | 1.Institute of Pratacultural Science,Heilongjiang Academy of Agricultural Science,Harbin 150086,China) |
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| Abstract: | An approach to measure the leave area of Medicago sativa was developed by using digital camera and GIS software in this study. Firstly, the pictures of M.sativa leaves were taken by the digital scanner; secondly, these pictures were vectored by R2V, and then data of perimeter and area were extracted from vectored pictures by GIS spatial analysis technology. The results of this study showed that average relative error of perimeter and area for extracted and actual values of reference were 0.177% and 1.68%, and were less than error range by leaf area apparatus (5%~15%). This study indicated that it was possible to measure leaf area of M.sativa by GIS spatial analyst technology. Compared to other methods of measuring leaf area, GIS spatial analyst technology had some merits with precision, simpleness, abundance, and could be extended in the fields of production and science research. |
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| Keywords: | GIS spatial analyst Medicago sativa leaf area |
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