路域植被覆盖度非密度模型方法探讨

发布时间：2018-03-25 05:01

本文选题：路域　切入点：植被覆盖度　出处：《测绘科学》2016年01期

【摘要】：针对传统的"两流近似模型"法存在易受干扰、估算复杂、精度较低等不足的问题,文章将改进的PRO-4SAIL2物理模型反演的叶面积指数引入植被覆盖度信息提取,与常用的"两流近似模型"法相比,物理模型反演法的物理意义明确、计算简捷。最后将两种方式得到的植被覆盖度与融合的高分辨率IKONOS影像为匹配基准比较,结果表明,基于PRO-4SAIL2物理模型法得出的植被覆盖度精度更高,提高了路域植被覆盖度反演的准确性,可应用于路域植被覆盖度非密度模型中。
[Abstract]:In order to solve the problems of the traditional "two-flow approximation model", which is easy to be interfered with, complex in estimation and low in accuracy, the paper introduces the leaf area index of the improved PRO-4SAIL2 physical model into the extraction of vegetation coverage information. Compared with the conventional "two-flow approximate model" method, the physical model inversion method has a clear physical meaning and a simple calculation. Finally, the vegetation coverage obtained by the two methods is compared with the fused high-resolution IKONOS image as the matching datum. The results show that, The precision of vegetation coverage based on PRO-4SAIL2 physical model is higher, which improves the accuracy of road vegetation coverage inversion, and can be applied to the non-density model of road vegetation coverage.
【作者单位】：长沙理工大学交通运输工程学院;
【基金】：国家自然科学基金面上项目(41471421) 湖南省科技项目计划支持项目(2015WK3022)
【分类号】：P237

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