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首页> 外文期刊>Journal of Forest Planning >Estimation of Tree Density in the Juniper Forest of North-East Iran by ALOS Data
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Estimation of Tree Density in the Juniper Forest of North-East Iran by ALOS Data

机译:利用ALOS数据估算伊朗东北部杜松森林的树木密度

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摘要

High resolution satellite images of forests have a key role to play in natural resource management. We describe and evaluate a new analysis technique for, 1- Identification of the juniper's tree crown 2- Estimating juniper forest density by counting trees per hectare, 3- Estimating vegetation indices. In this paper, we introduce a new means of analysis for counting trees, calculation of the vegetation index (VI) and comparison with tree numbers per hectare. Results showed linear regression models between the normalized difference vegetation index (NDVI), the soil adjusted vegetation index (SAVI), the optimized soil-adjusted vegetation index (OSAVI) and number of trees per hectare R~2=0.79, 0.79, 0.87, CV%=19.22, 19.27, 19.22 respectively. In addition, the linear regression of counting trees with the new analysis technique by TreeVaW software and trees measured by ALOS data (Avnir-2 and Prism) will be demonstrated. In this study, we have found a useful tool for counting trees in arid and semi-arid regions, thus enabling estimation of biomass and better decision making for natural resource managers in fields of environmental benefit.
机译:森林的高分辨率卫星图像在自然资源管理中起着关键作用。我们描述和评估一种新的分析技术,用于:1-确定杜松的树冠2-通过计算每公顷树木的数量来估计杜松的森林密度,3-估计植被指数。在本文中,我们介绍了一种新的树木计数,植被指数(VI)计算以及与每公顷树木数进行比较的分析方法。结果显示归一化差异植被指数(NDVI),土壤调整植被指数(SAVI),优化土壤调整植被指数(OSAVI)和每公顷树木数量R〜2 = 0.79、0.79、0.87, CV%分别为19.22、19.27和19.22。此外,将展示使用TreeVaW软件的新分析技术对树木进行计数和通过ALOS数据(Avnir-2和Prism)测量的树木的线性回归。在这项研究中,我们发现了一个有用的工具,可以对干旱和半干旱地区的树木进行计数,从而可以估算生物量并为环境效益领域的自然资源管理者提供更好的决策。

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