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首页> 外文会议>International Conference on eDemocracy eGovernment >Dasometric Analysis Applying Terrestrial Laser Scanner and Conventional Techniques for the Estimation of Aboveground Biomass in a Forest of the Inter-Andean Valley in Ecuador
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Dasometric Analysis Applying Terrestrial Laser Scanner and Conventional Techniques for the Estimation of Aboveground Biomass in a Forest of the Inter-Andean Valley in Ecuador

机译：应用陆地激光扫描仪和常规技术进行的量测分析，估算厄瓜多尔安第斯山间山谷森林中的地上生物量

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Monitoring of forest ecosystems through the knowledge of aboveground biomass (AGB) is fundamental for the adequate development of management plans in natural resources and for the improvement of wellbeing of the local as well as global population. The amount of biomass is estimated by means of allometric equations that include dasometric variables such as the normal diameter of the tree (D), whose values are determined by applying conventional techniques of forest measurements and alternative methodologies such as the terrestrial laser scanner system. The main aim of the current study has been to analyze the D values of the trees applying a static terrestrial laser-scanning (TLS) technology and conventional techniques (CT) to estimate the AGB in a sector of the “La Armenia” forest, in the central Inter-Andean Valley of Ecuador. Two plots have been defined, with the purpose of optimizing the capture and handling of the terrestrial LIDAR information obtained through the Faro Focus 3D laser scanner, as well as facilitating the field work using a tape measure in the determination of the D of the trees from the generated three-dimensional models. Hereby, the D of 93 trees located within the project's application area have been yielded digitally. We verified statistically that the values of the D of the studied trees applying TLS, are similar within errors as those obtained using TC, given that the hypothesis of equality has been accepted when performing the Z and Chi squared tests, in addition to the Pearson coefficient (R2 = 0.995), which indicated a strong correlation of the given variables. Finally, a total of 334,111 tn / ha of forest AGB has been estimated. The amount of biomass estimated based on direct observations of the territory through the application of TLS, provides essential information for decision making in the implementation of policies on forest management in the country.
机译：通过了解地上生物量（AGB）来监测森林生态系统对于适当制定自然资源管理计划以及改善当地以及全球人口的福祉至关重要。利用包括等量线变量（例如树木的正常直径（D））的异速方程来估算生物量，该变量的值是通过应用常规的森林测量技术和其他方法（例如陆地激光扫描仪系统）确定的。当前研究的主要目的是利用静态陆地激光扫描（TLS）技术和常规技术（CT）分析树木的D值，以估计“亚美尼亚”森林区域内的AGB。厄瓜多尔中部安第斯山脉中部山谷。定义了两个图，目的是优化对通过Faro Focus 3D激光扫描仪获得的地面LIDAR信息的捕获和处理，以及使用卷尺方便地确定来自树木的D生成的三维模型。因此，已经数字化生成了位于项目应用区域内的93棵树的D。我们进行了统计验证，应用TLS的研究树的D值在误差范围内与使用TC获得的值相似，这是因为除Pearson系数外，在执行Z和卡方检验时，均接受了均等的假设（R 2 = 0.995），这表明给定变量具有很强的相关性。最终，估计森林总面积为334,111吨/公顷。根据通过使用TLS对该地区的直接观察，估算的生物量数量为该国实施森林管理政策的决策提供了重要信息。

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