Digital evaluation of leaf area of an individual tree canopy in the apple orchard using the LIDAR measurement system
Digital evaluation of leaf area of an individual tree canopy in the apple orchard using the LIDAR measurement system
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DOI：
10.1016/j.compag.2019.105158
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发表时间：
2020-02-01
影响因子：
8.3
通讯作者：
Hocevar, M.
中科院分区：
文献类型：
--
作者：
Berk, P.;Stajnko, D.;Hocevar, M.
本文对果园叶面积的激光雷达和手动测量进行了比较。激光雷达测量是在真实的果园条件下进行的。 LIDAR 数据用于计算点数并测量各个体积元素的冠层体积。手动测量包括落叶、计数和叶面积测量。这两种类型的测量都是在 20 棵不同年龄和品种（“Golden fresh”、“Jonagold”和“Gala”）的 20 棵苹果树的 8 个体积单元中进行的。使用回归分析，我们估计了云中点数、冠层体积（激光雷达测量）和叶面积（手动测量）之间的关系。根据云中点数与冠层叶面积之间的关系建立相关系数的最大值为0.87816。建立树冠体积元体积与叶面积之间的相关系数最大值为0.80167。
This paper compares LIDAR and manual measurements of leaf area in orchards. The LIDAR measurements were performed in real orchard conditions. LIDAR data were used to count the number of points and to measure the canopy volume of individual volume elements. Manual measurements included defoliation, counting and leaf area measurements. Both types of measurements were performed in 8 volume elements for 20 apple trees of three different ages and varieties ('Golden delicious', 'Jonagold' and 'Gala'). Using regression analysis, we estimated the relation between number of points in the cloud, canopy volume (both LIDAR measurements) and the leaf area (manual measurement). The maximum value of the correlation coefficient was 0.87816, when established from the relation between the number of points in the cloud and the canopy leaf area. The maximum value of the correlation coefficient was 0.80167, when established between the volume of tree canopy volume element and the leaf area.