Characteristics of photosynthesis and vertical canopy architecture of citrus trees under two labor-saving cultivation modes using unmanned aerial vehicle (UAV)-based LiDAR data in citrus orchards.
Characteristics of photosynthesis and vertical canopy architecture of citrus trees under two labor-saving cultivation modes using unmanned aerial vehicle (UAV)-based LiDAR data in citrus orchards.
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基于无人机激光雷达数据的柑橘园两种省力栽培模式下柑橘树光合作用和垂直冠层结构特征
DOI：
10.1093/hr/uhad018
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发表时间：
2023-03
影响因子：
8.7
通讯作者：
中科院分区：
文献类型：
--
作者：
分析比较省力栽培模式对光合作用的影响，研究其垂直冠层结构，可以改善柑橘优质高产的树体结构和省力栽培模式的选择。测定了两种省力栽培模式（宽行窄株模式和围栏模式）的1080片叶片与传统模式的光合作用情况，并测定了全叶片的氮含量和光合氮素利用效率（PNUE）。基于无人机（UAV）的光探测和测距（LiDAR）数据用于评估三种柑橘种植模式的垂直结构。结果表明，宽行窄株和传统模式下，上层叶片光合CO2同化率、气孔导度和蒸腾速率均显着高于中层，且中层显着高于下层。在围栏模式下，上层和中层之间的光合因子没有观察到显着差异。传统模式下垂直冠层分布对PNUE的影响更为显着。围栏模式下的叶片具有明显的光合优势和较高的PNUE。基于无人机的激光雷达数据通过计算激光雷达点云的密度和高度百分位数，有效揭示了柑橘树垂直冠层结构的差异。对于所有 LiDAR 密度切片，三种栽培模式的点云密度均存在显着差异，尤其是在较高的树冠高度下。省力模式，特别是围栏模式，具有明显更高的身高百分位数数据。
Analyzing and comparing the effects of labor-saving cultivation modes on photosynthesis, as well as studying their vertical canopy architecture, can improve the tree structure of high-quality and high-yield citrus and selection of labor-saving cultivation modes. The photosynthesis of 1080 leaves of two labor-saving cultivation modes (wide-row and narrow-plant mode and fenced mode) comparing with the traditional mode were measured, and nitrogen content of all leaves and photosynthetic nitrogen use efficiency (PNUE) were determined. Unmanned aerial vehicle (UAV)-based light detection and ranging (LiDAR) data were used to assess the vertical architecture of three citrus cultivation modes. Results showed that for the wide-row and narrow-plant and traditional modes leaf photosynthetic CO2 assimilation rate, stomatal conductance, and transpiration rate of the upper layer were significantly higher than those of the middle layer, and values of the middle layer were markedly higher than those of the lower layer. In the fenced mode, a significant difference in photosynthetic factors between the upper and middle layers was not observed. A vertical canopy distribution had a more significant effect on PNUE in the traditional mode. Leaves in the fenced mode had distinct photosynthetic advantages and higher PNUE. UAV-based LiDAR data effectively revealed the differences in the vertical canopy architecture of citrus trees by enabling calculating the density and height percentile of the LiDAR point cloud. The point cloud densities of three cultivation modes were significantly different for all LiDAR density slices, especially at higher canopy heights. The labor-saving modes, particularly the fenced mode, had significantly higher height percentile data.
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影响因子：
8.3
作者：
Berk, P.;Stajnko, D.;Hocevar, M.
通讯作者：
Hocevar, M.
影响因子：
6.2
作者：
Rosell, Joan R.;Llorens, Jordi;Palacin, Jordi
通讯作者：
Palacin, Jordi
DOI：
10.1098/rstb.1977.0140
发表时间：
1977-01-01
影响因子：
6.3
作者：
MONTEITH, JL
通讯作者：
MONTEITH, JL
影响因子：
6.9
作者：
Losciale P;Chow WS;Corelli Grappadelli L
通讯作者：
Corelli Grappadelli L
使用拉普拉斯算法从地面激光扫描数据中检索树枝结构属性
影响因子：
6.2
作者：
Li, Yumei;Su, Yanjun;Guo, Qinghua
通讯作者：
Guo, Qinghua