相关实验视频

Updated: May 10, 2025

Field Measurement of Effective Leaf Area Index using Optical Device in Vegetation Canopy

Field Measurement of Effective Leaf Area Index using Optical Device in Vegetation Canopy

Published on: July 29, 2021

什么时候我们可以从太空中检测到? 实现对林入侵的森林光学有机学的理解

Marco D Visser^1,2, Matteo Detto¹, Félicien Meunier^3,4

¹Department of Ecology and Evolutionary Biology, Princeton University, Princeton, New Jersey, USA.

|April 28, 2025

概括

遥感可以通过使用一致的光谱信号来检测热带森林中的柳感染. 尽管自动检测存在挑战,但这一发现使全球花的量化成为可能.

科学领域:

生态生态学生态生态学
遥感遥感遥感遥感
森林科学森林科学森林科学

背景情况:

柳树对热带森林的结构和动态有很大的影响.
量化花侵袭对于了解森林健康至关重要.
遥感为大规模林监测提供了一个潜在的工具.

研究的目的:

在全球范围内分析花感染森林的光谱信号.
为了确定花光谱签名背后的机制.
评估远程传感用于柳检测的可行性.

主要方法:

编制了叶子和树冠反射频谱的大数据库.
利用空中和卫星遥感数据.
应用辐射转移模型和关于叶子化学和树冠结构的现场数据.

主要成果:

确定了一种一致的全球光谱信号,用于花感染的树冠和树.
信号主要取决于叶子的角度和叶子的施工成本.
莲花的光谱特征可以在不同的尺度和地理位置上检测到.

结论:

使用遥感可以进行大规模量化花侵袭的量化.
准确的检测需要经过验证的方法,因为非排他性特征.
需要进一步的研究来解决自动检测方面的挑战,并探索生态影响.

关键词:

阿尔贝多 (Albedo) 是指一个白色.生物多样性生物多样性叶子的角度叶子的角度叶子光学叶子光学叶子的特征叶子的特征辐射转移模型的辐射转移模型

更多相关视频

Leaf Area Index Estimation Using Three Distinct Methods in Pure Deciduous Stands

Leaf Area Index Estimation Using Three Distinct Methods in Pure Deciduous Stands

Published on: August 29, 2019

Author Spotlight: UAV Remote Sensing for Efficient Invasive Plant Biomass Estimation

Author Spotlight: UAV Remote Sensing for Efficient Invasive Plant Biomass Estimation

Published on: February 9, 2024

相关概念视频

Light Acquisition

Light Acquisition

In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.

Key Elements for Plant Nutrition

Key Elements for Plant Nutrition

Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the...

Epiphytes, Parasites, and Carnivores

Epiphytes, Parasites, and Carnivores

Plants often form mutualistic relationships with soil-dwelling fungi or bacteria to enhance their roots’ nutrient uptake ability. Root-colonizing fungi (e.g., mycorrhizae) increase a plant’s root surface area, which promotes nutrient absorption. While root-colonizing, nitrogen-fixing bacteria (e.g., rhizobia) convert atmospheric nitrogen (N2) into ammonia (NH3), making nitrogen available to plants for various biological functions. For example, nitrogen is essential for the...