Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Light Acquisition02:16

Light Acquisition

8.5K
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.
8.5K
Adaptations that Reduce Water Loss01:57

Adaptations that Reduce Water Loss

25.6K
Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
25.6K
The Calvin Benson Cycle01:46

The Calvin Benson Cycle

4.5K
Ribulose 1,5- bisphosphate carboxylase/oxygenase (RuBisCo) is a critical enzyme that catalyzes carbon dioxide assimilation during photosynthesis. However, it is an inefficient enzyme, having an extremely slow catalytic rate. A typical enzyme can process about a thousand molecules per second; however, RuBisCo fixes only around three-carbon dioxides per second. Photosynthetic cells compensate for this slow rate by synthesizing very high amounts of RuBisCo, making it the most abundant single...
4.5K
Key Elements for Plant Nutrition02:35

Key Elements for Plant Nutrition

18.8K
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...
18.8K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Association between hemoglobin glycation index and new-onset diabetes mellitus in individuals with chronic liver disease: Findings from a prospective cohort study using CHARLS data.

Medicine·2026
Same author

Isotopic constraints in methane inversions reveal larger trends in wetland emissions with improved linkage to terrestrial water storage.

Nature communications·2026
Same author

Leaf CO<sub>2</sub> response curve fitting method matters: cross-tool assumptions spread photosynthetic parameters and bias leaf-canopy photosynthesis.

The New phytologist·2026
Same author

Triphenyl phosphate exacerbates lung cancer metastasis by activating NF-κB signaling pathway.

Environmental pollution (Barking, Essex : 1987)·2026
Same author

Efficacy and safety of holographic scraping in insomnia: A systematic review and meta-analysis of randomized controlled trials.

Medicine·2026
Same author

Maize Crops Face High Stomatal Uptake During High Exposure to Ozone in an Agroecosystem in the United States Corn Belt.

Global change biology·2026

相关实验视频

Updated: Jul 6, 2025

Measuring and Mapping Patterns of Soil Erosion and Deposition Related to Soil Carbonate Concentrations Under Agricultural Management
08:09

Measuring and Mapping Patterns of Soil Erosion and Deposition Related to Soil Carbonate Concentrations Under Agricultural Management

Published on: September 12, 2017

11.8K

以知识为导向的机器学习可以改善农业生态系统中的碳循环量化.

Licheng Liu1, Wang Zhou2,3, Kaiyu Guan4,5,6,7

  • 1Department of Bioproducts and Biosystems Engineering, University of Minnesota, St. Paul, MN, 55108, USA.

Nature communications
|January 8, 2024
PubMed
概括

这项研究引入了一个新的知识引导机器学习 (KGML) 框架,以准确量化农业生态系统的碳循环. KGML改善了对土壤有机碳变化的预测,有助于减缓气候变化和可持续农业.

更多相关视频

Author Spotlight: UAV Remote Sensing for Efficient Invasive Plant Biomass Estimation
08:47

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

Published on: February 9, 2024

1.4K
Measurement of Greenhouse Gas Flux from Agricultural Soils Using Static Chambers
11:50

Measurement of Greenhouse Gas Flux from Agricultural Soils Using Static Chambers

Published on: August 3, 2014

41.4K

相关实验视频

Last Updated: Jul 6, 2025

Measuring and Mapping Patterns of Soil Erosion and Deposition Related to Soil Carbonate Concentrations Under Agricultural Management
08:09

Measuring and Mapping Patterns of Soil Erosion and Deposition Related to Soil Carbonate Concentrations Under Agricultural Management

Published on: September 12, 2017

11.8K
Author Spotlight: UAV Remote Sensing for Efficient Invasive Plant Biomass Estimation
08:47

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

Published on: February 9, 2024

1.4K
Measurement of Greenhouse Gas Flux from Agricultural Soils Using Static Chambers
11:50

Measurement of Greenhouse Gas Flux from Agricultural Soils Using Static Chambers

Published on: August 3, 2014

41.4K

科学领域:

  • 地球系统科学 地球系统科学
  • 农业科学 农业科学
  • 机器学习 机器学习

背景情况:

  • 量化农业生态系统的碳循环对于减缓气候变化和可持续粮食生产至关重要.
  • 现有的模型 (基于流程和数据驱动) 面临不确定性,因为复杂的流程和有限的观察数据.
  • 需要在与决策相关的尺度上进行准确的量化.

研究的目的:

  • 开发和验证一个以知识为导向的机器学习 (KGML) 框架,以改善农业生态系统中的碳循环量化.
  • 为了解决传统建模方法固有的预测不确定性.
  • 提高土壤有机碳变化评估的空间分辨率.

主要方法:

  • 基于过程的模型的知识与高分辨率遥感数据和机器学习 (ML) 的整合.
  • 开发一个混合KGML框架.
  • 在美国玉米带应用和测试KGML框架.

主要成果:

  • 在传统的基于过程和黑子ML模型中,KGML框架表现出优越的性能.
  • 在量化土壤有机碳变化时,KGML实现了显著更高的空间细节 (86%高于传统方法).
  • 该研究提供了一种加强KGML和概括混合建模方法的协议.

结论:

  • KGML提供了一种强大的方法来减少农业生态系统碳循环建模中的不确定性.
  • 使用KGML,可以对土壤有机碳动态进行高分辨率的评估.
  • 开发的框架可以被通用化用于预测复杂的地球系统动态.