相关实验视频

Updated: Jun 10, 2025

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

在1983年至2100年期间,基于深度学习网络的0.05度叶面积指数的数据集在中国

Hao Li^1,2, Yuyu Zhou^3,4, Xiang Zhao^5,6

¹State Key Laboratory of Remote Sensing Science, Faculty of Geographical Science, Beijing Normal University, Beijing, 100875, China.

Scientific data

|October 11, 2024

概括

一个新的高分辨率叶面积指数 (LAI) 数据集 (F0.05D-LAI) 为中国创建了1983-2100年. 这一数据集揭示了未来气候情景下的轻微绿化趋势.

科学领域:

生态生态学生态生态学
环境科学环境科学
遥感遥感遥感遥感

背景情况:

叶面积指数 (LAI) 对陆地生态系统至关重要.
现有的未来情景的LAI数据缺乏高空间分辨率.
高分辨率的LAI对于详细的生态研究至关重要.

研究的目的:

为了生成一个高分辨率的叶片面积指数 (LAI) 数据集为中国跨越1983-2100.
为植被研究和模型开发提供有价值的资源.
在各种未来气候场景下分析潜在的植被变化.

主要方法:

使用了LAI降级网络 (LAIDN) 模型.
使用空气温度,相对湿度,降水和地形数据作为输入.
以0.05°空间分辨率 (F0.05D-LAI) 生成一个月度数据集.

主要成果:

在R2 = 0.887和RMSE = 0.340.0的情况下实现了高精度.
在不同的气候区和地形上捕捉了精细的空间细节.
在未来情景下,表示植被略有变绿的趋势.

结论:

F0.05D-LAI是中国首个高分辨率的LAI数据集.
该数据集提供了关于未来气候变化下的植被动态的见解.
它支持植被研究和地球/环境科学模型开发.

更多相关视频

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

Development of an Individual-Tree Basal Area Increment Model using a Linear Mixed-Effects Approach

Development of an Individual-Tree Basal Area Increment Model using a Linear Mixed-Effects Approach

Published on: July 3, 2020

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.

Adaptations that Reduce Water Loss

Adaptations that Reduce Water Loss

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.