相关实验视频

Updated: Jul 28, 2025

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

使用NDVI和dNBR基于卫星的经验模型估计农业燃烧受影响的地区

Lal Mohammad¹, Jatisankar Bandyopadhyay¹, Rubel Sk²

¹Centre for Environmental Studies, Vidyasagar University, West Bengal, India; Department of Remote Sensing & GIS, Vidyasagar University, West Bengal, India.

Journal of environmental management

|May 28, 2023

概括

开放式燃烧草会给环境带来重大风险. 这项研究使用卫星数据绘制了Purba Bardhaman的农业燃烧地区的地图,揭示了Satgachia西部和Bhatar街区的高燃烧. 定期监测对于控制至关重要.

科学领域:

环境科学环境科学
遥感遥感遥感遥感
农业科学农业科学

背景情况:

开放式焚烧草是严重的全球性问题,对环境和社会产生严重影响.
地球观测卫星是监测农业燃烧活动的重要工具.

研究的目的:

在Purba Bardhaman地区使用多时间卫星数据量化估计农业烧毁面积.
为了比较不同遥感指数的有效性,用于绘制燃烧区域的地图.

主要方法:

利用了2018年10月至12月期间的Sentinel-2A和VIIRS卫星数据.
使用的多时间图像分辨技术和指数:NDVI,NBR和dNBR.
使用VIIRS活火数据 (VNP14IMGT) 来识别农业燃烧地区.

主要成果:

根据NDVI技术确定了184.82平方公里 (7.85%) 的燃烧农业用地,其中巴塔尔区的面积最高.
dNBR技术估计有192.45平方公里 (8.18%) 的农业用地被烧毁,Bhatar区面积也是最高的.
在燃烧和未燃烧表面之间的光谱区分方面,dNBR技术被证明是最有效的,与其他指数显示强烈的相关性 (R2 = 0.98).

结论:

在Purba Bardhaman燃烧农业残留物是从中央开始的,并由于早期的水作物收获而扩散.
萨特加奇亚的西部和邻近的巴塔尔区块显示出高燃活动.
持续的卫星监测对于评估防控活动的有效性和管理干燃烧至关重要.

关键词:

还有NBR和Purba bardhaman,这是一个很好的选择.燃烧农作物残留物的方法哨兵-2a 在线观看 VIIRS 活跃火灾发生火灾

更多相关视频

Integrating Remote Sensing with Species Distribution Models; Mapping Tamarisk Invasions Using the Software for Assisted Habitat Modeling SAHM

Integrating Remote Sensing with Species Distribution Models; Mapping Tamarisk Invasions Using the Software for Assisted Habitat Modeling SAHM

Published on: October 11, 2016

Remote Sensing Evaluation of Two-spotted Spider Mite Damage on Greenhouse Cotton

Remote Sensing Evaluation of Two-spotted Spider Mite Damage on Greenhouse Cotton

Published on: April 28, 2017

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.

Estimation of the Physical Quantities

Estimation of the Physical Quantities

On many occasions, physicists, other scientists, and engineers need to make estimates of a particular quantity. These are sometimes referred to as guesstimates, order-of-magnitude approximations, back-of-the-envelope calculations, or Fermi calculations. The physicist Enrico Fermi was famous for his ability to estimate various kinds of data with surprising precision. Estimating does not mean guessing a number or a formula at random. Instead, estimation means using prior experience and sound...