Results 1 to 10 of about 5,537,609 (250)

Multi-Scale Spatiotemporal Change Characteristics Analysis of High-Frequency Disturbance Forest Ecosystem Based on Improved Spatiotemporal Cube Model

open access: yesRemote Sensing, 2021
High-frequency disturbance forest ecosystems undergo complex and frequent changes at various spatiotemporal scales owing to natural and anthropogenic factors.
Yangcen Zhang   +5 more
doaj   +4 more sources

Spatiotemporal Characteristics and Pressure Fluctuations of Internal Flow in a High-Speed Centrifugal Blower for Vacuum Cleaner at Low Flow-Rate Conditions [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2022
The steady and unsteady characteristics of the internal flow in a high-speed centrifugal blower are studied by computational fluid dynamics (CFD) approach at low flow rates.
Y. Chen   +4 more
doaj   +1 more source

A Spatiotemporal Network Model for Global Ionospheric TEC Forecasting

open access: yesRemote Sensing, 2022
In the Global Navigation Satellite System, ionospheric delay is a significant source of error. The magnitude of the ionosphere total electron content (TEC) directly impacts the magnitude of the ionospheric delay.
Xu Lin   +6 more
doaj   +1 more source

Spatiotemporal Characteristics of Carbon Storage and Its Response to Land Use Changes in Fujian Province

open access: yesShuitu baochi tongbao, 2023
[Objective] The ecosystem carbon storage and its response to land use changes in Fujian Province were analysed in order to provide a reference for ecosystem protection.
Si Xiaoqian   +3 more
doaj   +1 more source

Spatiotemporal Evolution of the Cognitive Image of a Tourism Destination: An Explorative Analysis in Chengdu Based on Online Reviews

open access: yesRedai dili, 2021
It has become increasingly common for tourists to share their personal travel experiences on social media. This user-generated content with spatial references provides a rich database for tracing the evolution of the cognitive image of a tourism ...
Lei Yaqin, Wang Bo, Liu Jun, Zhao Ying
doaj   +1 more source

Characteristics of Low-Latitude Ionosphere Activity and Deterioration of TEC Model during the 7–9 September 2017 Magnetic Storm

open access: yesAtmosphere, 2022
Under the influence of space weather, abnormal disturbances in the ionosphere will distort the ionosphere model seriously and affect the global navigation satellite system negatively.
Jianfeng Li   +3 more
doaj   +1 more source

Spatiotemporal Variation of Land Surface Temperature in Henan Province of China from 2003 to 2021

open access: yesLand, 2022
Land surface temperature (LST) is a key parameter closely related to various land surface processes and surface-atmosphere interactions. Analysis of spatiotemporal variation of time-series LST may provide useful information to understand eco-climatic ...
Shifeng Li   +6 more
doaj   +1 more source

Spatiotemporal Variation Characteristics and Influencing Factors of Karst Cave Microclimate Environments: A Case Study in Shuanghe Cave, Guizhou Province, China

open access: yesAtmosphere, 2023
To systematically analyze the spatiotemporal heterogeneity, diurnal variation characteristics, and influencing factors of karst cave microclimate environments in Mahuang Cave, a cave in the Shuanghe Cave National Geological Park in Guizhou Province ...
Yong Xiong   +6 more
doaj   +1 more source

Carbon-Emission Density of Crop Production in China: Spatiotemporal Characteristics, Regional Disparities, and Convergence

open access: yesAgriculture, 2023
An analysis of carbon emissions of crop production provides paths for global warming mitigation. Existing studies have focused on the magnitude of the carbon emissions from crop production, which is unreasonable for inter-location comparison due to ...
Haoyue Wu   +6 more
doaj   +1 more source

Exploring the Influences of Water-Saving Practices on the Spatiotemporal Evolution of Groundwater Dynamics in a Large-Scale Arid District in the Yellow River Basin

open access: yesAgronomy, 2023
Water-saving practices (WSPs) have been recognized as an effective measure for reducing agricultural water use and alleviating regional water shortages in arid irrigation districts.
Weifeng Yue   +6 more
doaj   +1 more source

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