A Spatio-Temporal Analysis of Active Fires over China during 2003–2016
Fire is a common circumstance in the world. It causes direct casualties and economic losses, and also brings severe negative influences on the atmospheric environment. In the background of climate warming and rising population, it is important to understand the fire responses regarding the spatio-te...
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doaj-4db6340eb55e4ae2aa9bcff89e31281f2020-11-25T02:51:48ZengMDPI AGRemote Sensing2072-42922020-06-01121787178710.3390/rs12111787A Spatio-Temporal Analysis of Active Fires over China during 2003–2016Xikun Wei0Guojie Wang1Tiexi Chen2Daniel Fiifi Tawia Hagan3Waheed Ullah4School of Geographical Sciences, Nanjing University of Information Science and Technology (NUIST), Nanjing 210044, ChinaSchool of Geographical Sciences, Nanjing University of Information Science and Technology (NUIST), Nanjing 210044, ChinaSchool of Geographical Sciences, Nanjing University of Information Science and Technology (NUIST), Nanjing 210044, ChinaSchool of Geographical Sciences, Nanjing University of Information Science and Technology (NUIST), Nanjing 210044, ChinaSchool of Geographical Sciences, Nanjing University of Information Science and Technology (NUIST), Nanjing 210044, ChinaFire is a common circumstance in the world. It causes direct casualties and economic losses, and also brings severe negative influences on the atmospheric environment. In the background of climate warming and rising population, it is important to understand the fire responses regarding the spatio-temporal changes. Thus, a long-term change analysis of fires is needed in China. We use the remote sensed MOD14A1/MYD14A1 fire products to analyze the seasonal variations and long-term trends, based on five main land cover types (forest, cropland, grassland, savannas and urban areas). The fires are found to have clear seasonal variations; there are more fires in spring and autumn in vegetated lands, which are related to the amount of dry biomass and temperature. The fire numbers have significantly increased during the study period, especially from spring to autumn, and those have decreased in winter. The long-term fire trends are different when delineated into different land cover types. There are significant increasing fire trends in grasslands and croplands in North, East and Northeast China during the study period. The urban fires also show increasing trends. On the contrary, there are significant decreasing fire trends in forests and savannas in South China where it is most densely vegetated. This study provides an overall analysis of the spatio-temporal fire changes from satellite products, and it may help to understand the fire risk in the changing climate for a better risk management.https://www.mdpi.com/2072-4292/12/11/1787MODISfireland cover typelong-term trends |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Xikun Wei Guojie Wang Tiexi Chen Daniel Fiifi Tawia Hagan Waheed Ullah |
spellingShingle |
Xikun Wei Guojie Wang Tiexi Chen Daniel Fiifi Tawia Hagan Waheed Ullah A Spatio-Temporal Analysis of Active Fires over China during 2003–2016 Remote Sensing MODIS fire land cover type long-term trends |
author_facet |
Xikun Wei Guojie Wang Tiexi Chen Daniel Fiifi Tawia Hagan Waheed Ullah |
author_sort |
Xikun Wei |
title |
A Spatio-Temporal Analysis of Active Fires over China during 2003–2016 |
title_short |
A Spatio-Temporal Analysis of Active Fires over China during 2003–2016 |
title_full |
A Spatio-Temporal Analysis of Active Fires over China during 2003–2016 |
title_fullStr |
A Spatio-Temporal Analysis of Active Fires over China during 2003–2016 |
title_full_unstemmed |
A Spatio-Temporal Analysis of Active Fires over China during 2003–2016 |
title_sort |
spatio-temporal analysis of active fires over china during 2003–2016 |
publisher |
MDPI AG |
series |
Remote Sensing |
issn |
2072-4292 |
publishDate |
2020-06-01 |
description |
Fire is a common circumstance in the world. It causes direct casualties and economic losses, and also brings severe negative influences on the atmospheric environment. In the background of climate warming and rising population, it is important to understand the fire responses regarding the spatio-temporal changes. Thus, a long-term change analysis of fires is needed in China. We use the remote sensed MOD14A1/MYD14A1 fire products to analyze the seasonal variations and long-term trends, based on five main land cover types (forest, cropland, grassland, savannas and urban areas). The fires are found to have clear seasonal variations; there are more fires in spring and autumn in vegetated lands, which are related to the amount of dry biomass and temperature. The fire numbers have significantly increased during the study period, especially from spring to autumn, and those have decreased in winter. The long-term fire trends are different when delineated into different land cover types. There are significant increasing fire trends in grasslands and croplands in North, East and Northeast China during the study period. The urban fires also show increasing trends. On the contrary, there are significant decreasing fire trends in forests and savannas in South China where it is most densely vegetated. This study provides an overall analysis of the spatio-temporal fire changes from satellite products, and it may help to understand the fire risk in the changing climate for a better risk management. |
topic |
MODIS fire land cover type long-term trends |
url |
https://www.mdpi.com/2072-4292/12/11/1787 |
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