Exploration of the Contribution of Fire Carbon Emissions to PM<sub>2.5</sub> and Their Influencing Factors in Laotian Tropical Rainforests
It is of great significance to understand the drivers of PM<sub>2.5</sub> and fire carbon emission (FCE) and the relationship between them for the prevention, control, and policy formulation of severe PM<sub>2.5</sub> exposure in areas where biomass burning is a major source....
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-08-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/14/16/4052 |
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| author | Zhangwen Su Zhenhui Xu Lin Lin Yimin Chen Honghao Hu Shujing Wei Sisheng Luo |
| author_facet | Zhangwen Su Zhenhui Xu Lin Lin Yimin Chen Honghao Hu Shujing Wei Sisheng Luo |
| author_sort | Zhangwen Su |
| collection | DOAJ |
| description | It is of great significance to understand the drivers of PM<sub>2.5</sub> and fire carbon emission (FCE) and the relationship between them for the prevention, control, and policy formulation of severe PM<sub>2.5</sub> exposure in areas where biomass burning is a major source. In this study, we considered northern Laos as the area of research, and we utilized space cluster analysis to present the spatial pattern of PM<sub>2.5</sub> and FCE from 2003–2019. With the use of a random forest and structural equation model, we explored the relationship between PM<sub>2.5</sub> and FCE and their drivers. The key results during the target period of the study were as follows: (1) the HH (high/high) clusters of PM<sub>2.5</sub> concentration and FCE were very similar and distributed in the west of the study area; (2) compared with the contribution of climate variables, the contribution of FCE to PM<sub>2.5</sub> was weak but statistically significant. The standardized coefficients were 0.5 for drought index, 0.32 for diurnal temperature range, and 0.22 for FCE; (3) climate factors are the main drivers of PM<sub>2.5</sub> and FCE in northern Laos, among which drought and diurnal temperature range are the most influential factors. We believe that, as the heat intensifies driven by climate in tropical rainforests, this exploration and discovery can help regulators and researchers better integrate drought and diurnal temperature range into FCE and PM<sub>2.5</sub> predictive models in order to develop effective measures to prevent and control air pollution in areas affected by biomass combustion. |
| first_indexed | 2024-03-09T12:38:51Z |
| format | Article |
| id | doaj.art-682e92296d364db9b2cb1f81216cfdcb |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-09T12:38:51Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-682e92296d364db9b2cb1f81216cfdcb2023-11-30T22:20:23ZengMDPI AGRemote Sensing2072-42922022-08-011416405210.3390/rs14164052Exploration of the Contribution of Fire Carbon Emissions to PM<sub>2.5</sub> and Their Influencing Factors in Laotian Tropical RainforestsZhangwen Su0Zhenhui Xu1Lin Lin2Yimin Chen3Honghao Hu4Shujing Wei5Sisheng Luo6Zhangzhou Institute of Technology, Zhangzhou 363000, ChinaZhangzhou Institute of Technology, Zhangzhou 363000, ChinaEarth System Science Interdisciplinary Center, University of Maryland, College Park, MD 20740, USAZhangzhou Institute of Technology, Zhangzhou 363000, ChinaZhangzhou Institute of Technology, Zhangzhou 363000, ChinaGuangdong Academy of Forestry, Guangzhou 510520, ChinaGuangdong Academy of Forestry, Guangzhou 510520, ChinaIt is of great significance to understand the drivers of PM<sub>2.5</sub> and fire carbon emission (FCE) and the relationship between them for the prevention, control, and policy formulation of severe PM<sub>2.5</sub> exposure in areas where biomass burning is a major source. In this study, we considered northern Laos as the area of research, and we utilized space cluster analysis to present the spatial pattern of PM<sub>2.5</sub> and FCE from 2003–2019. With the use of a random forest and structural equation model, we explored the relationship between PM<sub>2.5</sub> and FCE and their drivers. The key results during the target period of the study were as follows: (1) the HH (high/high) clusters of PM<sub>2.5</sub> concentration and FCE were very similar and distributed in the west of the study area; (2) compared with the contribution of climate variables, the contribution of FCE to PM<sub>2.5</sub> was weak but statistically significant. The standardized coefficients were 0.5 for drought index, 0.32 for diurnal temperature range, and 0.22 for FCE; (3) climate factors are the main drivers of PM<sub>2.5</sub> and FCE in northern Laos, among which drought and diurnal temperature range are the most influential factors. We believe that, as the heat intensifies driven by climate in tropical rainforests, this exploration and discovery can help regulators and researchers better integrate drought and diurnal temperature range into FCE and PM<sub>2.5</sub> predictive models in order to develop effective measures to prevent and control air pollution in areas affected by biomass combustion.https://www.mdpi.com/2072-4292/14/16/4052PM<sub>2.5</sub> driversfire carbon emissionsclimate factorspatial distributiontropical rainforest |
| spellingShingle | Zhangwen Su Zhenhui Xu Lin Lin Yimin Chen Honghao Hu Shujing Wei Sisheng Luo Exploration of the Contribution of Fire Carbon Emissions to PM<sub>2.5</sub> and Their Influencing Factors in Laotian Tropical Rainforests Remote Sensing PM<sub>2.5</sub> drivers fire carbon emissions climate factor spatial distribution tropical rainforest |
| title | Exploration of the Contribution of Fire Carbon Emissions to PM<sub>2.5</sub> and Their Influencing Factors in Laotian Tropical Rainforests |
| title_full | Exploration of the Contribution of Fire Carbon Emissions to PM<sub>2.5</sub> and Their Influencing Factors in Laotian Tropical Rainforests |
| title_fullStr | Exploration of the Contribution of Fire Carbon Emissions to PM<sub>2.5</sub> and Their Influencing Factors in Laotian Tropical Rainforests |
| title_full_unstemmed | Exploration of the Contribution of Fire Carbon Emissions to PM<sub>2.5</sub> and Their Influencing Factors in Laotian Tropical Rainforests |
| title_short | Exploration of the Contribution of Fire Carbon Emissions to PM<sub>2.5</sub> and Their Influencing Factors in Laotian Tropical Rainforests |
| title_sort | exploration of the contribution of fire carbon emissions to pm sub 2 5 sub and their influencing factors in laotian tropical rainforests |
| topic | PM<sub>2.5</sub> drivers fire carbon emissions climate factor spatial distribution tropical rainforest |
| url | https://www.mdpi.com/2072-4292/14/16/4052 |
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