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The Influence of Land Use on the Grassland Fire Occurrence in the Northeastern Inner Mongolia Autonomous Region, China

View Article: PubMed Central - PubMed

ABSTRACT

Grassland, as one of the most important ecosystems on Earth, experiences fires that affect the local ecology, economy and society. Notably, grassland fires occur frequently each year in northeastern China. Fire occurrence is a complex problem with multiple causes, such as natural factors, human activities and land use. This paper investigates the disruptive effects of grassland fire in the northeastern Inner Mongolia Autonomous Region of China. In this study, we relied on thermal anomaly detection from the Moderate Resolution Imaging Spectroradiometer (MODIS) sensor to identify fire occurrences, and land use data were acquired by Landsat Thematic Mapper/Enhanced Thematic Mapper (TM/ETM). We discussed the relationship between land use and the spatial distribution of grassland fires. The results showed that the impact of land use on grassland fires was significant. Spatially, approximately 80% of grassland fires were clustered within 10 km of cultivated land, and grassland fires generally occurred in areas of intense human activity. The correlation between the spatial distribution of grassland fires and the land use degree in 2000, 2005 and 2010 was high, with R2 values of 0.686, 0.716, 0.633, respectively (p < 0.01). These results highlight the importance of the relationship between land use and grassland fire occurrence in the northeastern Inner Mongolia Autonomous Region. This study provides significance for local fire management and prevention.

No MeSH data available.


The seasonal distribution of active grassland fires in the study area. The line shows the number of active grassland fires; the bar shows the active grassland fires frequency.
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sensors-17-00437-f004: The seasonal distribution of active grassland fires in the study area. The line shows the number of active grassland fires; the bar shows the active grassland fires frequency.

Mentions: When we studied the seasonal time rule of grassland fire in the study area, we divided the season according to climatological classification method, that is, March to May is spring, June to August is summer, September to November is autumn, December to February is winter, and the results are shown in Figure 4. The grassland fire frequency was the highest in spring, reaching 57.5% of the whole year, and the grassland fire frequency was the lowest in winter, accounting for 2.15% of the annual fire occurrence. The study area is cold in winter, and the grassland is covered with snow for a long time and there are few human activities out of doors. The water content of grassland is high in summer, which is not good for the occurrence and spread of grassland fire. Therefore, the grassland fire frequency was relatively low in summer and winter. While the spring and autumn are suitable periods for human activities out of doors, human activities occur frequently, such as the farming in the spring and the sacrifice in the autumn, which have created the conditions for the grassland fires occurrence.


The Influence of Land Use on the Grassland Fire Occurrence in the Northeastern Inner Mongolia Autonomous Region, China
The seasonal distribution of active grassland fires in the study area. The line shows the number of active grassland fires; the bar shows the active grassland fires frequency.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC5375723&req=5

sensors-17-00437-f004: The seasonal distribution of active grassland fires in the study area. The line shows the number of active grassland fires; the bar shows the active grassland fires frequency.
Mentions: When we studied the seasonal time rule of grassland fire in the study area, we divided the season according to climatological classification method, that is, March to May is spring, June to August is summer, September to November is autumn, December to February is winter, and the results are shown in Figure 4. The grassland fire frequency was the highest in spring, reaching 57.5% of the whole year, and the grassland fire frequency was the lowest in winter, accounting for 2.15% of the annual fire occurrence. The study area is cold in winter, and the grassland is covered with snow for a long time and there are few human activities out of doors. The water content of grassland is high in summer, which is not good for the occurrence and spread of grassland fire. Therefore, the grassland fire frequency was relatively low in summer and winter. While the spring and autumn are suitable periods for human activities out of doors, human activities occur frequently, such as the farming in the spring and the sacrifice in the autumn, which have created the conditions for the grassland fires occurrence.

View Article: PubMed Central - PubMed

ABSTRACT

Grassland, as one of the most important ecosystems on Earth, experiences fires that affect the local ecology, economy and society. Notably, grassland fires occur frequently each year in northeastern China. Fire occurrence is a complex problem with multiple causes, such as natural factors, human activities and land use. This paper investigates the disruptive effects of grassland fire in the northeastern Inner Mongolia Autonomous Region of China. In this study, we relied on thermal anomaly detection from the Moderate Resolution Imaging Spectroradiometer (MODIS) sensor to identify fire occurrences, and land use data were acquired by Landsat Thematic Mapper/Enhanced Thematic Mapper (TM/ETM). We discussed the relationship between land use and the spatial distribution of grassland fires. The results showed that the impact of land use on grassland fires was significant. Spatially, approximately 80% of grassland fires were clustered within 10 km of cultivated land, and grassland fires generally occurred in areas of intense human activity. The correlation between the spatial distribution of grassland fires and the land use degree in 2000, 2005 and 2010 was high, with R2 values of 0.686, 0.716, 0.633, respectively (p < 0.01). These results highlight the importance of the relationship between land use and grassland fire occurrence in the northeastern Inner Mongolia Autonomous Region. This study provides significance for local fire management and prevention.

No MeSH data available.