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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.


Change in the land use degree in different years: from 2000 to 2005 (left) and from 2005 to 2010 (right).
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sensors-17-00437-f008: Change in the land use degree in different years: from 2000 to 2005 (left) and from 2005 to 2010 (right).

Mentions: In this study, the change in the regional comprehensive land use degree was used to characterize the impact of land use change on grassland fires. Over time, the land use degree in the study area changed to a certain extent. From 2000 to 2005, the increase in the land use degree per unit area in the study area was 7.68, and the increase in the land use degree per unit area from 2005 to 2010 was 5.48. The change in the land use degree per unit area from 2000 to 2005 was relatively large and mainly distributed in the southern and northwestern parts of the study area, such as the Hulunbuir grassland. From 2005 to 2010, the area of land use change per unit area was relatively small and mainly concentrated in the southern part of the study area. The land use change in the northern area was also small, and the specific changes are shown in Figure 8. The increased land use degree was characterized by the continuous development and utilization of land by humans. We analysed the changes in fire density in areas where the land use degree changed. An obvious correlation between the fire density and the land use degree can be observed in most areas.


The Influence of Land Use on the Grassland Fire Occurrence in the Northeastern Inner Mongolia Autonomous Region, China
Change in the land use degree in different years: from 2000 to 2005 (left) and from 2005 to 2010 (right).
© Copyright Policy - open-access
Related In: Results  -  Collection

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

sensors-17-00437-f008: Change in the land use degree in different years: from 2000 to 2005 (left) and from 2005 to 2010 (right).
Mentions: In this study, the change in the regional comprehensive land use degree was used to characterize the impact of land use change on grassland fires. Over time, the land use degree in the study area changed to a certain extent. From 2000 to 2005, the increase in the land use degree per unit area in the study area was 7.68, and the increase in the land use degree per unit area from 2005 to 2010 was 5.48. The change in the land use degree per unit area from 2000 to 2005 was relatively large and mainly distributed in the southern and northwestern parts of the study area, such as the Hulunbuir grassland. From 2005 to 2010, the area of land use change per unit area was relatively small and mainly concentrated in the southern part of the study area. The land use change in the northern area was also small, and the specific changes are shown in Figure 8. The increased land use degree was characterized by the continuous development and utilization of land by humans. We analysed the changes in fire density in areas where the land use degree changed. An obvious correlation between the fire density and the land use degree can be observed in most areas.

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.