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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.


Effects of various land uses on the spatial distribution of grassland fires: (a1–a3) urban land (2000–2010); (b1–b3) rural residential land (2000–2010); (c1–c3) cultivated land (2000–2010); (d1–d3) water (2000–2010).
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sensors-17-00437-f006: Effects of various land uses on the spatial distribution of grassland fires: (a1–a3) urban land (2000–2010); (b1–b3) rural residential land (2000–2010); (c1–c3) cultivated land (2000–2010); (d1–d3) water (2000–2010).

Mentions: The trends associated with urban land, rural residential land, cultivated land and water were relatively consistent with the spatial distribution of grassland fires in 2000, 2005 and 2010. Additionally, there was a strong correlation between the spatial distribution of grassland fires and these four land uses. The closer the distance to the four land uses, the more frequently grassland fires occurred. Figure 6 shows that land use exhibited a certain degree of change over time, and the impact of land use on the spatial distribution of grassland fires remained strong. The R2 value of the relationship between urban land and the spatial distribution of grassland fires was relatively low. The number of grassland fires within 15 km of urban land was relatively low, and beyond 15 km, the number of grassland fires decreased with increasing distance from urban land. In 2000, approximately 79% of all grassland fires occurred within 10 km of cultivated land. As the area of cultivated land year increased annually, the number of grassland fires within 10 km of the cultivated land also increased. In 2005 and 2010, more than 80% of fires occurred within this distance. Although the relationship between the distance from cultivated land and the spatial distribution of grassland fires was nonlinear, it was quite striking. The relationships between the spatial distribution of grassland fires and rural residential land and the spatial distribution of grassland fires and water can be described well by linear fitting at three points in time. The fitting coefficient between the four land uses and the spatial distribution of grassland fires varied moderately in different years. The relationships between the spatial distribution of grassland fires and the four land uses in all three periods were significant.


The Influence of Land Use on the Grassland Fire Occurrence in the Northeastern Inner Mongolia Autonomous Region, China
Effects of various land uses on the spatial distribution of grassland fires: (a1–a3) urban land (2000–2010); (b1–b3) rural residential land (2000–2010); (c1–c3) cultivated land (2000–2010); (d1–d3) water (2000–2010).
© Copyright Policy - open-access
Related In: Results  -  Collection

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

sensors-17-00437-f006: Effects of various land uses on the spatial distribution of grassland fires: (a1–a3) urban land (2000–2010); (b1–b3) rural residential land (2000–2010); (c1–c3) cultivated land (2000–2010); (d1–d3) water (2000–2010).
Mentions: The trends associated with urban land, rural residential land, cultivated land and water were relatively consistent with the spatial distribution of grassland fires in 2000, 2005 and 2010. Additionally, there was a strong correlation between the spatial distribution of grassland fires and these four land uses. The closer the distance to the four land uses, the more frequently grassland fires occurred. Figure 6 shows that land use exhibited a certain degree of change over time, and the impact of land use on the spatial distribution of grassland fires remained strong. The R2 value of the relationship between urban land and the spatial distribution of grassland fires was relatively low. The number of grassland fires within 15 km of urban land was relatively low, and beyond 15 km, the number of grassland fires decreased with increasing distance from urban land. In 2000, approximately 79% of all grassland fires occurred within 10 km of cultivated land. As the area of cultivated land year increased annually, the number of grassland fires within 10 km of the cultivated land also increased. In 2005 and 2010, more than 80% of fires occurred within this distance. Although the relationship between the distance from cultivated land and the spatial distribution of grassland fires was nonlinear, it was quite striking. The relationships between the spatial distribution of grassland fires and rural residential land and the spatial distribution of grassland fires and water can be described well by linear fitting at three points in time. The fitting coefficient between the four land uses and the spatial distribution of grassland fires varied moderately in different years. The relationships between the spatial distribution of grassland fires and the four land uses in all three periods were significant.

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.