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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.


Land use degree in the study area: (a) land use degree in 2000; (b) land use degree in 2005; (c) land use degree in 2010.
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sensors-17-00437-f007: Land use degree in the study area: (a) land use degree in 2000; (b) land use degree in 2005; (c) land use degree in 2010.

Mentions: Figure 7 shows the spatial distribution of the land use degree in 2000, 2005 and 2010. In general, the land use degree in the southern part of the study area was generally higher than that in the northern part. From 2000 to 2010, the areas of urban land and residential land with high land use degrees increased slowly. The increase in the total area was only 82 km2, and its annual growth was less than 10 km2. Because human construction land accounted for only approximately 1% of the total area of the study region, the change in the land use degree was small. Statistics showed that the land use degrees in different administrative regions exhibited small changes. The land use degrees per unit area of 36 administrative regions in 2000, 2005 and 2010 are shown in Table 7. The land use degrees per unit area in different administrative regions exhibited considerable differences. XinBaragZouqi exhibited one the smallest land use degrees per unit area of all administrative regions. The largest land use degree per unit area was observed in the Ulanhot Shi, with a land use degree per unit area of more than 270 in the three periods. The land use degrees per unit area of Tongliao Shi and MolidawaZizhiqi were second only to that of the Ulanhot Shi. These degrees per unit area all exceeded 250, and the land use degrees per unit area in the other most administrative units were all between 200 and 240.


The Influence of Land Use on the Grassland Fire Occurrence in the Northeastern Inner Mongolia Autonomous Region, China
Land use degree in the study area: (a) land use degree in 2000; (b) land use degree in 2005; (c) land use degree in 2010.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

sensors-17-00437-f007: Land use degree in the study area: (a) land use degree in 2000; (b) land use degree in 2005; (c) land use degree in 2010.
Mentions: Figure 7 shows the spatial distribution of the land use degree in 2000, 2005 and 2010. In general, the land use degree in the southern part of the study area was generally higher than that in the northern part. From 2000 to 2010, the areas of urban land and residential land with high land use degrees increased slowly. The increase in the total area was only 82 km2, and its annual growth was less than 10 km2. Because human construction land accounted for only approximately 1% of the total area of the study region, the change in the land use degree was small. Statistics showed that the land use degrees in different administrative regions exhibited small changes. The land use degrees per unit area of 36 administrative regions in 2000, 2005 and 2010 are shown in Table 7. The land use degrees per unit area in different administrative regions exhibited considerable differences. XinBaragZouqi exhibited one the smallest land use degrees per unit area of all administrative regions. The largest land use degree per unit area was observed in the Ulanhot Shi, with a land use degree per unit area of more than 270 in the three periods. The land use degrees per unit area of Tongliao Shi and MolidawaZizhiqi were second only to that of the Ulanhot Shi. These degrees per unit area all exceeded 250, and the land use degrees per unit area in the other most administrative units were all between 200 and 240.

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.