| In order to study the dynamic changes of land use vegetation coverage and surface temperature in the northern piedmont of Yinshan Mountain,various banner counties in the northern piedmont of Yinshan Mountain were selected as the study area,land use vector data and remote sensing image maps were used as the main data sources,and the spatial analysis function of GIS Envi processing image technology,extracts and processes land use,vegetation coverage and surface temperature data of each banner county in the northern foot of Yinshan Mountain in 2010,2015,and 2019,and compares and analyzes the temporal and spatial changes of land use and vegetation cover surface temperature in the northern foot of Yinshan Mountain in the past 10 years The intensity changes and concludes:(1)The overall land use structure at the northern foot of Yinshan Mountain is relatively reasonable.The area of cultivated land and unused land has decreased,and the area of construction land,woodland,grassland and water area has increased.The area of construction land has increased the most.The main source is grassland,and the area of cultivated land has decreased the most.woodland.The banner county with the largest decrease in cultivated land is Siziwang Banner,and the banner county with the largest increase in construction land is Urad Zhongqi.The center of gravity of grassland,construction land,and unused land shifts to the northwest,and the center of gravity of woodland and waters shifts to the northeast.(2)The overall vegetation coverage in the northern piedmont of Yinshan Mountain is relatively good,and the intensity of vegetation coverage changes during 2015-2019 is the most active,which dominates the vegetation coverage change in the entire northern piedmont of Yinshan Mountain.Medium coverage,medium high coverage,and high coverage increase in intensity;low coverage and very low coverage decrease in intensity;medium and high coverage areas have increased significantly,and there are vegetation coverage types with lower grades to higher grades Type conversion trend.Among the districts and counties on the northern foot of Yinshan Mountains,Damao Banner has the best vegetation status,and the worst is Urad Middle Banner.(3)The overall surface temperature of the northern foot of Yinshan Mountain changes significantly.The medium-temperature zone and the medium-high temperature area are representative of the intensity range of the northern foot of Yinshan Mountain,and the ranges of these two temperature zones are gradually increasing,causing the intensity index of the surface temperature of the northern foothill of Yinshan Mountain to increase year by year.The surface temperature of Chayouhou Banner,Chayouzhong Banner,and Wulatezhong Banner increased,and the surface temperature of the other banner counties decreased.Chayouhou Banner had the largest increase in surface temperature,and Duolun County had the largest decrease.A link between land use and vegetation cover.There is a positive correlation between land use land type and surface temperature grade,and there is a negative correlation between vegetation cover grade and surface temperature grade.The main land type leading the surface temperature in the northern foot of Yinshan Mountain is grassland,and the main vegetation grade is medium and high coverage. |
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