[1]ZHANG Xiaodong,ZHAO Yinxin,CHU Xiaodong,et al.Spatial and Temporal Evolution Characteristics of Thermal Environment and Its Influencing Factors in Urban Area of Yinchuan City Based on Remote Sensing[J].Research of Soil and Water Conservation,2020,27(06):180-187.
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Spatial and Temporal Evolution Characteristics of Thermal Environment and Its Influencing Factors in Urban Area of Yinchuan City Based on Remote Sensing
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 06
Page number:
180-187
Column:
目次
Public date:
2020-10-20
- Title:
- Spatial and Temporal Evolution Characteristics of Thermal Environment and Its Influencing Factors in Urban Area of Yinchuan City Based on Remote Sensing
- Keywords:
- remote sensing; thermal environment evolution; land surface temperature; land use; vegetation coverage
- CLC:
- P461; TP79
- DOI:
- -
- Abstract:
- In order to well know the temporal and spatial characteristics of the thermal environment and its influencing factors in Yinchuan City, land surface temperature(LST)of study area of 4 years were retrieved by using Landsat remote sensing data of 4 periods in 28 years(1989—2017). The spatial distribution and the space-time evolution characteristics of variation of thermal environment, land use and vegetation coverage were studied by employing urban-heat-island Ratio index(URI), contribution index and dimidiate pixel model. Then the response relationship between LULC, vegetation changes for different periods and LST was discussed. The results showed that:(1)URI had increased by 0.138, which tended to be on the rise; meanwhile, thermal environment of 4 years showed that the spatial distribution characteristics that LST in the west of study area was higher than that in the east as a whole and the heat island area concentrated in urban built-up areas gradually because of rapid urbanization;(2)the significantly warming area accounted for 7.38% of total area, however the significantly cooling area just accounted for 1.47%, the thermal environment presented the warming trend on the whole;(3)the areas of unused land and grassland decreased year by year, and built-up land increased gradually with a high growth rate; Among 6 types of land uses, farmland, water, built-up land and unused land presented the major contribution to thermal environment;(4)the vegetation coverage of study area took on the features of relative high vegetation coverage in the east and low in the west, which was at the high level generally and presented a tendency of degeneration as a whole; LST showed the negative correlation with vegetation coverage in 4 periods. The thermal environment of Yinchuan had close relationship with LUCC and vegetation coverage, and the types of LUCC showed the significant differences of the correlations to the thermal environment contribution, while vegetation coverage had negative correlation with LST.
- References:
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Last Update:
2020-10-20