TITLE:
Investigating the Long-Term Relationship between Aerosol Optical Thickness and Land Use/Cover Change in Guangxi Coastal Cities, China
AUTHORS:
Shiheng Cheng, Xuemei Zhong, Xiangling Tang, Aofeng Wang, Haili Long
KEYWORDS:
Land Use and Land-Cover Change (LUCC), Modis, Aerosol Optical Depth (AOD), Correlation Analysis, Contribution Analysis
JOURNAL NAME:
International Journal of Geosciences,
Vol.14 No.6,
June
21,
2023
ABSTRACT: Land Use/Cover Change (LUCC) has an impact on AOD to
a certain extent. It is of great significance for ecological environment and
public health to pay attention to and explore the response mechanism of AOD to
LUCC. Based on remote sensing satellite technology, using landsat8 and MODIS
data, this paper analyzes the correlation
between different land use types and AOD in Beibu Gulf coastal urban
belt under the background of wide-scale region and long time series, and further discusses the difference
value and contribution level of each LUCC to AOD. The results show that: 1)
there is a positive correlation between PM
concentration and cultivated land, urban land, water area and other
types of land, and the correlation coefficient increases in turn, R is 0.812,
0.685, 0.627, 0.416, respectively, which indicates that the increase of
cultivated land and urban land increases PM concentration to a certain extent;
2) there is a significant negative correlation between PM concentration and
forest land, R is -0.924, The results show that the decrease of woodland is an
important factor for the increase of atmospheric particulate matter
concentration in the study area from 2015 to 2019; 3) through the contribution
analysis method, the contribution of cultivated land to AOD is the largest, followed by urban land, and the water area is the
smallest in 2015-2019, which indicates that the land use mode is closely
related to AOD. It can be helpful to reasonably plan land use types and
scientifically optimize land use structure. It can effectively reduce the concentration of air
pollution particles.