Analysis of changes in ecosystem service value in Guangzhou using GEE land use classification

doi:10.13474/j.cnki.11-2246.2025.1127

Abstract

Abstract: Quantifying the ecosystem service value (ESV) of different land use types can provide important basis for urban ecological resource protection and national spatial planning.This article takes Guangzhou city as the research area,uses the GEE platform remote sensing dataset and random forest algorithm for land use classification,combines the equivalent factor method to calculate the spatial distribution of ESV in the study area,and evaluates the impact of human activity intensity on ESV changes.The results show that: ①From 2014 to 2024,the growth rate of construction land area has reached 5.93%.The increased area was mainly converted from cultivated land,unused land,and grassland,while the land area of other land types showed a decreasing trend except for forest land.② The ESV in Guangzhou mainly comes from forests and water bodies,accounting for over 95% of the total.From 2014 to 2024,the total ESV in the study area decreased by about 112 million yuan,and the areas where ESV decreased were mainly located around the built-up areas of Guangzhou,mainly due to urban expansion.③ The spatial distribution of human activity intensity in Guangzhou city shows a characteristic of low intensity in the north and high intensity in the middle and west,and there is a negative correlation between human activity intensity and ESV.With the increase of human activity,ESV shows a downward trend.

Key words: GEE, land-use classification, equivalent factor, ecosystem service value, human activity intensity

CLC Number:

P208

ZHAO Xiaoyang, QIU Yongkang, LIU Yang, DUAN Peng, FU Leyi. Analysis of changes in ecosystem service value in Guangzhou using GEE land use classification[J]. Bulletin of Surveying and Mapping, 2025, 0(11): 170-175.

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