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Spatial-Temporal Analysis of Water Supply Services at Different Scales in the Wuhua River Basin

  • Zhengdong ZhangEmail author
  • Yang Yang
  • Yuchan Chen
  • Tengfei Kuang
  • Jun Cao
  • Songjia Chen
  • Qingpu Li
Conference paper
  • 42 Downloads
Part of the Communications in Computer and Information Science book series (CCIS, volume 1228)

Abstract

Studying the change of water supply services and its impact mechanism is of great significance for assessing the quality of regional ecological environment. Based on the water production module of the lnVEST model, this paper analyzes the spatial and temporal evolution characteristics of water supply services at different scales (watersheds, sub-watersheds, and hydrological response units) in the Wuhua River Basin, and discusses the reasons for the spatial and temporal changes of water supply services in the study area. The results show that: First, from 1976 to 2016, the precipitation in the Wuhua River Basin first increased, then decreased, and then increased; the average temperature and the average annual evapotranspiration from 1980 to 2015 were 0.0188 ℃·a−1 and 0.5094 mm·a−1 rate increasing, respectively. Second, the main land-use type in the Wuhua River Basin were woodland and cultivated land, which together account for more than 98% of the basin area. From 1980 to 2000, it was mainly the conversion between cultivated land, woodland and grassland. From 2000 to 2015, the land use type was frequently changed, mainly converted to construction land. Third, the water supply services at different scales in the Wuhua River Basin from 1980 to 2015 basically changed. Consistently, They all decrease first and then increase. The spatial distribution of water supply services in the basins in/of different years was significantly different. Finally, from 1980 to 2015, the changes in precipitation and water supply services at different scales in the river basin were almost the same, indicating that precipitation is the main factor affecting water supply services. The land-use type with the strongest water supply capacity is construction land, followed by cultivated land, grassland, woodland, and waters. The research aims to provide a scientific basis for establishing a water resource utilization and economic development model, so as to achieve sustainable social and economic development.

Keywords

Water supply service Invest model Hydrological response unit Spatial-temporal change 

Notes

Acknowledgments

This study was jointly supported by the National Natural Foundation of China (41471147), and the Graduate Innovation Program of South China Normal University (2018LKXM038).

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Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  • Zhengdong Zhang
    • 1
    Email author
  • Yang Yang
    • 1
  • Yuchan Chen
    • 2
  • Tengfei Kuang
    • 1
  • Jun Cao
    • 1
  • Songjia Chen
    • 1
  • Qingpu Li
    • 3
  1. 1.College of GeographySouth China Normal UniversityGuangzhouChina
  2. 2.Guangzhou Institute of GeographyGuangzhouChina
  3. 3.Guangdong Institute of Ecological Environment and SoilGuangzhouChina

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