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Arid Land Geography ›› 2025, Vol. 48 ›› Issue (3): 480-493.doi: 10.12118/j.issn.1000-6060.2024.151

• Ecology and Environment • Previous Articles     Next Articles

Effects and driving factors of ecosystem service trade-offs in the Longdong Loess Plateau, China

HUANG Xueyu1,2(), XIU Lina1,2(), LU Zhixiang3   

  1. 1. College of Geography and Environmental Science, Northwest Normal University, Lanzhou 730070, Gansu, China
    2. Key Laboratory of Resource Environment and Sustainable Development of Oasis, Gansu Province, Lanzhou 730070, Gansu, China
    3. Key Laboratory of Ecohydrology of Inland River Basin/Gansu Qilian Mountains Ecology Research Center, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, Gansu, China
  • Received:2024-03-06 Revised:2024-06-17 Online:2025-03-25 Published:2025-03-14
  • Contact: XIU Lina E-mail:lhxzlucky@163.com;xiulina@nwnu.edu.cn

Abstract:

Quantifying spatial and temporal changes in ecosystem services and analyzing trade-offs and influencing factors are essential for restoring regional ecological functions. This study focuses on the Longdong Loess Plateau of Gansu Province, China, evaluating four key ecosystem services: water yield, grain provision, soil conservation, and carbon sequestration. The assessment was conducted using the InVEST model, and the Sen+Mann-Kendall method was applied to analyze spatial and temporal change trends of ecosystem services from 2001 to 2020. Trade-off effects among ecosystem services were quantified through correlation analysis and root mean square deviation. Additionally, the geodetector method was used to explore the driving factors of these trade-offs. The findings indicated that: (1) Over the past 20 years, water yield, grain provision, and soil conservation in the Longdong Loess Plateau showed no significant increases, while carbon sequestration demonstrated a notable upward trend. (2) Trade-off effects among ecosystem services exhibited spatial variation. Trade-offs between water yield and grain provision were primarily concentrated in the southeastern region of the Longdong Loess Plateau, while trade-offs between grain provision and soil conservation were distributed in the southern region of the Longdong Loess Plateau, and the degree of trade-offs declined over time. The trends of the degree of trade-offs between grain provision and carbon sequestration showed significant regional increases. (3) The trade-off effects of ecosystem services were influenced by a combination of natural and human factors, with annual precipitation identified as the primary driver. This study provides a scientific basis for regional ecological planning and strategies to enhance ecosystem service quality by addressing trade-off effects.

Key words: trends analysis, trade-offs/synergy, root mean square deviation, geodetector, Longdong Loess Plateau