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Arid Land Geography ›› 2022, Vol. 45 ›› Issue (1): 226-236.doi: 10.12118/j.issn.1000–6060.2021.107

• Regional Development • Previous Articles     Next Articles

Trade-off analyses of ecosystem services during the reconstruction of grain production space in Loess Plateau: A case of Yulin City

YANG Haijuan1(),SUN Laiding1,ZHOU Meijun1,LI Fei1,2()   

  1. 1. College of Urban and Environmental Sciences, Northwest University, Xi’an 710127, Shaanxi, China
    2. Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, Xi’an 710127, Shaanxi, China
  • Received:2021-03-01 Revised:2021-05-04 Online:2022-01-25 Published:2022-01-21
  • Contact: Fei LI E-mail:xayhj@126.com;lifei@nwu.edu.cn

Abstract:

Grain production space reconstruction (GPSR) concentrates on the main contradictions in land system change. Exploring the trade-off of ecosystem services (ESs) in the process of GPSR scientifically is conducive to clarifying the contradictions among food security, ecological restoration, and economic development, and to promoting the construction and high-quality development of a regional ecological civilization. This research uses the evaluation model of ESs, root mean square deviation, and the method of mathematical statistics to conduct spatiotemporal comprehensive measurement of the trade-offs between ESs during GPSR in Yulin City of Shaanxi Province in China. The conclusions are as follows: (1) From 2000 to 2018, Grain for Green, deforestation and reclamation, and urban expansion were the main paths of the GPSR in Yulin. (2) From 2000 to 2018, carbon sequestration and soil conservation improved significantly during the GPSR, but the change of food supply and water yield exhibited the opposite trend. Grain for Green project promoted carbon sequestration and soil conservation significantly, and had a negative effect on food supply. Carbon sequestration, soil conservation, and food supply showed a downward trend after urban expansion. Deforestation and reclamation significantly improved food supply services. (3) GPSR leads to the improvement of trade-offs among the ESs, However, the impact of different reconstruction paths on the trade-off between ESs presents different characteristics. The effects of Grain for Green, deforestation, and reclamation on the trade-off between carbon sequestration and food supply, soil conservation, food supply, and soil conservation were the most significant, while urban expansion plays an important role in the trade-off between water yield and other services. Overall, the change of relative gain is the important reason for the different characteristics of trade-offs between the ESs in the process of GPSR.

Key words: grain production space reconstruction, trade-offs between ecosystem services, Grain for Green, deforestation and reclamation, urban expansion