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Journal of Arid Land  2024, Vol. 16 Issue (1): 131-145    DOI: 10.1007/s40333-024-0091-2
Research article     
Spatiotemporal variations in ecosystem services and their trade-offs and synergies against the background of the gully control and land consolidation project on the Loess Plateau, China
WANG Jing1,2, WEI Yulu1,2,3, PENG Biao4,*(), LIU Siqi1,2, LI Jianfeng1,2
1Key Laboratory of Degraded and Unused Land Consolidation Engineering, Ministry of Natural and Resources, Xi'an 710075, China
2Institute of Land Engineering and Technology, Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xi'an 710021, China
3School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an 710049, China
4Shaanxi Key Laboratory of Land Consolidation, Xi'an 710064, China
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Abstract  

Studying the spatiotemporal variations in ecosystem services and their interrelationships on the Loess Plateau against the background of the gully control and land consolidation (GCLC) project has significant implications for ecological protection and quality development of the Yellow River Basin. Therefore, in this study, we took Yan'an City, Shaanxi Province of China, as the study area, selected four typical ecosystem services, including soil conservation service, water yield service, carbon storage service, and habitat quality service, and quantitatively evaluated the spatiotemporal variation characteristics and trade-offs and synergies of ecosystem services from 2010 to 2018 using the Integrated Valuation of Ecosystem Services and Trade-offs (InVEST) model. We also analysed the relationship between the GCLC project and regional ecosystem service changes in various regions (including 1 city, 2 districts, and 10 counties) of Yan'an City and proposed a coordinated development strategy between the GCLC project and the ecological environment. The results showed that, from 2010 to 2018, soil conservation service decreased by 7.76%, while the other three ecosystem services changed relatively little, with water yield service increasing by 0.56% and carbon storage service and habitat quality service decreasing by 0.16% and 0.14%, respectively. The ecological environment of Yan'an City developed in a balanced way between 2010 and 2018, and the four ecosystem services showed synergistic relationships, among which the synergistic relationships between soil conservation service and water yield service and between carbon storage service and habitat quality service were significant. The GCLC project had a negative impact on the ecosystem services of Yan'an City, and the impact on carbon storage service was more significant. This study provides a theoretical basis for the scientific evaluation of the ecological benefits of the GCLC project and the realization of a win-win situation between food security and ecological security.



Key wordsecosystem services      trade-offs and synergies      gully control and land consolidation      habitat quality      Integrated Valuation of Ecosystem Services and Trade-offs (InVEST) model      Loess Plateau     
Received: 11 July 2023      Published: 31 January 2024
Corresponding Authors: *PENG Biao (E-mail: pengbiao1988@hotmail.com)
Cite this article:

WANG Jing, WEI Yulu, PENG Biao, LIU Siqi, LI Jianfeng. Spatiotemporal variations in ecosystem services and their trade-offs and synergies against the background of the gully control and land consolidation project on the Loess Plateau, China. Journal of Arid Land, 2024, 16(1): 131-145.

URL:

http://jal.xjegi.com/10.1007/s40333-024-0091-2     OR     http://jal.xjegi.com/Y2024/V16/I1/131

Fig. 1 Location (a) and elevation (b) of the study area. Note that the boundaries of province, city, county, and district are derived from the Resource and Environmental Sciences and Data Center, Chinese Academy of Sciences (http://www.resdc.cn).
Region Number of
projects
Construction scale (hm2) Newly increased cultivated land (hm2) High-standard farmland (hm2) Investment amount (×104 CNY)
Baota District 34 7734.74 1190.80 6183.23 80,892.24
Yanchang County 16 3403.09 831.10 2698.84 34,277.77
Yanchuan County 14 3561.59 801.65 2795.02 38,754.82
Zichang City 29 4919.54 817.47 3214.24 50,370.23
Ansai District 20 2405.95 631.72 1910.32 21,229.54
Zhidan County 3 330.95 95.94 134.13 3375.71
Wuqi County 10 2159.59 838.22 1244.78 19,880.75
Ganquan County 19 3278.88 529.10 2625.58 30,824.60
Fuxian County 16 3070.66 428.47 2460.37 28,438.50
Luochuan County 13 2191.04 616.59 1782.51 22,917.90
Yichuan County 8 1873.35 611.62 1423.52 16,289.26
Huanglong County 7 820.93 157.38 707.20 7518.75
Huangling County 8 1235.91 297.66 1053.55 11,637.61
Total 197 36,986.22 7847.72 28,233.29 366,407.68
Table 1 Implementation scale of the gully control and land consolidation (GCLC) project in different regions of Yan'an City
Fig. 2 Spatial distribution of soil conservation in Yan'an City in 2010 (a) and 2018 (b) and the change in soil conservation during 2010-2018 (c)
Fig. 3 Spatial distribution of water yield in Yan'an City in 2010 (a) and 2018 (b) and the change in water yield during 2010-2018 (c)
Fig. 4 Spatial distribution of carbon storage in Yan'an City in 2010 (a) and 2018 (b) and the change in carbon storage during 2010-2018 (c)
Fig. 5 Spatial distribution of habitat quality in Yan'an City in 2010 (a) and 2018 (b) and the change in habitat quality during 2010-2018 (c)
Fig. 6 Comprehensive hotspot areas of ecosystem services in Yan'an City in 2010 (a) and 2018 (b)
Ecosystem service Soil conservation service Water yield
service
Carbon storage service Habitat quality service
Soil conservation service 1.000
Water yield service 0.786** 1.000
Carbon storage service 0.301 0.327 1.000
Habitat quality service 0.164 0.310 0.722** 1.000
Table 2 Correlation coefficients among ecosystem services
Number of
projects
Construction scale Newly increased cultivated land High-standard farmland Investment amount
Soil conservation service 0.033 -0.066 0.030 -0.157 -0.083
Water yield service 0.316 0.295 0.475 0.204 0.289
Carbon storage service -0.525 -0.602* -0.590* -0.599* -0.609*
Habitat quality service -0.390 -0.476 -0.221 -0.533 -0.487
Table 3 Correlation between the implementation data of the GCLC project and the change in ecosystem services
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