Chang Liu , Enhui Jiang , Bo Qu , Lingqi Li , Lingang Hao , Wei Zhang
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引用次数: 0
Abstract
Understanding the spatial–temporal variations in the economic-ecological benefits and driving factors within the Yellow River irrigation areas (YRIA) is crucial for ensuring high-quality socioeconomic development and ecological environment health of the Yellow River Basin, China, which is inherently water scarce. This study improved an accounting method for economic-ecological benefits in irrigation areas, based on the quantification methods for ecosystem service value and economic output value at constant prices, and quantitatively analyzed the different types of benefits and total benefits in the YRIA. The key driving factors of the economic-ecological benefits per unit area (EEBUA) in the YRIA and their spatial and temporal driving mechanisms were analyzed by the least absolute shrinkage and selection operator (LASSO) algorithm and geographically and temporally weighted regression (GTWR) model. The results revealed that the economic-ecological benefits markedly increased during 1990–2020. The YRIA in the middle and lower reaches of the Yellow River had stronger economic benefit output capabilities, while the YRIA in the upper reaches of the Yellow River had stronger ecological benefit output capabilities. The order of importance of the key factors influencing the economic-ecological benefits was precipitation (PRE), industrial water use (IW), the proportion of the cultivated land area (CL), the proportion of the arable land area (AL), and agricultural water use (AW). Under the limited total water consumption assumption, the average standardized regression coefficient of AW with the EEBUA decreased from 0.034 to −0.120 in 1995–2000, indicating a shift from a promoting to an inhibiting effect. The average standardized regression coefficient of IW notably increased from 0.37 to 1.69, indicating a rapid rise in the importance of IW for the economic-ecological benefits economic-ecological benefits in 2010–2015. This inhibiting effect of AW on the EEBUA was greater in the downstream areas of the Yellow River, and the intensity gradually increased. These findings could provide a basis for water and land resource utilization planning and the yellow river water dispatch scheme.
期刊介绍:
The ultimate aim of Ecological Indicators is to integrate the monitoring and assessment of ecological and environmental indicators with management practices. The journal provides a forum for the discussion of the applied scientific development and review of traditional indicator approaches as well as for theoretical, modelling and quantitative applications such as index development. Research into the following areas will be published.
• All aspects of ecological and environmental indicators and indices.
• New indicators, and new approaches and methods for indicator development, testing and use.
• Development and modelling of indices, e.g. application of indicator suites across multiple scales and resources.
• Analysis and research of resource, system- and scale-specific indicators.
• Methods for integration of social and other valuation metrics for the production of scientifically rigorous and politically-relevant assessments using indicator-based monitoring and assessment programs.
• How research indicators can be transformed into direct application for management purposes.
• Broader assessment objectives and methods, e.g. biodiversity, biological integrity, and sustainability, through the use of indicators.
• Resource-specific indicators such as landscape, agroecosystems, forests, wetlands, etc.