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Article

Evaluation of Soil and Water Conservation Function in Dingxi City, Upper Yellow River Basin

Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
Academic Editors: Maria Mimikou and Domenico Cicchella
Water 2022, 14(18), 2919; https://doi.org/10.3390/w14182919
Received: 16 August 2022 / Revised: 13 September 2022 / Accepted: 14 September 2022 / Published: 18 September 2022
Dingxi City is located in the upper reaches of the Yellow River Basin, at the intersection between the Loess Plateau and West Qinling Mountains. The water and soil conservation function of Dingxi City is very important and have become key constraining factors for economic and social development. Due to the fragmented terrain and landscape patches, high spatial accuracy in the assessment of water and soil conservation is required for proper management. In this study, we introduced an index system for the evaluation of soil and water conservation functions, including various influencing factors. The results showed that area percentages of the five levels (lower, low, medium, high, and higher) in soil conservation were 6.24, 6.25, 23.49, 30.95, and 33.07, respectively, and the areas with higher soil conservation were mainly concentrated in the hilly and gully areas of the Loess Plateau with low vegetation coverage. The percentages of water conservation in the five levels (lower, low, medium, high, and higher) were 40.49, 21.78, 16.66, 7.9, and 13.11, respectively, and the areas with higher water conservation were concentrated in Min County and Zhang County, with the most abundant precipitation and highest vegetation coverage. In addition, functional areas of soil and water conservation had obvious spatial heterogeneity. Among them, the proportion of high-grade functional areas for soil conservation decreased with an increase in precipitation, whereas a high proportion of high-grade functional areas for water conservation was concentrated in areas with precipitation of more than 600 mm. The conflict between agricultural production and ecological protection of soil and water conservation is prominent, and areas with serious conflict are concentrated in the central and northern areas of Dingxi City. Based on this, we suggest a spatial layout guidance for agricultural production and ecological protection, providing a scientific basis for decision-making that supports ecological protection and high-quality sustainable development in Dingxi City. View Full-Text
Keywords: soil conservation; water conservation; important functional areas; Dingxi City; Yellow River Basin soil conservation; water conservation; important functional areas; Dingxi City; Yellow River Basin
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MDPI and ACS Style

Li, J. Evaluation of Soil and Water Conservation Function in Dingxi City, Upper Yellow River Basin. Water 2022, 14, 2919. https://doi.org/10.3390/w14182919

AMA Style

Li J. Evaluation of Soil and Water Conservation Function in Dingxi City, Upper Yellow River Basin. Water. 2022; 14(18):2919. https://doi.org/10.3390/w14182919

Chicago/Turabian Style

Li, Jiuyi. 2022. "Evaluation of Soil and Water Conservation Function in Dingxi City, Upper Yellow River Basin" Water 14, no. 18: 2919. https://doi.org/10.3390/w14182919

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