Construction of ecological zone based on value-risk ecological function area in the Upper Yellow River

Xie, Lixia; Bai, Yongping; Che, Lei; Qiao, Fuwei; Sun, Shuaishuai; Yang, Xuedi

doi:10.31497/zrzyxb.20210113

Cited by 17 publications

(16 citation statements)

References 8 publications

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“…The partition management of EFZUYR is of great significance for improving the ecological environment of the research area and promoting a virtuous cycle of the ecosystem. Conducting partitioning based on the different ecological environments means proposing a more targeted ecological environment management plan and future development plan [ 35 , 36 ], which is a suitable solution. The following suggestions are made for different ecological risk areas: (1) ecological restoration should be emphasized in areas with the highest, higher, and medium risks, such as Linxia City, Linxia County, Hezuo City and others with higher economic development levels.…”

Section: Discussionmentioning

confidence: 99%

Spatio-Temporal Characteristics of Landscape Ecological Risks in the Ecological Functional Zone of the Upper Yellow River, China

Qiao

Bai

Xie

et al. 2021

IJERPH

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The Ecological Functional Zone of the Upper Yellow River (EFZUYR) is a critical water-catching area in the Yellow River Basin, the ecological security of which affects the sound development of the ecosystem in the entire basin. Recently, significant land use changes have aggravated regional ecological risks and seriously affected the sustainable development of EFZUYR. In this context, this paper provides an in-depth study of the ecological risks caused by land use landscape changes. With the help of land use data and dynamic degree analysis, the land use transfer matrix, and the landscape pattern index, this paper quantifies the distribution trends of land use landscape patterns in EFZUYR from 1990 to 2018. In addition, this research explores the temporal and spatial dynamic distribution characteristics of landscape ecological risks in this functional zone. The research results show the following: (1) The transfer of land use in EFZUYR from 1990 to 2018 mainly occurred among cultivated land, grassland, and woodland, with the transferred area accounting for 87.16% of the total changed area. (2) The fragmentation degree of built-up areas is 0.1097, 0.1053, 0.0811 and 0.0762 in 1990, 2000, 2010 and 2018, respectively, with a decreasing trend. The dominance degree of grassland has been maintained at the highest level for a long time, with all values above 0.59. The separation degree and the interference degree of built-up areas were the highest and the values of the four periods were above 1.2 and 0.44, respectively. The loss degree of water was the highest, with a value above 0.67, while the value of other land use was mostly below 0.4. (3) The landscape ecological risk of EFZUYR presented a fluctuating rising, falling, and then rising trend. The spatial distribution characteristic of EFZUYR presented “high in the north and south, low in the middle.”, which has been maintained for a long time. The proportion of low-risk areas is as high as 70%, and the overall ecological risk of the region was low. However, the ecological risk of some areas, such as Linxia City and Magu County, increased. These findings can provide theoretical support for land use planning and achieving sustainable development of EFZUYR.

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Section: Discussionmentioning

confidence: 99%

Spatio-Temporal Characteristics of Landscape Ecological Risks in the Ecological Functional Zone of the Upper Yellow River, China

Qiao

Bai

Xie

et al. 2021

IJERPH

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“…Using ESV as an evaluation factor in the urban development process is an effective method to promote local ecological civilization. Referring to other studies (Xie et al, 2003; Xie et al, 2015), eight functions including food production, raw material production, gas regulation, climate regulation, hydrological regulation, soil conservation, waste treatment, and esthetic landscape were selected as evaluation factors. Using the equivalent factor method of ecosystem service value per unit area, the area of each land use type was multiplied with the corresponding ecosystem service function value coefficient, and finally all of them were added to get the total value of ecological services in the study area, where the value coefficients of urban land, rural residential land and other construction land were all assigned to 0.…”

Section: Methodsmentioning

confidence: 99%

Comprehensive evaluation of urban development suitability based on constraints and development factors: A case study of the central urban area of Zhengzhou, China

Shi,

Huo,

Zhu

et al. 2023

Progress in Physical Geography: Earth and Environment

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The overcapacity and overdevelopment of cities have led to various environmental hazards and resource depletion, making it crucial to evaluate the suitability of urban development. This research field provides scientific evidence and policy recommendations to improve land use quality and distribution. However, contemporary studies solely focus on construction land versus non-construction land competition, ignoring potential constraints from agriculture and ecology on parcel development. Using the land use situation of Zhengzhou City, this study comprehensively evaluated urban development suitability through hierarchical analysis, Delphi method, and eight-direction analysis. A multi-attribute overlay was applied with spatial restrictions from ecological protection and agricultural production, combined with urban expansion and development conditions. The results indicated that: (1) Ecological protection was critical for sustainable urban development, and areas like the Yellow River coast, northwest wetland, and southwest woodland were significant for ecological protection. High suitability areas for agricultural production were primarily located within the existing cultivated land. (2) Regarding urban expansion, the southeast of the city center was identified as the most suitable area, mainly covered by dryland. (3) Overall, the unsuitable, basically unsuitable, medium, suitable, and highly suitable areas for urban development covered 244, 921, 3024, 2224, and 944 km2, respectively. (4) The southeast-northwest direction showed prominent spatial characteristics for urban development suitability, while intensive development mode dominated the east-west direction of the city center. These findings provide significant guidance for land development and utilization, optimizing the spatial pattern, and formulating policies in Zhengzhou. Nevertheless, the weight calculation process presents a subjective factor that needs to be addressed in future research. More objective weight calculation results are necessary to achieve a more scientifically rigorous evaluation of urban development suitability.

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“…Following the methods detailed in Xie et al, expert knowledge-based assessment of ecosystem services can be used as to assess ecosystem services with known land use areas, but the spatial disparity of ecosystem services should be also considered (Xie et al, 2003). Therefore, we also referred to the economic values and planting areas of the main crops of each province within the Yongding River basin boundary in the provincial statistical yearbooks and the National Farm Product Cost-benefit Survey in 2000, 2010 and 2020.…”

Section: Methodsmentioning

confidence: 99%

Understanding the linkage between ecosystem service values and ecological risk in the Yongding River basin, China

Zhou

Qian

2022

Transactions in Earth, Environment, and Sustainability

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Evaluations of ecosystem services values (ESV) and ecological risk (ER) are crucially important for sustainable ecosystem management and ecological security. While numerous studies have been conducted for ecosystem service values and ecological risk assessment, respectively, few studies have investigated their linkage and correlation, especially from a social-ecological perspective. Additionally, the correlation is inconsistent, varying among studies conducted at different spatial scales, which makes it difficult to apply to a building regional ecological security pattern. Here, taking the Yongding River basin, China as an example, we first quantified the spatiotemporal variation of ecosystem service values and ecological risk from 2000 to 2020 using the evaluation models of ecosystem service and ecological risk. We then explored the spatiotemporal correlation between ecosystem service values and ecological risk by using bivariate spatial autocorrelation model to identify areas where prioritized ecosystem management is required in the process of urbanization and ecological restoration. We found: (1) the total ecosystem service value in the basin decreased first, but then continued to increase. The ecosystem service value in 2020 was 679.27 million yuan lower than that in 2000. The ecosystem service values had large spatial variations, with higher ecosystem service values in mountainous areas along the distribution of the river systems. (2) Ecological risk also varied in space, with most areas having low and medium risk levels in 2020, resulting from an overall continued decrease of the ecological risk, and a shift from medium, high, and extremely high ecological risk to low and extremely low in general. (3) There was a negative spatial correlation between ecosystem service value and ecological risk, showing widely distributed “Low ecological risk vs High ecosystem service value” in non-urbanized areas, and “High ecological risk vs Low ecosystem service value” located in newly constructed land in the southeast corner of the watershed dominated. This is a result of combined effects of urban expansion and ecological restoration. Our findings can provide insights on regulation of ecological risk in the Yongding River basin, help build a regional ecological security pattern, and achieve sustainable development.

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Construction of ecological zone based on value-risk ecological function area in the Upper Yellow River

Cited by 17 publications

References 8 publications

Spatio-Temporal Characteristics of Landscape Ecological Risks in the Ecological Functional Zone of the Upper Yellow River, China

Spatio-Temporal Characteristics of Landscape Ecological Risks in the Ecological Functional Zone of the Upper Yellow River, China

Comprehensive evaluation of urban development suitability based on constraints and development factors: A case study of the central urban area of Zhengzhou, China

Understanding the linkage between ecosystem service values and ecological risk in the Yongding River basin, China

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