College of Agronomy, Northwest A & F University, Xianyang 712100, China.
The Research Center of Recycle Agricultural Engineering and Technology of Shaanxi Province, Xianyang 712100, China.
Int J Environ Res Public Health. 2022 Aug 3;19(15):9547. doi: 10.3390/ijerph19159547.
The Yellow River Basin in Shaanxi (YRBS) has a relatively fragile ecological environment, with severe soil erosion and a high incidence of natural and geological disasters. In this study, a river basin landscape ecological risk assessment model was constructed using landscape ecology principles to investigate the temporal and spatial evolution, as well as the spatial autocorrelation characteristics of landscape ecological risks in the YRBS over a 20-year period. The main findings from the YRBS were that the land use types changed significantly over the span of 20 years, there was spatial heterogeneity of the landscape pattern, and the ecological risk value was positively correlated. The threat of landscape ecological risks in YRBS is easing, but the pressure on the ecological environment is considerable. This study provides theoretical support administrative policies for future ecological risk assessment and protection, restoration measures, and control in the Yellow River Basin of Shaanxi Province.
陕西省黄河流域（YRBS）生态环境较为脆弱，水土流失严重，自然灾害和地质灾害频发。本研究运用景观生态学原理，构建了流域景观生态风险评估模型，以调查 20 年来 YRBS 景观生态风险的时空演变及空间自相关特征。研究结果表明，YRBS 的土地利用类型在 20 年内发生了显著变化，景观格局具有空间异质性，生态风险值呈正相关。YRBS 的景观生态风险威胁正在缓解，但生态环境压力仍然较大。本研究为陕西省黄河流域未来的生态风险评价、保护、恢复措施和控制提供了理论支持和政策建议。
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