| 摘要: |
| 生态安全与人类福祉密切相关,因此量化区域生态风险能够有效地对高风险地区进行防范,同时更利于区域可持续发展。本文通过InVEST模型测算黄河三角洲区域1990年、2000年、2010年、2020年生态系统碳存储、生境质量和土壤保持3种生态系统服务的物理量,根据测算结果构建生态风险评估模型,在此基础上对黄河三角洲生态风险进行时空格局演变特征分析。结果表明:1)黄河三角洲区域生态系统服务整体弱化,在建设用地、水域等区域最为明显。2)1990—2020年黄河三角洲区域碳存储整体呈现内陆高沿海低的空间格局,生境质量空间波动范围增大,土壤保持能力降低。3)黄河三角洲区域生态风险有上升趋势。沿海水域及建设用地区域受风险概率较大,而林草地等植被覆盖区域生态风险低。研究结果可为黄河流域生态保护和高质量发展提供决策支持与参考。 |
| 关键词: 黄河三角洲 生态系统服务 生态风险 时空格局 |
| DOI：10.11759/hykx20220429003 |
| 分类号: |
| 基金项目:国家自然科学青年基金(42106215);山东省自然科学青年基金(ZR202103030691) |
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| Ecological risk assessment of the Yellow River Delta based on ecosystem services |
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GUO He1, FAN Yan-guo1, GUAN Qing-chun1, FAN Bo-wen2, WANG Yong3
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1.College of Oceanography and Space Information, China University of Petroleum, Qingdao 266580, China;2.College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001, China;3.Yantai Geographic Information Center, Yantai 264000, China
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| Abstract: |
| Ecological security is closely related to human well-being; thus, quantifying regional ecological risks can effectively prevent high-risk areas and benefit regional sustainable development. In this study, the InVEST model was used to calculate the physical quantities of ecosystem carbon storage, habitat quality, and soil conservation in the Yellow River Delta region in 1990, 2000, 2010, and 2020. On the basis of the measurement results, an ecological risk assessment model was constructed. This study analyzed the evolution characteristics of the temporal and spatial patterns of ecological risks in the Yellow River Delta. The results showed that 1) the overall weakening of ecosystem services in the Yellow River Delta region was the most obvious in areas such as construction sites and wetlands. 2) From 1990 to 2020, the overall carbon storage in the Yellow River Delta region showed a spatial pattern of high inland and low coastal areas, the spatial fluctuation range of habitat quality increased, and the soil retention capacity decreased. 3) The ecological risk in the Yellow River Delta region increased. The ecological risk was high in coastal waters and construction sites and low in areas covered by vegetation, such as forests and grasslands. The research results can provide support and reference for decisions on ecological protection and high-quality development in the Yellow River Basin. |
| Key words: Yellow River Delta ecosystem services ecological risk spatiotemporal pattern |
