|
| 淮河流域生态风险与生态韧性时空演变及其空间耦合关系研究 |
| Spatial and Temporal Evolution of Ecological Risk and Ecological Resilience in the Huaihe River Basin and Their Spatial Coupling Relationships-Taking Huoqiu County as an Example |
| 投稿时间：2024-11-19 修订日期：2025-02-11 |
| DOI： |
| 中文关键词: 淮河流域 霍邱县 生态风险 生态韧性 时空演变 |
| 英文关键词: Huaihe River Basin, Huoqiu County, Ecological Risk, Ecological Resilience, Spatial and Temporal Evolution |
| 基金项目: |
|
| 摘要点击次数: 182 |
| 全文下载次数: 0 |
| 中文摘要: |
| 随着用地的持续扩张、自然灾害的频发，沿河区域面临持续的灾害风险及生态退化现象，生态脆弱性显著。开展霍邱县生态风险与韧性时空演变与耦合分析对于改善沿河生态脆弱性具有重要意义。本文运用景观生态风险指数模型、生态韧性模型分析2002-2022年霍邱县生态风险与生态韧性时空演化特征，并运用四象限法、耦合协调度模型划分霍邱县生态风险与生态韧性的生态分区和耦合协调分区。结果表明：（1）2002-2022年，霍邱县生态风险水平整体呈下降趋势，生态韧性水平呈现先下降后上升的趋势。（2）在空间分布方面，霍邱县生态风险呈现出以水域为中心向四周扩散的空间分布特征，高风险区大多分布于霍邱县城西湖、城东湖行蓄洪区；生态韧性呈现出“中东部高，四周低”的空间分布格局，高韧性区大都集中在以水域和林地为主的高植被覆盖区域；两者具有空间一致性。（3）霍邱县“韧性-风险”生态分区与耦合协调性呈相似性，生态分区以“低韧性-低风险、高韧性-高风险”为主，耦合协调分区以中度失调和中度协调为主，较高耦合协调区主要分布于以城西湖、城东湖为中心的水域。研究结果可为霍邱县的生态风险管理和生态韧性提升提供科学依据，也为淮河流域生态脆弱区域可持续发展提供新的视角和途径。 |
| 英文摘要: |
| With the continuous expansion of land use and frequent occurrence of natural disasters, the region along the river faces continuous disaster risk and ecological degradation phenomenon, and the ecological vulnerability is remarkable. It is of great significance to carry out the spatial and temporal evolution and coupling analysis of ecological risk and resilience in Huoqiu County to improve the ecological vulnerability along the river. This paper uses the landscape ecological risk index model and ecological toughness model to analyse the spatial and temporal evolution characteristics of ecological risk and ecological toughness in Huoqiu County from 2002 to 2022, and uses the four-quadrant method and the coupling coordination degree model to divide the ecological risk and ecological toughness of Huoqiu County into ecological and coupling coordination zones. The results show that: (1) From 2002 to 2022, the level of ecological risk in Huoqiu County shows an overall decreasing trend, and the level of ecological toughness shows a decreasing and then increasing trend. (2) In terms of spatial distribution, the ecological risk of Huoqiu County presents the spatial distribution characteristics of spreading to the surroundings centred on the waters, and the high-risk areas are mostly distributed in the West Lake and the East Lake flood storage area of Huoqiu County; the ecological resilience presents the spatial distribution pattern of "high in the middle of the east and low in the surroundings", and the high-resilience areas are mostly concentrated in high vegetation-covered areas dominated by the waters and the forested areas; both of them have a decreasing trend. The high toughness area is mostly concentrated in the high vegetation cover area which is dominated by water and woodland; both of them have spatial consistency. (3) Huoqiu County's "toughness-risk" ecological zoning and coupling co-ordination are similar, with "low toughness-low risk, high toughness-high risk" as the main ecological zoning, and "moderate dissonance and moderate co-ordination" as the main coupling co-ordination zoning, with higher coupling co-ordination zones. The higher coupling coordination zones were mainly distributed in the waters centred on the West Lake and the East Lake. The results of the study can provide scientific basis for the ecological risk management and ecological resilience enhancement in Huoqiu County, and also provide new perspectives and ways for the sustainable development of ecologically fragile regions in the Huaihe River Basin. |
|
View Fulltext
查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
