| 基于SRP模型的黄河流域中段生态脆弱性评价及驱动因素分析 |
| 摘要点击 3065 全文点击 617 投稿时间：2024-07-12 修订日期：2024-09-30 |
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| 中文关键词 生态脆弱性 SRP模型 地理探测器 空间自相关 黄河流域中段 |
| 英文关键词 ecological vulnerability SRP model geographical detector spatial autocorrelation middle section of Yellow River Basin |
| DOI 10.13227/j.hjkx.202407129 |
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| 中文摘要 |
| 生态环境脆弱性深刻制约区域经济的可持续发展,进行生态脆弱性评价是生态治理和修复的重要前提. 在多源数据的支撑下,以典型生态敏感区黄河流域中段为研究区,针对其生态本底特征选取地形、气象、地表、土壤、植被、生物丰度、人口密度和GDP等13种指标构建SRP模型评价指标体系,基于全局Moran's I指数以及LISA聚类图对2000年、2010年和2020年研究区生态脆弱性进行评价,同时借助地理探测器对其驱动因素进行分析. 结果表明：①黄河流域中段生态环境以重度脆弱性和中度脆弱性为主,占比超过50%,空间分布上呈现明显“西北高东南低”的格局,2000~2020年生态脆弱性综合指数依次为2.84、2.79和2.58,生态脆弱性等级呈稳中下降的趋势；②生态脆弱性表现出较为明显的空间聚集特征,高高聚集区主要分布在人口活动相对剧烈的极度脆弱区和重度脆弱区,低低聚集区主要集中在生态状况较好的一般脆弱区；③影响黄河流域中段生态脆弱性的空间分异的主导因素包括植被覆盖度、植被净初级生产力、气温、生物丰度和GDP,各驱动因子交互作用后的q值均表现为不同程度地增大. 研究结果可以为黄河流域中段的生态保护与环境治理提供借鉴. |
| 英文摘要 |
| The sustainable development of regional economy is seriously affected by the ecological environment, and assessing ecological vulnerability is a crucial step for implementing ecological management and rehabilitation. With the support of multi-source data, the middle section of Yellow River Basin, a typical ecologically sensitive area, was selected as the research area, and 13 indicators including terrain, meteorology, surface, soil, vegetation, biological abundance, population density, and GDP were selected to construct an SRP model evaluation index system according to its ecological background characteristics. Based on the global Moran's I index and LISA cluster map, this study analyzes the characteristics of time and spatial evolution of ecological sensitivity in the middle sections of the Yellow River in 2000, 2010, and 2020 and uses geographic detectors to detect the driving factors. The results showed that： ① The ecological environment in the middle section of the Yellow River Basin was dominated by severe vulnerability and moderate vulnerability, accounting for more than 50%, and showed a “northwest high, southeast low” spatial distribution pattern. The comprehensive index of ecological vulnerability from 2000 to 2020 was 2.84, 2.79, and 2.58, which showed a stable and decreasing trend in the level of ecological vulnerability. ②Ecological vulnerability had obvious spatial aggregation characteristics. The high aggregation areas were mainly distributed in the extremely vulnerable areas and the severely vulnerable areas with relatively intense population activities, while the low aggregation areas were mainly concentrated in the general vulnerable areas with good ecological conditions. ③ The key factors influencing the spatial evolution of ecological vulnerability in the middle section of Yellow River Basin included vegetation coverage, net primary productivity of vegetation, air temperature, biological abundance, and GDP, and the q values of each driving factor increased to varying degrees after interaction. The research results provide a reference for the conservancy and management of the ecological environment in the middle section of the Yellow River Basin. |
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