1.青海师范大学 地理科学学院, 青海 西宁 810008
2.青海师范大学;青藏高原地表过程与生态保育教育部重点实验室, 青海 西宁 810008
3.中国电建集团西北勘测设计研究院有限公司, 陕西 西安 710065
4.中国科学院;地理科学与资源研究所 陆地水循环及地表过程重点实验室, 北京 100101
5.青海黄河上游水电开发;有限责任公司龙羊峡发电分公司, 青海 海南 811899
6.青海省自然资源遥感中心, 青海 西宁 810008
7.中国科学院 水利部 成都山地灾害与环境研究所 山地灾害与地表重点实验室, 四川 成都 610041
禹琴(1995—),女(汉族),四川省江油市人,硕士研究生,研究方向为自然地理综合研究。Email:yuqinjyq@163.com。
牛百成(1987—),男(汉族),甘肃省会宁县人,博士,副教授,主要从事水土保持、物源定量判别研究。Email:niubch@foxmail.com。
收稿:2025-03-11,
修回:2025-05-15,
纸质出版:2025-10-10
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禹琴, 李奇, 方海燕, 等.基于变异系数法的龙羊峡水库消落带生态敏感性评价[J].水土保持通报,2025,45(5):245-254.
Yu Qin, Li Qi, Fang Haiyan, et al. Ecological sensitivity evaluation of water level fluctuation zone in Longyangxia reservoir based on coefficient of variation method [J]. Bulletin of Soil and Water Conservation,2025,45(5):245-254.
禹琴, 李奇, 方海燕, 等.基于变异系数法的龙羊峡水库消落带生态敏感性评价[J].水土保持通报,2025,45(5):245-254. DOI: 10.13961/j.cnki.stbctb.2025.05.002. CSTR: 32312.14.stbctb. 2025.05.002..
Yu Qin, Li Qi, Fang Haiyan, et al. Ecological sensitivity evaluation of water level fluctuation zone in Longyangxia reservoir based on coefficient of variation method [J]. Bulletin of Soil and Water Conservation,2025,45(5):245-254. DOI: 10.13961/j.cnki.stbctb.2025.05.002. CSTR: 32312.14.stbctb. 2025.05.002..
目的
2
对河流型水库消落带开展生态敏感性评价,明晰区域土壤侵蚀、生物多样性下降等生态风险,为水库生态安全保障提供决策依据。
方法
2
以黄河上游龙羊峡水库消落带为研究对象,运用GIS技术,对研究区内的土壤侵蚀敏感性、生物多样性敏感性、生境敏感性及地形敏感性4个关键因子开展评价;基于变异系数法确定各因子对综合生态敏感性的权重,计算综合生态敏感性。
结果
2
①研究区生境敏感性与生物多样性敏感性中度偏高,土壤侵蚀敏感性中度偏低,地形敏感性整体呈现较低水平。 ②地形敏感性与生境敏感性因子在综合生态敏感性计算中的权重最高,分别为38.4%和25.5%。 ③研究区内75.49%的区域综合生态敏感性处于中度偏低等级。
结论
2
龙羊峡水库消落带综合生态敏感性的主导因素为地形与生境敏感性因子,空间分布呈现出库首>库腹>库尾的特点,库首区域需优先保护。
Objective
2
Evaluation of the ecological sensitivity of water-level fluctuation zones of river-type reservoirs can clarify ecological risks, such as soil erosion and biodiversity decline in the region,in order to provide a basis for decision-making regarding the ecological safety of reservoirs.
Methods
2
The water level fluctuation zone of Longyangxia reservoir was taken as the research object, and GIS technique was used to evaluate four key factors: soil erosion sensitivity, biodiversity sensitivity, habitat sensitivity, and topographic sensitivity in the study area. The weight of each factor on comprehensive ecological sensitivity was determined, and comprehensive ecological sensitivity was calculated using the coefficient of variation method.
Results
2
① The habitat and biodiversity sensitivities were moderately high, soil erosion sensitivity was moderately low, and topographic sensitivity was generally low. ② The topographic and habitat sensitivity factors had the highest weights in the comprehensive ecological sensitivity calculation at 38.4% and 25.5%, respectively. ③ A moderately low level of comprehensive ecological sensitivity was observed in 75.49% of the study area.
Conclusion
2
Topography sensitivity and habitat sensitivity were the dominant factors in the ecological sensitivity of the water level fluctuation zone of Longyangxia reservoir. The spatial distribution is characterized by the head of the reservoir showing higher sensitivity than the belly, and the belly showing higher sensitivity than the tail. Priority should be given to protecting the reservoir head.
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