摘要
为了解乌裕尔河流域在生态环境保护和经济快速发展背景下的景观破碎化和生态环境质量变化情况,文中利用Landsat遥感影像对乌裕尔河流域景观格局变化尤其是破碎化过程进行分析,并且从景观稳定性、景观受干扰度和社会经济影响度3个方面选取16个指标构建了乌裕尔河流域生态环境质量评价指标体系;利用RBF径向基神经网络模型定量评价了乌裕尔河流域的生态环境质量。结果表明:1980—2020年间乌裕尔河流域景观破碎化程度加重,生态环境质量处于优和一般之间,并且有向不良方向退化的趋势。评价结果可作为今后乌裕尔河流域生态系统保护和恢复治理的依据,并为相似的流域生态环境质量评价提供参考。
To understand the landscape fragmentation and ecological quality changes in the Wuyuer River basin in the context of ecological protection and rapid economic development,this paper uses Landsat remote sensing images to analyze the landscape pattern changes in the Wuyuer River basin,especially the fragmentation process.And 16 indicators were selected from three aspects of landscape stability,landscape disturbance and socio-economic impact to build the evaluation index system of ecological environment quality in Wuyuer River basin.The RBF radial basis function neural network model was used to quantitatively evaluate the ecological environment quality of the Wuyuer River basin.The results show that the fragmentation of the landscape in the Wuyuer River basin increased between 1980 and 2020,and that the ecological quality was between excellent and fair,with a tendency to degrade in an undesirable direction.The evaluation results can be used as a basis for future ecosystem protection and restoration management in the Wuyuer River basin,and as a reference for similar basin ecological and environmental quality evaluations.
作者
王富武
张玉红
WANG Fuwu;ZHANG Yuhong(Key Laboratory of Heilongjiang Province for Geographical Resources and Environmental Remote Sensing,Harbin Normal University,Harbin 150025,China)
出处
《自然灾害学报》
CSCD
北大核心
2023年第1期67-75,共9页
Journal of Natural Disasters
基金
黑龙江省自然科学基金项目(D2018001)。
关键词
乌裕尔河流域
景观格局
景观破碎化
生态环境质量
径向基神经网络
Wuyuer River basin
landscape pattern
landscape fragmentation
eco-environmental quality assessment
radial basis network
