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CISK、蒸发-风反馈机制和热带大气30—60天振荡 被引量:4
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作者 赵强 刘式适 《气象学报》 CSCD 北大核心 1996年第4期417-426,共10页
建立一个包含CISK机制和蒸发-风反馈机制(Evaporation-WindFeedbackMechanism,简写为:EWFM)的热带大气运动的无耗散、线性斜压半地转模式,引入反映CISK的无量纲凝结潜热参数η和反... 建立一个包含CISK机制和蒸发-风反馈机制(Evaporation-WindFeedbackMechanism,简写为:EWFM)的热带大气运动的无耗散、线性斜压半地转模式,引入反映CISK的无量纲凝结潜热参数η和反映EWFM的无量纲参数α,并求得模式系统的解析解。动力学分析和模式大气的计算结果进一步说明了CISK和EWFM的共同作用是激发和驱动热带大气低频振荡的重要物理过程。 展开更多
关键词 CISK 低频振荡 蒸发 风反馈机制 热带气象 大气
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蒸发-风反馈机制的进一步研究 被引量:14
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作者 李崇银 《热带气象学报》 CSCD 1996年第3期195-199,共5页
对蒸发-风反馈的作用进行了简单动力学研究。结果表明,蒸发-风反馈不能像波动-CISK那样改变热带大气波动的性质(减缓移速),不可能单独成为激发热带大气季节内振荡的动力学机制。在积云对流加热和蒸发-风反馈的共同作用下,... 对蒸发-风反馈的作用进行了简单动力学研究。结果表明,蒸发-风反馈不能像波动-CISK那样改变热带大气波动的性质(减缓移速),不可能单独成为激发热带大气季节内振荡的动力学机制。在积云对流加热和蒸发-风反馈的共同作用下,CISK-Kelvin波和CISK-Rossby波可以不稳定发展,共同作用比单独的积云对流加热反馈作用能更全面合理地解释热带大气季节内振荡的活动。因此。 展开更多
关键词 大气动力学 蒸发反馈机制 风反馈机制
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Research Progress on Ecological Risk Assessment based on M ultifunctional Landscape 被引量:2
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作者 LIN Dayi LIU Fangyu +2 位作者 ZHANG Jiping HAO Haiguang ZHANG Qiang 《Journal of Resources and Ecology》 CSCD 2021年第2期260-267,共8页
The unreasonable utilization and trade-offs of the multifunctional landscape is one of the important causes leading to ecological risk.Quantifying the relationship,heterogeneous process and driving mechanism between l... The unreasonable utilization and trade-offs of the multifunctional landscape is one of the important causes leading to ecological risk.Quantifying the relationship,heterogeneous process and driving mechanism between landscape function and human well-being can provide a scientific basis for achieving a win-win situation of regional development and ecological protection,and it is also an important issue for relevant scientific research.In this paper,we reviewed the current state of knowledge regarding landscape function and ecological risk,identified the feedback mechanisms among landscape change,landscape function,human well-being and ecological risk,constructed the ecological risk assessment framework based on landscape functions,and sorted out the key scientific issues and research trends.The interconnections between the multifunctional landscape,human well-being,and ecological risk comprise an important scientific issue in ecological risk assessment.However,there is a lack of understanding of the spatial-temporal characteristics of landscape function trade-offs,and there is also a lack of systematic and standardized methods for the identification and comprehensive evaluation of landscape functions.Exploring ecological risk management and the methodologies that integrate the two processes of nature and humanity is an inevitable trend for future research.Coupling landscape structure,function and process into ecological risk assessment,as well as focusing on the combination of human well-being,landscape function trade-off and ecological risk control policy design are important issues to be studied. 展开更多
关键词 landscape function ecological risk human well-being feedback mechanism management regulation
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