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From fluvial dynamics to eco-fluvial dynamics

International Journal of Sediment Research 2019年第6期34卷 531-536页

作者： Guojian He Hongwei Fang Jianyu Wang Tao Zhang State Key Laboratory of Hydro-science and Engineering Department of Hydraulic EngineeringTsinghua University

Sediment plays a very important role in the functioning of river *** is the basic substance for the survival of benthic animals and aquatic *** the other hand,the growth of biofilms and biodisturbance of benthos affect the sediment transport *** the increasing attention to protect aquatic ecosystems,the importance of habitats has become increasingly *** need to study the interactions among sediment,flow,riverbed deformation,and aquatic ecosystems naturally leads to the proposed discipline of eco-fluvial *** this paper,the basic concept and main research content of eco-fluvial dynamics is introduced with the Yarlung Tsangpo River as the research *** case study is an example of an aquatic ecosystem in an ever-changing environment because of the effects of climate *** results of analysis of eco-fluvial dynamics will provide a scientific basis for decision support for the government.

关键词： Fluvial dynamics Eco-fluvial dynamics Water and sediment transport Aquatic ecosystems interactive response

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The Relationship between Water Resources Use Efficiency and Scientific and Technological Innovation Level: Case Study of Yangtze River Basin in China

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Journal of Environmental & Earth Sciences 2023年第2期5卷 15-35页

作者： Guangming Yang Qingqing Gui Junyue Liu Fengtai Zhang Siyi Cheng School of Management Chongqing University of TechnologyChongqing400054China Rural Revitalization and Regional High-quality Development Research Center Chongqing University of TechnologyChongqing400054China

The Yangtze River Basin’s water resource utilization efficiency(WUE)and scientific and technological innovation level(STI)are closely connected,and the comprehension of these relationships will help to improve WUE and promote local economic growth and conservation of *** study uses 19 provinces and regions along the Yangtze River’s mainstream from 2009 to 2019 as its research objects and uses a Vector Auto Regression(VAR)model to quantitatively evaluate the spatiotemporal evolution of the coupling coordination degree(CCD)between the two subsystems of WUE and *** findings show that:(1)Both the WUE and STI in the Yangtze River Basin showed an upward trend during the study period,but the STI effectively lagged behind the WUE;(2)The CCD of the two subsystems generally showed an upward trend,and the CCD of each province was improved to varying degrees,but the majority of regions did not develop a high-quality coordination stage;(3)The CCD of the two systems displayed apparent positive spatial autocorrelation in the spatial correlation pattern,and there were only two types:high-high(H-H)urbanization areas and low-low(L-L)urbanization areas;(4)The STI showed no obvious response to the impact of the WUE,while the WUE responded greatly to the STI,and both of them were highly dependent on *** their interaction mechanisms should be the primary focus of high-quality development in the basin of the Yangtze River in the *** results give the government an empirical basis to enhance the WUE and promote regional sustainable development.

关键词： Water resource utilization efficiency(WUE) Scientific and technological innovation level(STI) Coupling coordination interactive response Yangtze River Basin

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长江经济带旅游生态效率时空演变及其与旅游经济互动响应

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旅游管理 2019年第12期

作者：王兆峰刘庆芳

运用基于非期望产出的Super-SBM模型测度长江经济带旅游生态效率，综合运用标准差椭圆、重心模型等方法勾勒旅游生态效率时空演变轨迹，借助VAR模型探讨旅游生态效率与旅游经济发展水平间的互动响应关系。结果表明：长江经济带旅游生态... 详细信息

运用基于非期望产出的Super-SBM模型测度长江经济带旅游生态效率，综合运用标准差椭圆、重心模型等方法勾勒旅游生态效率时空演变轨迹，借助VAR模型探讨旅游生态效率与旅游经济发展水平间的互动响应关系。结果表明：长江经济带旅游生态效率整体处于中等效率阶段，呈动态上升趋势，且表现出“东部＞西部＞中部”的空间分布格局；旅游生态效率形成“低低集聚、高高集聚”式的“俱乐部收敛”型“双峰”格局，向西北方向移动趋势明显；东部和中部旅游生态效率与旅游经济发展水平的脉冲响应最终趋于平稳，西部地区响应程度偏弱；旅游经济发展水平对旅游生态效率的贡献率随时间发展趋于升高，旅游生态效率对旅游经济发展水平的贡献程度随时间发展逐步降低。

关键词：旅游生态效率旅游经济互动响应 Super-SBM模型长江经济带 tourism eco-efficiency tourism economic interactive response Super-SBM model the Yangtze River Economic Belt

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