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Strategies for Water Security and Aquatic Ecosystem Restoration in the Yangtze River Economic Belt

Hu Chunhong, Zhang Shuanghu

Strategic Study of CAE 2022, Volume 24, Issue 1,   Pages 166-175 doi: 10.15302/J-SSCAE-2022.01.018

Abstract: In this paper, we analyze the major issues regarding water security and aquatic ecosystem protectionThe strategies for restoring the damaged aquatic ecosystem are to construct substitute habitats in the

Keywords： Yangtze River Economic Belt     water security     aquatic ecosystem restoration     flood control safety     habitat    

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A case for assessing

Ian T. RILEY

Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 4,   Pages 568-582 doi: 10.15302/J-FASE-2019270

Abstract: semi-arid and arid climatic zones—are too frequently degraded systems that will not provide the needed ecosystem

Keywords： actinorrhizal trees     agroforestry     climate change     ecosystem restoration    

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Ecosystem health assessment of urban rivers and lakes

ZHANG Fengling, LIU Jingling, YANG Zhifeng, LI Yongli

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 2,   Pages 209-217 doi: 10.1007/s11783-008-0007-y

Abstract: The assessment of the ecosystem health of urban rivers and lakes is the scientific basis for their managementand ecological restoration.Water environmental quality, structure and function of the aquatic ecosystem, and the structure of waterfrontSome suggestions on scientific management and ecological restoration of the six lakes were proposed:into these lakes; $aTo improve the hydrological conditions of six lakes; $bTo rehabilitate the aquatic ecosystem

Keywords： unhealthy     management     ecological restoration     Zhonghai     non-point pollution    

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A CASE FOR ASSESSING ALLOCASUARINA AND CASUARINA SPP. FOR USE IN AGROECOSYSTEM IMPROVEMENT IN SEMI-ARID AREAS WITH A FOCUS ON CENTRAL ANATOLIA, TURKEY

Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 4,   Pages 568-582 doi: 10.15302/J-FASE -2019270

Abstract: and arid climatic zones—are too frequently degraded systems that will not provide the needed ecosystem

Keywords： actinorrhizal trees / agroforestry / climate change / ecosystem restoration    

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Ecological Change Assessment and Protection Strategy in the Yellow River Basin

Mou Xuejie, Zhang Xiao, Wang Xiahui, Wang Jinnan, Rao Sheng, Huang Jin, Chai Huixia

Strategic Study of CAE 2022, Volume 24, Issue 1,   Pages 113-121 doi: 10.15302/J-SSCAE-2022.01.012

Abstract: security barrier, we systematically evaluate the current status and changes of the Yellow River Basin ecosystemThen we propose future ecological protection and restoration strategies.Our research shows that the ecosystem of the Yellow River Basin has maintained a stable structure inThe overall quality of the ecosystem, particularly in the middle reaches, has improved, and degradationTherefore, we propose that ecological protection and restoration of the Yellow River Basin should be

Keywords： Yellow River Basin     ecosystem     assessment     conservation and restoration    

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CHALLENGES PROVIDING MULTIPLE ECOSYSTEM BENEFITS FOR SUSTAINABLE MANAGED SYSTEMS

Frontiers of Agricultural Science and Engineering 2022, Volume 9, Issue 2,   Pages 170-176 doi: 10.15302/J-FASE-2022444

Abstract: There is an increasing demand for agriculture to provide food security as well as a range of other ecosystemDepending on ecosystem management, different practices may involve trade-offs and synergies, and these

Keywords： crop diversification / ecosystem services / food security / sustainable cropping systems    

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The research of control and onservation technologies of Liaohe River conservation area

Duan Liang,Song Yonghui,Bai Lin,Xiang Liancheng,Zeng Ping,Peng Jianfeng,Tian Zhiyong

Strategic Study of CAE 2013, Volume 15, Issue 3,   Pages 107-112

Abstract: The goal of the research was to restore a healthy river ecosystem including flood control,good waterconsiderate the interaction and relationships of hydraulic project,pollution control project,ecological restorationWe have completed five special researches of land use,ecosystem restoration,integrated river management

Keywords： Liaohe River conservation area     control     conservation     ecosystem restoration    

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EMERGY analysis for sustainability evaluation of the Baiyangdian wetland ecosystem in China

Weiqing MENG, Cui HAO, Hongyuan LI, Meiting JU,

Frontiers of Environmental Science & Engineering 2010, Volume 4, Issue 2,   Pages 203-212 doi: 10.1007/s11783-010-0015-6

Abstract: Methods of EMERGY analysis were applied to illustrate the wetland ecosystem, to evaluate the economic

Keywords： EMERGY analysis     sustainability     wetland ecosystem     indicators    

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River restoration challenges with a specific view on hydromorphology

Jianhua LI, Stephan HOERBINGER, Clemens WEISSTEINER, Lingmin PENG, Hans Peter RAUCH

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 5,   Pages 1033-1038 doi: 10.1007/s11709-020-0665-9

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Innovation Ecosystem for Green Smart City Building in China

Jin Chen

Frontiers of Engineering Management 2015, Volume 2, Issue 4,   Pages 325-330 doi: 10.15302/J-FEM-2015058

Abstract: Thus, setting up an innovation ecosystem is an astute way to promote the construction of a GSC.This paper, based on the case study by the Insigma Group, tries to explore the rules of innovation ecosystem

Keywords： green smart city     resource     innovation ecosystem building    

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Trajectory planning and base attitude restoration of dual-arm free-floating space robot by enhanced bidirectional

Zongwu XIE1 , Xiaoyu ZHAO1 , Zainan JIANG1 , Haitao YANG2 , Chongyang LI1

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 1, doi: 10.1007/s11465-021-0658-y

Abstract: When free-floating space robots perform space tasks, the satellite base attitude is disturbed by the dynamic coupling. The disturbance of the base orientation may affect the communication between the space robot and the control center on earth. In this paper, the enhanced bidirectional approach is proposed to plan the manipulator trajectory and eliminate the final base attitude variation. A novel acceleration level state equation for the nonholonomic problem is proposed, and a new intermediate variable-based Lyapunov function is derived and solved for smooth joint trajectory and restorable base trajectories. In the method, the state equation is first proposed for dual-arm robots with and without end constraints, and the system stability is analyzed to obtain the system input. The input modification further increases the system stability and simplifies the calculation complexity. Simulations are carried out in the end, and the proposed method is validated in minimizing final base attitude change and trajectory smoothness. Moreover, the minute internal force during the coordinated operation and the considerable computing efficiency increases the feasibility of the method during space tasks.

Keywords： free-floating space robot     dual arm     coordinated operation     base attitude restoration     bidirectional    

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Nitrogen pollution and source identification of urban ecosystem surface water in Beijing

Yufen REN, Zhiwei XU, Xinyu ZHANG, Xiaoke WANG, Xiaomin SUN, D. J. BALLANTINE, Shengzhong WANG

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 1,   Pages 106-116 doi: 10.1007/s11783-012-0474-z

Abstract: Nitrogen contamination of surface water is a worldwide environmental problem with intensive agriculture and high population densities. We assessed the spatial and seasonal variation in concentrations of total nitrogen and different nitrogen species present in surface-water in Beijing, China. Also, chemical ( ) and isotopic ( ) indicators were used to identify nitrate sources. The results showed that, during 2009 and 2010, nitrate nitrogen concentrations ranged from 0.7 to 7.6 mg·L , ammonium nitrogen from 0.1 to 3.4 mg·L , and total nitrogen from 2.4 to 17.0 mg·L . Inorganic nitrogen accounted for between 60 and 100% of total nitrogen at the ten monitoring sites. Nitrate nitrogen, ammonium nitrogen, and total nitrogen concentrations at the 2 downstream monitoring sites in south-eastern Beijing were significantly higher than those at the other eight upstream monitoring sites ( <0.01). Examination of seasonal variation showed that there was a significant inverse relationship between nitrate nitrogen concentrations and precipitation, and that nitrate nitrogen concentrations peaked in the dry seasons. The information given by the values and nitrate nitrogen concentrations, combined with the ratio distribution, showed that domestic sewage was the major source of nitrate in Beijing. Methods to control and reduce sewage pollution are urgently needed to help manage surface water quality in Beijing.

Keywords： nitrogen concentration     spatial and seasonal variation     stable nitrogen isotope     urban ecosystem     source    

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Restoration of hyper-eutrophic water with a modularized and air adjustable constructed submerged plant

Jinzhong LI, Xueju LI, Shujuan SUN, Xuegong LIU, Suiliang HUANG

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 4,   Pages 573-584 doi: 10.1007/s11783-011-0363-x

Abstract: A modularized and air adjustable constructed submerged plant bed (CSPB) which can be used to restore the eutrophic water is introduced in this paper. This plant bed helps hydrophyte grow under poor conditions such as frequently changed water depth, impaired water transparency, algae bloom and substantial duckweed in summer, which are not naturally suitable for growing hydrophyte. This pilot study in Waihuan River of Tianjin, China, revealed that reduction of Chemical Oxygen Demand (COD), Total Nitrogen (TN) and Total Phosphorus (TP) by the use of CSPB could be reached 30%–35%, 35%–40%, 30%–40% respectively in the growing season (from March to October) and 5%–10%, 5%–15%, 7%–20% respectively in the winter (from November to February) when the detention time was 6 d. The relationships between the concentration of COD, TN, TP and the detention time fit the first-order kinetic equation well and the coefficients of determination ( ) were all above 0.9. The attenuation coefficients k of the kinetic equation were a function of the water temperature. When the water temperature was quite low or quite high, was not significantly changed with increasing or decreasing water temperature. While when the temperature was in a moderate range, an increase or decrease of water temperature would lead to a rapid increase or decrease in .

Keywords： modularized and air adjustable constructed submerged plant bed     water purification     eco-restoration techniques    

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Urban constructed wetlands: Assessing ecosystem services and disservices for safe, resilient, and sustainable

Frontiers of Engineering Management   Pages 582-596 doi: 10.1007/s42524-023-0268-y

Abstract: study evaluates the potential of eight constructed wetlands near Beijing, China, focusing on their ecosystem

Keywords： constructed wetland     emergy     ecosystem services     disservices     ternary diagram    

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Study on the Path of “Near-zero Emission” Coal-based Clean Energy Ecosystem Development

Zhang Yu-zhuo

Frontiers of Engineering Management 2014, Volume 1, Issue 1,   Pages 37-41 doi: 10.15302/J-FEM-2014007

Abstract: Developing a "near-zero emission" coal-based clean energy ecosystem bears great significance for theimplementation pathways and key priorities of China's "near-zero emission" coal-based clean energy ecosystem

Keywords： near-zero emission     clean energy ecosystem     study on the path    

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Title Author Date Type Operation

Strategies for Water Security and Aquatic Ecosystem Restoration in the Yangtze River Economic Belt

Hu Chunhong, Zhang Shuanghu

Journal Article

A case for assessing

Ian T. RILEY

Journal Article

Ecosystem health assessment of urban rivers and lakes

ZHANG Fengling, LIU Jingling, YANG Zhifeng, LI Yongli

Journal Article

A CASE FOR ASSESSING ALLOCASUARINA AND CASUARINA SPP. FOR USE IN AGROECOSYSTEM IMPROVEMENT IN SEMI-ARID AREAS WITH A FOCUS ON CENTRAL ANATOLIA, TURKEY

Journal Article

Ecological Change Assessment and Protection Strategy in the Yellow River Basin

Mou Xuejie, Zhang Xiao, Wang Xiahui, Wang Jinnan, Rao Sheng, Huang Jin, Chai Huixia

Journal Article

CHALLENGES PROVIDING MULTIPLE ECOSYSTEM BENEFITS FOR SUSTAINABLE MANAGED SYSTEMS

Journal Article

The research of control and onservation technologies of Liaohe River conservation area

Duan Liang,Song Yonghui,Bai Lin,Xiang Liancheng,Zeng Ping,Peng Jianfeng,Tian Zhiyong

Journal Article

EMERGY analysis for sustainability evaluation of the Baiyangdian wetland ecosystem in China

Weiqing MENG, Cui HAO, Hongyuan LI, Meiting JU,

Journal Article

River restoration challenges with a specific view on hydromorphology

Jianhua LI, Stephan HOERBINGER, Clemens WEISSTEINER, Lingmin PENG, Hans Peter RAUCH

Journal Article

Innovation Ecosystem for Green Smart City Building in China

Jin Chen

Journal Article

Trajectory planning and base attitude restoration of dual-arm free-floating space robot by enhanced bidirectional

Zongwu XIE1 , Xiaoyu ZHAO1 , Zainan JIANG1 , Haitao YANG2 , Chongyang LI1

Journal Article

Nitrogen pollution and source identification of urban ecosystem surface water in Beijing

Yufen REN, Zhiwei XU, Xinyu ZHANG, Xiaoke WANG, Xiaomin SUN, D. J. BALLANTINE, Shengzhong WANG

Journal Article

Restoration of hyper-eutrophic water with a modularized and air adjustable constructed submerged plant

Jinzhong LI, Xueju LI, Shujuan SUN, Xuegong LIU, Suiliang HUANG

Journal Article

Urban constructed wetlands: Assessing ecosystem services and disservices for safe, resilient, and sustainable

Journal Article

Study on the Path of “Near-zero Emission” Coal-based Clean Energy Ecosystem Development

Zhang Yu-zhuo

Journal Article