Dr. Li Yunkai, Professor

　　Professor Li Yunkai was born in Zhijiang Hunan Province of China on May, 1975. He received the M.S. and Ph.D. degree from China Agricultural University of College of Water Resources and Civil Engineering in 2000 and 2005. He was a visiting scholar in Michigan State University during March, 2013 to March, 2014. He is a doctoral tutor and was selected to the New Century Excellent Talents, Beijing Talents Funding Scheme and Beijing Municipal Science and Technology Star Plans. He is the deputy director of the  Engineering Center of Ministry of Education for Agricultural Water-Saving and Water Resources Ministry of Education Engineering Center for Agricultural Water-Saving and Water Resources.

　　He was in charge of 12 projects of National Natural Science Foundation of China involves youth fund projects and general projects. He made some progress in water resources and ecology, environment, microbial interdisciplinary research. He has three mainly research directions. They are: (1) Controlling Emitter Clogging and Designing New Products of Drip Irrigation, (2) Environmental Impact for Developing Intensive Irrigated Agriculture, (3) High-efficient and Safe Utilization of Unconventional Water.

　　He has published more than 60 papers as the first or corresponding author in Irrigation Science, Transaction of ASABE, and Journal of Hydraulic Engineering and other magazines at home and abroad, in which 23 of the papers have been received by SCI. He won the second prize of National Prize for Progress in Science and Technology and the first, second and third prize of the Beijing Municipal Science and Technology Awards. He has also been awarded of National Excellent Scientific and Technical Worker, Mao Yisheng Beijing Youth Awards, Chinese Society of Agricultural Engineering Youth Science Awards.

　　Recent Research Grants

2014	The Ministry of Water Resources Public Sector Research- Key Technology and Application of Drip Irrigation for Low Carbon Environmental Protection, (201401078), ￥3670,000, 2014-2016.
2012	Reclaimed Water Irrigation Capillary Periphyton Membrane Characteristics and Induced Water Plugging Mechanism and Control Mode, General Projects of National Natural Science Foundation of China, (51179190), ￥590,000, 2012-2015.
2011	Reclaimed Water Irrigation System Blocked Microbiology and Hydraulics Mechanism and its Control Mode, New Century Excellent Talents, (NETC-10-0780), ￥500,000, 2011-2013.
2011	The Effect of Quality of Reclaimed irrigation Water on Irrigation Device Blockage and its Control Mode, Beijing Talents Funding Scheme, (2010D009007000003), ￥40,000, 2011-2013.
2010	Reclaimed Water Reuse Under the Condition of Ecological Water Vadose Net Fouling Mechanism and Permeability Reducing Control Target, Ministry of Water Resources Public Welfare Industry Special Fund Project, (201001067), ￥1,050,000, 2010-2012.
2009	Reclaimed Water as the Feasibility of the Yongding River Ecological Water Use and Environmental Impact Study, Beijing Municipal Science and Technology Plan Projects, (D090409004009004), ￥2,298,000, 2009-2011.
2007	Drop Head Maze Solid-Liquid Two-phase Turbulent Flow Characteristics in The Runner and The Anti-clogging Design Theory Research, National Natural Science Foundation of China, (50609029), ￥260,000, 2007-2009.
2006	Aquaculture Wastewater Using Farmland Soil - crop Systems Under The Condition of Nitrogen Migration Rule , National Science and Technology Support Plan, (2006BAD17B02), ￥150,000, 2006-2010.
2008	The Influence of The Haihe River Basin Irrigation Farming Development on Water Cycle and Distributed Simulation, China Postdoctoral Science Foundation, (20080430072),￥50,000, 2008.1-2009.12.

　　Recent Publications in Reviewed Journals

　　Li Yunkai，Feng Ji, Progress in measurement of hydrodynamic characteristics in drip irrigation emitters. Journal of Drainage and Irrigation Machinery Engineering, 2014, DOI: 10.3969 / jissn.1674 – 8530.13.0212（EI）

　　Yiting Pei，Yunkai Li*，Yaoze Liu，Bo Zhou，Ze Shi，Yinguang Jiang．Eight emitters clogging characteristics and its suitability evaluation under on-site reclaimed water drip irrigation. Irrigation Science，2013，DOI：10.1007/s00271-013-0420-2（Key Journal，SCI/EI）

　　Tianzhi Wang，Yunkai Li*，Mingchao Liang，Peiling Yang，Zhihui Bai．Biofilms on the surface of gravels and aquatic plants in rivers and lakes with reusing reclaimed water．Environmental Earth Science．2013，DOI 10.1007/s12665-013-2998-3（SCI/EI）

　　Lixi Zhao，Pengbo Shui，Fang Jiang，Hengqing Qiu，Shumei Ren，Yunkai Li*，Zhang Yu．Using monitoring data of surface soil to predict whole crop-root zone soil water content with PSO-LSSVM, GRNN and WNN. Earth Science Informatics．2013，DOI：10.1007/s12145-013-0130-6（SCI/EI）

　　Bo Zhou，Yunkai Li*，Yaoze Liu，Yiting Pei，Yinguang Jiang，Honglu Liu．Effects of flow path depth on emitter clogging and surface topographical characteristics of biofilms．Irrigation and Drainage．2013，DOI：10.1002/ird.1792（SCI/EI）

　　Bo Zhou，Yunkai Li*，Yiting Pei，Yaoze Liu，Zhijing Zhang，Yinguang Jiang．Quantitative relationship between biofilms components and emitter clogging under reclaimed water drip irrigation．Irrigation Science．2013，31（6）：1251-1263（Key Journal，SCI/EI）

　　Yunkai Li*，Bo Zhou，Yaoze Liu，Yinguang Jiang，Yiting Pei，Ze Shi．Preliminary surface topographical characteristics of biofilms attached on drip irrigation emitters using reclaimed water．Irrigation Science，2013，31（4）：557-574（Key Journal，SCI/EI）

　　Mingchao Liang, Tianzhi Wang, Yunkai Li*, Peiling Yang, Chengcheng Liu, Pengxiang Li, Weizhi Hao．Structural and fractal characteristics of biofilm attached on the surfaces of aquatic plants and gravels in the rivers and lakes reusing reclaimed wastewater．Environmental Earth Sciences．2013，70（5）：2319-2333（SCI/EI）

　　Wei Zhao，Yunkai Li*，Chunfa Zhou，Hui Wang，Qun Zhao，Keqiang Zhang，Feng Wang ，Zhiping Huang，Zhiyun Ouyang． Adsorption and desorption characteristics of ammonium in eight loams irrigated with reclaimed wastewater from intensive hogpen．Environmental Earth Science．2013，69（1）：41-49（SCI/EI）

　　Yunkai Li*，Liu Haisheng，Yang Peiling，Wu Dan．Analysis on tracing ability of different size particles in drip irrigation emitters with computational fluid dynamics．Irrigation and Drainage．2013，62（3）：340-351（SCI）

　　Dan Wu，Yunkai Li*，Haisheng Liu，Peiling Yang，Haosu Sun，Yaoze Liu．Simulating on the flow characteristics in the drip irrigation emitter with Large Eddy Methods．Mathematical and Computer Modelling．2013，62（3）：340-351（SCI/EI）

　　Li Yunkai, Song Peng, Zhou Bo. Microbiology mechanism and controlling methods for emitter clogging in the reclaimed water drip irrigation system. Transactions of the Chinese Society of Agricultural Engineering, 2013, 29（15）:98-107（EI）

　　Yunkai Li*，Yaoze Liu，Guibing Li，Tingwu Xu，Haisheng Liu，Shumei Ren，Dazhuang Yan，Peiling Yang．Surface topographic characteristics of suspended particulates in reclaimed wastewater and effects on clogging in labyrinth drip irrigation emitters．Irrigation Science．2012，30（1）：43-56（Key Journal，SCI/EI）

　　Guibing Li，Yunkai Li*，Tingwu Xu，Yaoze Liu，Hai Jin，Peiling Yang，Dazhuang Yan，Shumei Ren．Effects of average velocity on the growth and surface topography of biofilms attached on the reclaimed wastewater drip irrigation system laterals．Irrigation Science．2012，30（2）：103-113（Key Journal，SCI/EI）

　　Bo Zhou，Renkuan Liao，Yunkai Li*，Tao Gu，Peiling Yang，Ji Feng，Weimin Xing，Zhichao Zou．Water-absorption characteristics of organic-inorganic composite superabsorbent polymers and its effect on Summer Maize root growth．Journal of Applied Polymer Science，2012，126（2）：423-435（SCI/EI）

　　Yunkai Li*，Peiling Yang，Honglu Liu，Tingwu Xu，Haisheng Liu．Pressure losses mechanism analyzed with pipe turbulence theory and friction coefficient prediction in labyrinth path of drip irrigation emitter．Irrigation and Drainage．2011，60（2）：179-186（SCI/EI）

　　Haisheng Liu，Yunkai Li*，Yanzheng Liu，Peiling Yang，Shumei Ren，Runjie Wei，Hongbing Xu．Flow characteristics in energy dissipation units of labyrinth path in the drip irrigation emitters with DPIV technology．Journal of Hydrodynamics，ser. B．2010，22（1）：137-145（SCI/EI）

　　Yunkai Li*，Yingjie Tian，Zhiyun Ouyang，Linyan Wang，Tingwu Xu，Peiling Y ang，Huanxun Zhao．Analysis of soil erosion characteristics in small watersheds with particle swarm optimization，support vector machine，and artificial neuronal networks．Environmental Earth Science．2010，60（7）：1559-1568（SCI/EI）

　　Yunkai Li*，Peiling Yang，Tingwu Xu，Honglu Liu，Haisheng Liu，Feipeng Xu．Hydraulic property and flow characteristics of three labyrinth flow paths of drip irrigation emitter under micro-pressure．Transaction of ASABE．2009，52（4）：1129-1138（Key Journal，SCI/EI）

　　Yunkai Li*，Tingwu Xu，Zhiyun Ouyang，Xiongcai Lin，Honglu Liu, Zhongyong Hao, Peiling Yang．Micromorphology of macromolecular superabsorbent polymer and its fractal characteristics．Journal of Applied Polymer Science．2009，113：3510-3519（SCI/EI）

　　Yunkai Li*，Peiling Yang，Tingwu Xu，Shumei Ren，Xiongcai Lin，Feipeng Xu．CFD and digital particle tracking to assess flow characteristics in the labyrinth flow path of a drip irrigation emitter．Irrigation Science．2008，26：427-438（Key Journal，SCI/EI）