AMBI02012,41:370-379 379 Thesis.Beijing:Chinese Agriculture Academy of Sciences (in Linxiu Zhang is a research professor at Center for Chinese Agri- Chinese). cultural Policy.Institute of Geographical Sciences and Natural Xing.G.X.,and Z.L.Zhu.2002.Regional nitrogen budgets for China Resources Research.Her research is mainly concerned with the policy and its major watersheds.Biogeochemistry 57:405-427. for sustainable agricultural development. Yang,L.Z.,and B.Sun.2008.Cycling,balance and management of Address:Center for Chinese Agricultural Policy,Institute of Geo- nutrients in agroecosystems in China.Beijing:Science Press of graphical Sciences and Natural Resources Research,Chinese Acad- China (in Chinese). emy of Sciences,Beijing 100101,People's Republic of China. Yu,T.,W.Meng,O.Edwin,Z.Li,and J.Chen.2010.Long-term e-mail:lxzhang.ccap@igsnmr.ac.cn variations and causal factors in nitrogen and phosphorus transport in the Yellow River,China.Estuarine,Coastal and Linzhang Yang is a research professor at State Key Laboratory of Shelf Science 86:345-351. Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Yuan,X.Y.2000.Primary appraisal of pollution for lakes of China. Academy of Sciences.His research is mainly focused on agriculture Volcanology and Mineral Resources 21:128-136.(in Chinese). ecological management and water quality restoration. Zhang,F.S.1999.Some consideration to the improvement of nutrient Address:State Key Laboratory of Soil and Sustainable Agriculture, resources utilization efficiency.In:Soil science towards 21st Institute of Soil Science,Chinese Academy of Sciences,No.71 East century.Proceedings of 9th National Congress of Soil Science Beijing Road,Nanjing 210008,People's Republic of China. Society of China.Nanjing.China:Soil Science Society of China e-mail:Izyang@issas.ac.cn (in Chinese). Zhang L.X.,J.K.Huang,F.B.Qiao,and S.Rozelle.2006.Economic Fusuo Zhang is a professor at College of Resources and Environ- evaluation and analysis of fertilizer overuse by China's farmers. mental Sciences,China Agricultural University.His research is In:Policy for reducing Non-point pollution from crop production mainly concerned with plant nutrition and soil resource management in China,ed.Z.L.Zhu,D.Norse,and B.Sun,233-258.Beijing: Address:College of Resources and Environmental Sciences,China China Environmental Science Press. Agricultural University,Beijing 100094,People's Republic of China. Zhang,W.,Z.Tian,N.Zhang,and Z.Li.1996.Nitrate pollution of e-mail:zhangfs@cau.edu.cn groundwater in Northern China.Agriculture,Ecosystems Environment 59:223-231. David Norse is a professor at Department of Geography,University Zhang,Z.H.,and L.R.Li.2004.Groundwater resources of China. College London.His research interests include policy making for Beijing:SinoMaps Press. sustainable agriculture and environment protection. Zhu,Z.L.,and D.L.Chen.2002.Nitrogen fertilizer use in China- Address:Department of Geography,University College London,4 Contributions to food production,impacts on the environment Taviton Street,London WCIH OBT,UK. strategies.Nutrient Cycling Agroecosystems 63:117-127. e-mail:jarvisnors@aol.com Zhu,Z.L..Q.X.Wen,and J.R.Freney.1997.Nitrogen in soils of China.Dordrecht:Kluwer. Zhaoliang Zhu (is a research professor at State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese AUTHOR BIOGRAPHIES Academy of Sciences.His research is mainly focused on nitrogen cycling in agroecosystem and its management. Bo Sun is a research professor at State Key Laboratory of Soil and Address:State Key Laboratory of Soil and Sustainable Agriculture, Sustainable Agriculture,Institute of Soil Science,Chinese Academy Institute of Soil Science,Chinese Academy of Sciences,No.71 East of Sciences.His research interests include the management of nutrient Beijing Road,Nanjing 210008,People's Republic of China. cycling in agroecosystem and soil quality conservation. e-mail:zlzhu@issas.ac.cn Address:State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science,Chinese Academy of Sciences,No.71 East Beijing Road,Nanjing 210008,People's Republic of China. e-mail:bsun@issas.ac.cn Royal Swedish Academy of Sciences 2012 www.kva.se/en SpringerThesis. Beijing: Chinese Agriculture Academy of Sciences (in Chinese). Xing, G.X., and Z.L. Zhu. 2002. Regional nitrogen budgets for China and its major watersheds. Biogeochemistry 57: 405–427. Yang, L.Z., and B. Sun. 2008. Cycling, balance and management of nutrients in agroecosystems in China. Beijing: Science Press of China (in Chinese). Yu, T., W. Meng, O. Edwin, Z. Li, and J. Chen. 2010. Long-term variations and causal factors in nitrogen and phosphorus transport in the Yellow River, China. Estuarine, Coastal and Shelf Science 86: 345–351. Yuan, X.Y. 2000. Primary appraisal of pollution for lakes of China. Volcanology and Mineral Resources 21: 128–136. (in Chinese). Zhang, F.S. 1999. Some consideration to the improvement of nutrient resources utilization efficiency. In: Soil science towards 21st century. Proceedings of 9th National Congress of Soil Science Society of China. Nanjing, China: Soil Science Society of China (in Chinese). Zhang L.X., J.K. Huang, F.B. Qiao, and S. Rozelle. 2006. Economic evaluation and analysis of fertilizer overuse by China’s farmers. In: Policy for reducing Non-point pollution from crop production in China, ed. Z.L. Zhu, D. Norse, and B. Sun, 233–258. Beijing: China Environmental Science Press. Zhang, W., Z. Tian, N. Zhang, and Z. Li. 1996. Nitrate pollution of groundwater in Northern China. Agriculture, Ecosystems & Environment 59: 223–231. Zhang, Z.H., and L.R. Li. 2004. Groundwater resources of China. Beijing: SinoMaps Press. Zhu, Z.L., and D.L. Chen. 2002. Nitrogen fertilizer use in China— Contributions to food production, impacts on the environment strategies. Nutrient Cycling Agroecosystems 63: 117–127. Zhu, Z.L., Q.X. Wen, and J.R. Freney. 1997. Nitrogen in soils of China. Dordrecht: Kluwer. AUTHOR BIOGRAPHIES Bo Sun is a research professor at State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences. His research interests include the management of nutrient cycling in agroecosystem and soil quality conservation. Address: State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, No. 71 East Beijing Road, Nanjing 210008, People’s Republic of China. e-mail: bsun@issas.ac.cn Linxiu Zhang is a research professor at Center for Chinese Agri￾cultural Policy, Institute of Geographical Sciences and Natural Resources Research. Her research is mainly concerned with the policy for sustainable agricultural development. Address: Center for Chinese Agricultural Policy, Institute of Geo￾graphical Sciences and Natural Resources Research, Chinese Acad￾emy of Sciences, Beijing 100101, People’s Republic of China. e-mail: lxzhang.ccap@igsnrr.ac.cn Linzhang Yang is a research professor at State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences. His research is mainly focused on agriculture ecological management and water quality restoration. Address: State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, No. 71 East Beijing Road, Nanjing 210008, People’s Republic of China. e-mail: lzyang@issas.ac.cn Fusuo Zhang is a professor at College of Resources and Environ￾mental Sciences, China Agricultural University. His research is mainly concerned with plant nutrition and soil resource management. Address: College of Resources and Environmental Sciences, China Agricultural University, Beijing 100094, People’s Republic of China. e-mail: zhangfs@cau.edu.cn David Norse is a professor at Department of Geography, University College London. His research interests include policy making for sustainable agriculture and environment protection. Address: Department of Geography, University College London, 4 Taviton Street, London WC1H 0BT, UK. e-mail: jarvisnors@aol.com Zhaoliang Zhu (&) is a research professor at State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences. His research is mainly focused on nitrogen cycling in agroecosystem and its management. Address: State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, No. 71 East Beijing Road, Nanjing 210008, People’s Republic of China. e-mail: zlzhu@issas.ac.cn AMBIO 2012, 41:370–379 379 Royal Swedish Academy of Sciences 2012 www.kva.se/en 123