Every reference with a DOI in the deposited reference list resolved to a known
work in Crossref or DataCite at the dated check, and none carried a retraction,
withdrawal, or removal notice.
The 37 references without a DOI — listed, not checked
no DOI — not checkedCao, N., Qu, D., Chen, X. P., Zhang, F. S., and Fan, M. S.: Analysis of the contribution to non-point pollution made by balanced fertilizer in Northeast China, J. Northwest Sci. Tech. Univ. Agri. For. (Nat. Sci. Ed), 34, 127–133, 2006.
no DOI — not checkedCai, G. X., Chen, D. L., Ding, H., Pacholski, A., Fan, X. H., and Zhu, Z. L.: Nitrogen losses from fertilizers applied to maize, wheat and rice in the North China Plain, Nutr. Cycl. Agroecosyst., 63, 187–195, 2003.
no DOI — not checkedChen, G. X., Huang, G. H., Huang, B., Wu, K. W., Wu, J., and Xu, H.: Nitrous oxide and methane emissions from soil–plant systems, Nutr. Cycl. Agroecosyst., 49, 41–45, 1997.
no DOI — not checkedChina National Coordination Committee on Climate Change: Initial climate change information notification of the People's Republic of China, China Planning Press, Beijing, China, 13–22, 2004 (in Chinese).
no DOI — not checkedDobermann, A.: Nutrient use efficiency-measurement and management, in: Proc. of International Fertilizer Industry Association (IFA) Workshop on Fertilizer Best Management Practices, Brussels, Belgium, 22 pp., 2007.
no DOI — not checkedEIA – Energy Information Administration: Emissions of greenhouse gas in the United States, DOE/EIA-0573(97), Washington, DC, 1998, 1997.
no DOI — not checkedFood and Agricultural Organization (FAO): World Agricultural Towards 2015/2030, An FAO Perspective, FAO, Rome, 2003.
no DOI — not checkedGao, Z. L.: N2O flux and CH4 uptake of soil in winter wheat and summer maize rotation system, Ph.D. thesis, China Agriculture University, Beijing, China, 2004 (in Chinese).
no DOI — not checkedHeffer, P. and Prud, H. M.: World agriculture and fertilizer demand, global fertilizer supply and trade 2008–2009 summary report, International Fertilizer Industry Association (IFA), 34th IFA Enlarged Council Meeting, Ho Chi Minh City, Vietnam, 2008.
no DOI — not checkedIPCC: Intergovernmental Panel on Climate Change Guidelines for National Greenhouse Gas Inventories, Paris, OECD, 1996.
no DOI — not checkedIPCC: Guidelines for National Greenhouse Gas Inventories: Greenhouse Gas Inventory Reference Manual, Revised 1996, IPCC/OECD/IGES, Bracknell, UK, 1997.
no DOI — not checkedIPCC: Guidelines for national greenhouse gas inventories, IGES, Hayama, Japan, 2006.
no DOI — not checkedIPCC: Historical overview of climate change science. Climate Change 2007: The Physical Science Basis, Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, edited by: Solomon, S., Qin, D., Manning, M., Chen, Z., Marquis, M., Averyt, K. B., Tignor, M., and Miller, H. L., Cambridge University Press, Cambridge, UK and New York, NY, USA, 130–234, 2007a.
no DOI — not checkedIPCC: Changes in atmospheric constituents and in radiative forcing. Climate Change 2007: The Physical Science Basis, Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, edited by: Solomon, S., Qin, D., Manning, M., Chen, Z., Marquis, M., Averyt, K. B., Tignor, M., and Miller, H. L., Cambridge University Press, Cambridge, UK and New York, NY, USA, 130–234, 2007b.
no DOI — not checkedIPCC: Agriculture. Climate Change 2007: Mitigation, Contribution of Working Group III to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, edited by: Metz, B., Davidson, O. R., and Bosch, P. R., Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA, 498–540, 2007c.
no DOI — not checkedLi, C. S., Xiao, X. M., Frolking, S., Moore III, B., Salas, W., Qiu, J. J., Zhang, Y., Zhuang, Y. H., Wang, X. K., Dai, Z. H., Liu, J. Y., Qin, X. G., Liao, B. H., and Sass, R.: Greenhouse gases emission from cropland in China, Quatern. Sci., 23, 493–503, 2003 (in Chinese).
no DOI — not checkedLi, J. L., Zhu, J. H., Zhang, X. S., Meng, X. X., Chen, Q., Li, X. L., and Zhang, F. S.: Nitrate leaching loss from soil and nutrient utilization by tomato in protected field, Chin. J. Appl. Biol. 7, 126–129, 2001 (in Chinese with English abstract).
no DOI — not checkedLi, Q. K., Zhu, Z. L., and Yu, T. R.: Fertilizer Problems in Agriculture Development of China, Jiangxi Science and Technology Press, Nanchang, China, 12–27, 1998 (in Chinese).
no DOI — not checkedLi, T. L.: Current situation and prospects of greenhouse production industry development in China, J. Shenyang Agric. Univer., 36, 131–138, 2005 (in Chinese).
no DOI — not checkedLiu, X. L., Xu, J. X., Wang, F. H., Zhang, F. S., and Ma, W. Q.: Estimation parameters of nitrogen balance in stock farming system of China, Chin. J. Appl. Ecol., 17, 417–423, 2006 (in Chinese with English abstract).
no DOI — not checkedLu, R. K., Liu, H. X., Wen, D. Z., Qin, S. W., Zheng, J. Y., and Wang, Z. Q.: Study on nutrient cycling and balance in Chinese typical agro-ecosystem, II. The farmland nutrient receive parameters, Chin. J. Soil. Sci., 27, 151–154, 1996a (in Chinese with English abstract).
no DOI — not checkedLu, R. K., Liu, H. X., Wen, D. Z., Qin, S. W., Zheng, J. Y., and Wang, Z. Q.: Study on nutrient cycling and balance in Chinese typical agro-ecosystem. III, The status of nutrient cycling and balance in whole country and typical region, Chin. J. Soil. Sci., 27, 193–196, 1996b (in Chinese with English abstract).
no DOI — not checkedMa, L., Wang, F. H., Ma, W. Q., Zhang, F. S., and Fang, M. S.: Assessments of the production of animal manure and its contribution to eutrophication in Northeast China for middle and long period, T. CSAE., 22, 170–174, 2006 (in Chinese with English abstract).
no DOI — not checkedMinistry of Agriculture of the People's Republic of China: China agriculture statistical Report, China Agricultural Press, Beijing, China, 1980–2007a (in Chinese).
no DOI — not checkedMinistry of Agriculture of the People's Republic of China: Livestock Yearbook of China, China Agricultural Press, Beijing, China, 1980–2007b (in Chinese).
no DOI — not checkedNational Extension Center of Agriculture Technique: Chinese Organic Fertilizer Nutrient Records, China Agricultural Press, Beijing, China, 1–200, 1999a (in Chinese).
no DOI — not checkedNational Extension Center of Agriculture Technique: Chinese Organic Fertilizer Resource, China Agricultural Press, Beijing, China, 1–280, 1999b (in Chinese).
no DOI — not checkedSong, W. Z., Wang, S. B., Zeng, J. H., Wang, Z. P., and Zhang, Y. M.: Emission of nitrous oxide from dryland in Northern China, Adv. Environ. Sci., 5, 49–55, 1997 (in Chinese with English abstract).
no DOI — not checkedSu, W. H., Song, W. Z., Zhang, H., Cao, M. Q., Li, H. R., and Zhou, Q.: Flux of nitrous oxide on typical winter wheat field in Northern China, Environ. Chensit., 11, 26–32, 1992.
no DOI — not checkedTang, S. L.: Data distribution inspection and the application in the agrology V. Normalization of partial samples and its computer programs, Soil, 16, 233–236, 1984 (in Chinese).
no DOI — not checkedWang, F. H., Ma, W. Q., Dou, Z. X., Ma, L., Liu, X. J., Xu, J. X., and Zhang, F. S.: The estimation of the production amount of animal manure and its environmental effect in China, Chin. Environ. Sci., 25, 614–617, 2006 (in Chinese with English abstract).
no DOI — not checkedWang, J. Q.: Analysis and evaluation of yield increase of fertilization and nutrient utilization efficiency for major cereal crops in China, Ph.D. thesis, China Agriculture University, Beijing, China, 2007 (in Chinese).
no DOI — not checkedXing, G. X.: N2O emission from cropland in China, Nutr. Cycl. Agroecosyst., 52, 249–254, 1998.
no DOI — not checkedXing, G. X. and Zhu, Z. L.: An assessment of N loss from agricultural fields to the environment in China, Nutr. Cycl. Agroecosyst., 57, 67–73, 2000.
no DOI — not checkedXiong, Z. Q., Xing, G. X., Tsuruta, H., Shi, S. L., and Du, L. J.: Measurement of nitrous oxide emissions from two rice-based cropping systems in China, Nutr. Cycl. Agroecosyst., 64, 125–133, 2002.
no DOI — not checkedXue, Z. S.: Principle of medical statistics, People's Medical Press, Beijing, China, 150–152, 1978 (in Chinese).
no DOI — not checkedZhang, X. J., Wang, J. X., and Zhang, J. X.: Study the method for normalization of partial soil environment background value, Environ. Monit. CHN., 6, 32–34, 1990 (in Chinese).
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