(1) Key processes of carbon and nitrogen cycling in soil and influencing mechanisms
(2) Fluxes of dissolved organic matter in forest ecosystem and stabilization mechanisms
(3) Production and consumption processes of greenhouse gases in soil and driving mechanisms

1) Students are welcome to apply for a background in ecology or soil science or forestry or atmospheric chemistry and atmospheric environment.

2) Annual enrollment of 2-3 doctoral and postgraduate students will be provided.

Atmospheric physics and atmospheric environment

 (1) Terrestrial source/sink characteristics of greenhouse gases;
 (2) Key processes of carbon and nitrogen cycling in terrestrial ecosystems and driving mechanisms

1993.09-1998.07, Institute of Applied Ecology, Chinese Academy of Sciences, Ph, D.

1996.11-1997.05, Faculty of Agricultural and Applied Biological Sciences, University of Ghent, Belgium, visiting researcher

1989.09-1993.07, Anhui Agricultural University, China, B.S.

2014.7-present, Professor, University of Chinese Academy of Sciences
2020.1-2020.3, JSPS (Japan Society for the Promotion of Science) Invitational Fellowship, Faculty of Agriculture, Yamagata University, Japan
2012.8-2012.9, JSPS (Japan Society for the Promotion of Science) Bridge Fellowship, Faculty of Horticulture, Chiba University, Japan
2004.12-present, Professor, State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences
2002.11-2004.11, JSPS (Japan Society for the Promotion of Science) Postdoctoral Fellowship, Faculty of Horticulture, Chiba University, Japan
2000.7-2002.10, Associate professor, State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences
1998.7-2000.6, Postdoctoral researcher, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences
2000.1-2000.4, Visiting scientific researcher, Laboratory for Process Equipment, Technical University of Delft, The Netherlands

2013.01—present, International Agrophysics
2011.07—2014.6, ISRN Agronomy
2007.12—2016.12, African Journal of Environmental Science and Technology
2006.12—2016.12, African Journal of Agricultural Research
2014.1—present, Journal of Beijing Forestry University

1. General Project supported by the National Natural Sciences Foundation of China titled "Effect of winter snow on soil carbon dynamic and its stabilization under temperate forest stands and their driving mechanisms", principal, 2020-2023
2. General Project supported by the National Natural Sciences Foundation of China titled "Changes in carbon flux and carbon stabilization of temperate forest soils under freeze-thaw disturbances and driving mechanisms", principal, 2018-2021
3. General Project supported by the National Natural Sciences Foundation of China titled "Fluxes and stabilization of dissolved organic matter in temperate forests and their responses to environmental changes", principal, 2016-2019
4. Science Fund Project for Creative Research Groups supported by the National Natural Sciences Foundation of China titled "Carbon and nitrogen exchanges between terrestrial ecosystems and the atmosphere and their interactions with climate change", participator, 2014-2016
5. General Project supported by the National Natural Sciences Foundation of China titled "Responses of methane consumption and nitrous oxide emission from temperate forest soils to increased nitrogen deposition and change in throughfall", principal, 2013-2016
6. Joint Research Fund Project for Overseas Chinese Scholars supported by the National Natural Sciences Foundation of China titled "Effect of simulated frozen-thaw events on the leaching of carbon and nitrogen and the fluxes of greenhouse gases in cool temperate forest soils", Chinese principal, 2013-2014
7. General Project supported by the National Natural Sciences Foundation of China titled "Soil respiration in temperate forest stands and its responses to environmental changes", principal, 2012-2015
8. National Basic Research Program of China (973 Program) titled "China's terrestrial ecosystem carbon source characteristics and the global significance", participator, 2010-2014
9. Science Fund Project for Creative Research Groups supported by the National Natural Sciences Foundation of China titled "Carbon and nitrogen exchanges between terrestrial ecosystems and the atmosphere and their interactions with climate change", participator, 2011-2013
10. General Project supported by the National Natural Sciences Foundation of China titled "Flux and stabilization of dissolved organic carbon in a temperate mature forest and the responses to environmental changes", principal, 2009-2011
11. General Project supported by the National Natural Sciences Foundation of China titled "Methane and ethylene consumption in a temperate old-growth forest soil and influencing mechanisms", principal, 2008-2010
12. General Project supported by the National Natural Sciences Foundation of China titled "Production and consumption of ethylene in forest soils and the associated driving mechanisms", principal, 2005-2007
13. The Hundred Talents Project from the Chinese Academy of Sciences titled "Production and consumption of greenhouse gases in forest soils and driving mechanisms", principal, 2005-2008

1) The fourth session of science and technology innovation award from Institute of Atmospheric Physics, Chinese Academy of Sciences, 2009
2) The second award of national natural science issued by the China Ministry of Education titled "China agricultural greenhouse gas emissions and model research", 2008, the fifth rank
3) The sixth national outstanding young meteorological science and technology workers, 2006
4) The first China meteorological youth talents of science and technology award issued by the China Meteorological Administration, 2006
5) Awardee of the hundred talents project from the Chinese Academy of Sciences, 2005
6) Awardee of Wang Kuancheng postdoctoral work reward fund, Chinese Academy of Sciences, 1998
7) First prize of Mondial scholarship, Chinese Academy of Sciences, 1998
8) Liu Yongling bonus, Chinese Academy of Sciences, 1998

1. Xingkai Xu (2022) Effect of freeze-thaw disturbance on soil C and N dynamics and GHG fluxes of East Asia forests: review and future perspectives. Soil Science and Plant Nutrition, doi:10.1080/00380768.2021.2003164
2. Shuirong Tang, Ping Yuan, Keitaro Tawaraya, Takeshi Tokida, Minehiko Fukuoka, Mayumi Yoshimoto, Hidemitsu Sakai, Toshihiro Hasegawa, Xingka Xu, Weiguo Cheng (2022) Winter nocturnal warming affects the freeze-thaw frequency, soil aggregate distribution, and the contents and decomposability of C and N in paddy fields. Science of the Total Environment, 802, 149870, doi:10.1016/j.scitotenv.2021.149870
3. Shanshan Gong, Zhipei Feng, Anran Qu, Jinhua Sun, Xu Xingkai, Lai Yong and Yuhua Kong (2022) Effects of land-use types on the temporal dynamics of soil active carbon and nitrogen in the rocky mountainous of North China. Soil Science and Plant Nutrition, doi:10.1080/00380768.2021.1985383
4. Sun-Il Lee, Hyun-Jin Park, Young-Jae Jeong, Bo-Seong Seo, Jin-Hyeob Kwak, Hye In Yang, Xingkai Xu, Shuirong Tang, Weiguo Cheng, Sang-Sun Lim, Woo-Jung Choi (2021) Biochar-induced reduction of N₂O emission from East Asia soils under aerobic conditions: Review and data analysis. Environmental Pollution, 291, 118154, doi:10.1016/j.envpol.2021.118154
5. Xu Xingkai, Cuntao Duan, Haohao Wu, Xianbao Luo, Lin Han (2021) Effects of changes in throughfall on soil GHG fluxes under a mature temperate forest, northeastern China. Journal of Environmental Management, 294, 112950, doi:10.1016/j.jenvman.2021.112950
6. Shuirong Tang, Weiguo Cheng, Ronggui Hu, Julien Guigue, Satoshi Hattori, Keitaro Tawaraya, Takeshi Tokida, Minehiko Fukuoka, Mayumi Yoshimoto, Hidemitsu Sakai, Yasuhiro Usui, Xingkai Xu and Toshihiro Hasegawa (2021) Five-year soil warming changes soil C and N dynamics in a single rice paddy field in Japan. Science of the Total Environment, 756, 143845, doi:10.1016/j.scitotenv.2020.143845
7. Haohao Wu, Xingkai Xu, Pingqing Fu, Weiguo Cheng and Congsheng Fu (2021) Responses of soil WEOM quantity and quality to freeze-thaw and litter manipulation with contrasting soil water content: A laboratory experiment. Catena, 198, 105058, doi:10.1016/j.catena.2020.105058
8. Yuhua Kong, Nyuk Ling Ma, Xitian Yang, Yong Lai, Zhipei Feng, Xinliang Shao, Xingkai Xu, Dangquan Zhang (2020) Examining CO₂ and N₂O pollution and reduction from forestry application of pure and mixture forest. Environmental Pollution, 265, 114951, doi:10.1016/j.envpol.2020.114951
9. Samuel Munyaka Kimani, Putu Oki Bimantara, Satoshi Hattori, Keitaro Tawaraya, Shigeto Sudo, Xingkai Xu and Weiguo Cheng (2020) Co-application of poultry-litter biochar with Azolla has synergistic effects on CH₄ and N₂O emissions from rice paddy soils. Heliyon, 6, e05042, doi: 10.1016/j.heliyon.2020.e05042
10. Haohao Wu, Xu Xingkai, Weiguo Cheng and Han Lin (2020) Dissolved organic matter and inorganic N jointly regulate greenhouse gases fluxes from forest soils with different moistures during a freeze-thaw period. Soil Science and Plant Nutrition, 66(1): 163-176
11. Kong Yuhua, Zhu Longfei, Wu Haohao, Fu Pingqing and Xu Xingkai (2019) Effects of freeze-thaw and soil moisture on content and spectral structure properties of dissolved organic matter in forest soil leachates. Chinese Journal of Applied Ecology, 30(9): 1102-1112 (in Chinese)
12. Kong Yuhua, Han Mengjuan, Zhang Zhihua, Xu Xingkai, Lai Yong and Yang Xitian (2019) Seasonal dynamics of dissolved organic matter contents in surface soils of 3 artificial forests. Science of Soil and Water Conservation, 17(2): 44-52 (in Chinese)
13. Miao Min, Wu Haohao, Han Lin, Fu Pingqing and Xingkai Xu (2018) Concentrations and components of dissolved organic matter and its spectral characteristics in soil leachates from a temperate forest stand. Environmental Science & Technology, 41(12): 169-178 (in Chinese)
14. Wu Haohao, Xu Xingkai, Cheng Weiguo, Fu Pingqing and Li Fayun (2017) Antecedent soil moisture prior to freezing can affect quantity, composition and stability of soil dissolved organic matter during thaw. Scientific Reports, 7, 6380, doi:10.1038/s41598-017-06563-8
15. Wu Haohao, Xu Xingkai, Duan Cuntao, Li Tuansheng and Cheng Weiguo (2017) Effect of carbon and nitrogen addition on nitrous oxide and carbon dioxide fluxes from thawing forest soils. International Agrophysics, 31(3): 339-349
16. Wu Haohao, Xu Xingkai, Duan Cuntao, Li Tuansheng and Cheng Weiguo (2017) Changes in heterotrophic respiration and microbial biomass carbon of forest soils during thaw. Acta Ecologica Sinica, 37(8): 2729-2742 (in Chinese)
17. Zhang Dandan, Mo Liuying, Chen Xin, Zhang Limei and Xu Xingkai (2017) Effects of nitrogen addition on methanotrophs in temperate forest soil. Acta Ecologica Sinica, 37(24): 8254-8263 (in Chinese)
18. Shuirong Tang, Weiguo Cheng, Ronggui Hu, Miyuki Nakajima, Julien Guigue, Samuel Munyaka Kimani, Satoru Sato, Keitaro Tawaraya and Xingkai Xu (2017) Decomposition of soil organic carbon influenced by soil temperature and moisture in Andisol and Inceptisol paddy soils in a cold temperate region of Japan. Journal of Soils and Sediments, 17: 1843-1851
19. Ruan Changlin, Wu Haohao, Xu Xingkai and Li Tuansheng (2017) Comparison of dissolved organic matter in forest soils extracted by different extractants. Environmental Science & Technology, 40(11): 1-7 (in Chinese)
20. Wu Haohao, Xu Xingkai, Duan Cuntao, Li Tuansheng and Cheng Weiguo (2016) Synergistic effects of dissolved organic carbon and inorganic nitrogen on methane uptake in forest soils without and with freezing treatment. Scientific Reports, 6, 32555, doi:10.1038/srep32555
21. Wu Haohao, Xu Xingkai, Duan Cuntao, Li Tuansheng and Cheng Weiguo (2016) Effect of carbon and nitrogen addition on nitrous oxide flux during thawing of frozen temperate forest soils with different moisture levels. Chinese Journal of Ecology, 7: 1807-1818 (in Chinese)
22. Xu Xingkai, Yin Lian, Duan Cuntao and Jing Yunshu (2016) Effect of N addition, moisture, and temperature on soil microbial respiration and microbial biomass in forest soil at different stages of litter decomposition. Journal of Soils and Sediments, 16: 1421-1439
23. Shuirong Tang, Weiguo Cheng, Ronggui Hu, Julien Guigue, Samuel Munyaka Kimani, Keitaro Tawaraya and Xingkai Xu (2016) Simulating the effects of soil temperature and moisture in the off-rice season on rice straw decomposition and subsequent CH₄ production during the growth season in a paddy soil. Biology and Fertility of Soils, 52(5): 739-748
24. Xingkai Xu, Cuntao Duan, Haohao Wu, Tuansheng Li and Weiguo Cheng (2016) Effect of intensity and duration of freezing on soil microbial biomass, extractable C and N pools, and N₂O and CO₂emissions from forest soils in cold temperate region. Science China: Earth Sciences, 59(1): 156-169
25. Miyuki Nakajima, Weiguo Cheng, Shuirong Tang, Yasuaki Hori, Eiko Yaginuma, Satoshi Hattori, Susumu Hanayama, Keitaro Tawaraya and Xingkai Xu (2016) Modeling aerobic decomposition of rice straw during the off-rice season in an Andisol paddy soil in a cold temperate region of Japan: Effects of soil temperature and moisture. Soil Science and Plant Nutrition, 62(1): 90-98
26. Wu Haohao, Xu Xingkai,Duan Cuntao, Li Tuansheng and Cheng Weiguo (2015) Effect of vegetation type, wetting intensity, and nitrogen supply on external carbon stimulated heterotrophic respiration and microbial biomass carbon in forest soils. Science China: Earth Sciences, 58(8): 1446-1456
27. Yin Lian, Xu Xingkai and Jing Yuanshu (2015) Comparison of two measurement methods of dissolved organic carbon and dissolved total nitrogen. Environmental Science & Technology, 38(9): 93-97 (in Chinese)
28. Wu Haohao, Xu Xingkai, Li Tuansheng and Duan Cuntao (2014) Effect of carbon and nitrogen addition on nitrous oxide flux from temperate forest soils under different wetting intensity conditions. Chinese Science Bulletin, 59(14): 1337-1347 (in Chinese)
29. Wang Jinzhi, Hu Zhengyi, Xu Xingkai, Jiang Xia, Zheng Binghui, Liu Xiaoning, Pan Xubin and Kardol Paul (2014) Emissions of ammonia and greenhouse gases during combined pre-composting and vermicomposting of duck manure. Waste Management, 34: 1546-1552
30. Xu Xingkai, Luo Xianbao, Jiang Songhua and Xu Zhongjun (2012) Biodegradation of dissolved organic carbon in soil extracts and leachates from a temperate forest stand and its relationship to ultraviolet absorbance. Chinese Science Bulletin, 57(8): 912-920 
31. Xu Xingkai and Luo Xianbao (2012) Effect of wetting intensity on soil GHG fluxes and microbial biomass under a temperate forest floor during dry season. Geoderma, 170: 118-126
32. Xu Xingkai, Han Lin, Luo Xianbao and Han Shijie (2011) Synergistic effects of nitrogen amendments and ethylene on atmospheric methane uptake a temperate old-growth forest. Advances in Atmospheric Sciences, 28(4): 843-854
33. Xu Xingkai, Miao Hongyan and Chen Zhe (2011) The vertical distribution and their relationship of dissolved organic carbon and exchangeable metals in Chinese old-growth forest soils. African Journal of Agricultural Research, 6(4): 998-1008
34. Xu Xingkai and Inubushi Kazuyuki (2009) Ethylene oxidation, atmospheric methane consumption, and ammonium oxidation in temperate volcanic forest soils. Biology and Fertility of Soils, 45: 265-271
35. Zhang Tengyu, Xu Xingkai, Luo Xianbao, Han Lin, Wang Yinghong and Pan Genxing (2009) Effects of acetylene at low concentrations on nitrification, mineralization and microbial biomass nitrogen concentrations in forest soils. Chinese Science Bulletin, 54: 296-303
36. Xu Xingkai and Inubushi Kazuyuki (2009) Temperature effects on ethylene and methane production from temperate forest soils. Chinese Science Bulletin, 54: 1426-1433
37. Xu Xingkai and Inubushi Kazuyuki (2009) Soil acidification stimulates the emission of ethylene from temperate forest soils. Advance in Atmospheric Sciences, 26: 1253-1261
38. Xu Xingkai and Inubushi Kazuyuki (2009) Responses of ethylene and methane consumption to temperature and pH in temperate volcanic forest soils. European Journal of Soil Science, 60: 489-498
39. Xu Xingkai, Han Lin, Luo Xianbao, Liu Zirui and Han Shijie (2009) Effects of nitrogen addition on dissolved N₂O and CO₂, dissolved organic matter, and inorganic nitrogen in soil solution under a temperate old-growth forest. Geoderma, 151: 370-377
40. Xu Xingkai, Yuan Bin and Wei Jin (2008) Vertical distribution and interaction of ethylene and methane in temperate volcanic forest soils. Geoderma, 145: 231-237
41. Xu Xingkai, Zhang Tengyu and Liu Zirui (2008) Calibration model of microbial biomass carbon and nitrogen concentrations in soils using ultraviolet absorbance and soil organic matter. European Journal of Soil Science, 59: 630-639
42. Xu Xingkai and Inubushi Kazuyuki (2008) Measurement of ethylene and methane production in a temperate forest soil using inhibition of acetylene and carbon monoxide. Chinese Science Bulletin, 53(7): 1087-1093
43. Xu Xingkai and Inubushi Kazuyuki (2007) Production and consumption of ethylene in temperate volcanic surface forest soils. European Journal of Soil Science, 58: 668-679
44. Xu Xingkai and Wang Zijian (2007) Phosphorus uptake and translocation in field-grown maize after application of rare earth-containing fertilizer. Journal of Plant Nutrition, 30: 557-568
45. Xu Xingkai, Han Lin, Wang Yuesi and Inubushi Kazuyuki (2007) Influence of vegetation types and soil properties on microbial biomass carbon and metabolic quotients in temperate volcanic and tropical forest soils. Soil Science and Plant Nutrition, 53: 430-440
46. Xu Xingkai and Inubushi Kazuyuki (2007) Effects of N sources and glucose on the consumption of ethylene and methane by temperate volcanic forest surface soils. Chinese Science Bulletin, 52: 3281-3291
47. Xu Xingkai, Inubushi Kazuyuki and Sakamoto Kazunori (2006) Effect of vegetations and temperate on microbial biomass carbon and metabolic quotients of temperate volcanic forest soils. Geoderma, 136:310-319
48. Xu Xingkai and Inubushi Kazuyuki (2005) Contribution of mineralization of nitrogen to N₂O production in some acid forest soils under controlled aerobic conditions. Soil Science and Plant Nutrition, 51(5): 683-688
49. Boeckx Pascal, Xu Xingkai and Van Cleemput Oswald (2005) Mitigation of N₂O and CH₄ emission from rice-wheat cropping systems using dicyandiamide and hydroquinone. Nutrient Cycling in Agroecosystems, 72: 41-49
50. Xu Xingkai, Boeckx Pascal, Van Cleemput Oswald and Inubushi Kazuyuki (2005) Mineral nitrogen in a rhizosphere soil and in standing water during rice (Oryza sativa L.) growth: effect of hydroquinone and dicyandiamide. Agriculture, Ecosystems and Environment, 109: 107-117
51. Huang Yao, Zou Jianwen, Zheng Xunhua, Wang Yuesi and Xu Xingkai (2004) Nitrous oxide emissions as influenced by amendment of plant residues with different C:N ratios. Soil Biology and Biochemistry, 36(6): 973-981
52. Xu Xingkai and Inubushi Kazuyuki (2004) Effects of N sources and methane concentrations on methane uptake potential of a typical coniferous forest and its adjacent orchard soil.Biology and Fertility of Soils, 40: 215-221
53. Xu Xingkai, Wang Zijian, Wang Yuesi and Inubushi Kazuyuki (2003) Urea hydrolysis and inorganic-N in a luvisol after application of fertilizer containing rare-earth elements. Australian Journal of Soil Research, 41(4): 741-748
54. Xu Xingkai, Zhu Wangzhao, Wang Zijian and Witkamp Geert-Jan (2003) Accumulation of rare earth elements in maize plants (Zea mays L.) after application of mixtures of rare earth elements and lanthanum. Plant and Soil, 252(2): 267-277
55. Xu Xingkai, Boeckx Pascal, Van Cleemput Oswald and Zhou Likai (2002) Urease and nitrification inhibitors to reduce emissions of CH₄ and N₂O in rice production. Nutrient Cycling in Agroecosystems, 64(1-2): 203-211
56. Zheng Xunhua, Fu Congbin, Xu Xingkai, Yan Xiaodong, Huang Yao, Han Shenghui, Hu Fei and Chen Guanxiong (2002) The Asian nitrogen cycle case study. Ambio, 31(2): 79-87
57. Xu Xingkai, Boeckx Pascal, Wang Yuesi, Huang Yao, Zheng Xunhua, Hu Fei and Van Cleemput Oswald (2002) Nitrous oxide and methane emissions during rice growth and through rice plants: effect of dicyandiamide and hydroquinone. Biology and Fertility of Soils, 36(1): 53-58
58. Xu Xingkai, Boeckx Pascal, Zhou Likai and Van Cleemput Oswald (2002) Inhibition experiments on nitrous oxide emission from paddy soils. Global Biogeochemical Cycles, 16, 10.1029/2001GB001397
59. Xu Xingkai, Zhu Wangzhao, Wang Zijian and Witkamp Geert-Jan (2002) Distributions of rare earths and heavy metals in field-grown maize after application of rare earth-containing fertilizer. The Science of the Total Environment, 293: 97-105
60. Xu Xingkai and Wang Zijian (2001) Effects of lanthanum and mixtures of rare earths on ammonium oxidation and mineralization of nitrogen in soil. European Journal of Soil Science, 52(2): 323-330
61. Xu Xingkai, Huang Yao, Zhou Likai, Huang Guohong and Van Cleemput Oswald (2001) Effect of dicyandiamide and hydroquinone on the transformation of urea-nitrogen-15 in soil cropped to wheat. Biology and Fertility of Soils, 34(4): 286-290
62. Xu Xingkai, Zhou Likai, Van Cleemput Oswald and Wang Zijian (2000) Fate of urea-15N in a soil-wheat system as influenced by urease inhibitor hydroquinone and nitrification inhibitor dicyandiamide. Plant and Soil, 220: 261-270
63. Xu Xingkai, Wang Yuesi, Zheng Xunhua, Wang Mingxing, Wang Zijian, Zhou Likai and Van Cleemput Oswald (2000) Methane emission from a simulated rice field ecosystem as influenced by hydroquinone and dicyandiamide. Science of the Total Environment, 263(1-3): 243-253

《Soil Carbon and Nitrogen Processes and Greenhouse Gases》, Graduate course from University of Chinese Academy of Sciences

已指导学生

韩琳  博士研究生  070602-大气物理学与大气环境  

罗献宝  博士研究生  070602-大气物理学与大气环境  

吴浩浩  博士研究生  070602-大气物理学与大气环境