Change of Soil CH sub(4) Fluxes of Robinia pseudoacacia Stand During Non-growing Season and the Impact Factors

• Published in: Forest research (Beijing) Vol. 29; no. 2
• Main Authors: Zhuang, Jing-jing, Zhang, Jin-song, Meng, Ping, Zheng, Ning, Li, Jian-xia
• Format: Journal Article
• Language: Chinese
• Published: 01.01.2016
• Subjects: Robinia pseudoacacia
• ISSN: 1001-1498

The objective of this paper is to investigate the diurnal and seasonal variation of CH4 fluxes in different weather conditions, and explore the effects of soil and meteorological factor on CH4 fluxes in black locust forest soil. The automatic observation system with the near infrared laser and infrared laser analysis composite technology was used to measure the CH4 fluxes of soil in Robinia pseudoacacia L. plantation in low hilly land of north China from October 2014 to April 2015. Meanwhile, the atmospheric temperature and relative humidity,soil temperature andsoil water content, global radiation and precipitation were concurrently measured. The principal component analysis and stepwise regression analysis were used to analyze the relationship among the factors and determine the main factor of soil CH4 flux. The R. pseudoacacia forest soil was the sinks of atmospheric CH4 during non-growing season. In the latter period, the soil CH4 fluxes were influenced by air temperature and soil temperature.