Experimental Warming Effects on Soil Respiration, Nitrification, and Denitrification in a Winter Wheat-Soybean Rotation Cropland. Issue 2 (19th January 2017)

• Record Type: Journal Article
• Authors: Chen, Shutao; Liu, Yan; Zhai, Xiaoyan; Hu, Zhenghua
• Is Part Of: Communications in soil science and plant analysis. Volume 48:Issue 2(2017)
• Page Start: 148
• Page End: 161
• Publication Date: 2017-01-19
• Subjects: Denitrification -- experimental warming -- nitrification -- soil respiration; Soil science -- Periodicals; Plants -- Chemical analysis -- Periodicals; Agricultural chemistry -- Periodicals; 631.405
• DOI: 10.1080/00103624.2016.1253711
• Languages: English
• ISSNs: 0010-3624

Abstract

ABSTRACT: A field experiment was conducted to examine responses of soil respiration, nitrification, and denitrification to warming in a winter wheat ( Triticum aestivum L.)–soybean ( Glycine max (L.) Merr) rotation cropland. The results showed that seasonal variations in soil respiration were positively related to seasonal fluctuations in soil temperature. Seasonal mean soil respiration rates for the experimental warming (EW) and control (CK) plots were 3.98 ± 0.43 and 2.54 ± 0.45 μmol m −2 s −1, respectively, in the winter wheat growing season, and they were 4.59 ± 0.16 and 4.36 ± 0.08 μmol m −2 s −1, respectively, in the soybean growing season. There was a marginally significant level ( p = 0.097) for mean nitrification rates between EW and CK plots. Soil temperature and moisture accounted for 58.2% and 58.1% of the seasonal variations observed in the winter wheat and soybean plots, respectively.