Open AccessImpact of diurnal unsymmetrical warming on soil respiration in an agroecological system of the Lhasa region
Author(s) -
Zhiming Zhang,
Guangyu Zhang,
Haorui Zhang
Publication year - 2019
Publication title -
plos one
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.99
H-Index - 332
ISSN - 1932-6203
DOI - 10.1371/journal.pone.0217575
Subject(s) - agroecology , environmental science , soil respiration , respiration , global warming , climate change , soil water , soil science , biology , ecology , agriculture , botany
Purpose The impact of diurnal unsymmetrical rise in temperature on soil respiration ( R s ) is not fully understood; thus, we explored such a warming influence on R s in an agroecological system of the Lhasa. Materials and methods A field warming experiment (C: control; DW: daytime warming; NW: nighttime warming; DW+NW: daytime plus nighttime warming) was carried out in a naked barley ecological system. Results and discussion The DW, NW and DW+NW treatments dramatically increased soil temperature and decreased soil moisture but did not markedly modify R s . The effects of DW and NW on soil respiration sensitivity ( Q 10 ) during the daytime and nighttime were different; they had no effects on daytime Q 10 of R s , but a significant inhibitory effect on nighttime Q 10 of R s . Conclusions A diurnal unsymmetrical rise in temperature brought about different results for the Q 10 of R s but did not cause changes in R s under different experimental treatments in agroecological systems of the Lhasa.