IGSNRR OpenIR
Biophysical controls of soil respiration in a wheat-maize rotation system in the North China Plain
Tong, Xiaojuan1; Li, Jun2; Nolan, Rachael H.3; Yu, Qiang3,4,5
2017-11-15
Source PublicationAGRICULTURAL AND FOREST METEOROLOGY
ISSN0168-1923
Volume246Pages:231-240
Corresponding AuthorTong, Xiaojuan(tongxj@bjfu.edu.cn) ; Li, Jun(lijun@igsnrr.ac.cn)
AbstractCroplands play a vital role in regional carbon budgets. We hypothesized that biophysical factors would be important for soil respiration in a wheat-maize rotation cropping system. Soil CO2 efflux was measured using the closed chamber method, and net CO2 exchange between the cropland and the atmosphere obtained by the eddy covariance technique in a winter wheat-summer maize double cropping system over four years (Oct 2002-Oct 2006). In addition to soil temperature, soil respiration was controlled by leaf area index and soil moisture in the wheat field and soil moisture in the maize field. Temperature sensitivity (Q(10)) of soil respiration was 2.2 in the wheat and maize growing seasons. In the wheat field, the Q(10) value during the sowing-returning green period (4.9) was more than that during the returning green-ripening period (2.0). On a monthly time scale, soil respiration was controlled by gross primary productivity in the wheat field, indicating that soil respiration was coupled with ecosystem photosynthesis. Annual soil respiration was 825 +/- 73g C m(-2) in the wheat-maize rotation system in 2003-2006. Over a 4-year average, soil respiration was 355 +/- 50 g C m(-2) in the wheat growing season and 470 +/- 67 g C m(-2) in the maize growing season, which accounted for 43% and 57% of the annual value respectively. At an annual time scale, soil respiration contributed to 72% of ecosystem respiration in the winter wheat-summer maize double cropping system.
KeywordSoil respiration Ecosystem respiration Gross primary productivity Temperature sensitivity Leaf area index
DOI10.1016/j.agrformet.2017.07.005
WOS KeywordCARBON-DIOXIDE FLUX ; CO2 EFFLUX ; ECOSYSTEM RESPIRATION ; WINTER-WHEAT ; TEMPERATURE SENSITIVITY ; FOREST SOIL ; HETEROTROPHIC RESPIRATION ; SEASONAL-VARIATIONS ; MICROBIAL BIOMASS ; ORGANIC-CARBON
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[31570617] ; National Natural Science Foundation of China[31100322] ; Fundamental Research Funds for Central Universities[YX2011-19]
Funding OrganizationNational Natural Science Foundation of China ; Fundamental Research Funds for Central Universities
WOS Research AreaAgriculture ; Forestry ; Meteorology & Atmospheric Sciences
WOS SubjectAgronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS IDWOS:000408782000021
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/61733
Collection中国科学院地理科学与资源研究所
Corresponding AuthorTong, Xiaojuan; Li, Jun
Affiliation1.Beijing Forestry Univ, Coll Forestry, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China
3.Univ Technol Sydney, Sch Life Sci, POB 123, Broadway, NSW 2007, Australia
4.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Fanning Loess P, Yangling 712100, Shaanxi, Peoples R China
5.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Tong, Xiaojuan,Li, Jun,Nolan, Rachael H.,et al. Biophysical controls of soil respiration in a wheat-maize rotation system in the North China Plain[J]. AGRICULTURAL AND FOREST METEOROLOGY,2017,246:231-240.
APA Tong, Xiaojuan,Li, Jun,Nolan, Rachael H.,&Yu, Qiang.(2017).Biophysical controls of soil respiration in a wheat-maize rotation system in the North China Plain.AGRICULTURAL AND FOREST METEOROLOGY,246,231-240.
MLA Tong, Xiaojuan,et al."Biophysical controls of soil respiration in a wheat-maize rotation system in the North China Plain".AGRICULTURAL AND FOREST METEOROLOGY 246(2017):231-240.
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