Diurnal and seasonal variations of soil respiration rate under different row-spacing in a Panicum virgatum L. field on semi-arid Loess Plateau of China
文献类型：期刊论文
| 作者 | Huang Jin1,2; Gao Zhijuan1; Chen Ji1; Zhang He1; Xu Bingcheng1,2 |
| 刊名 | JOURNAL OF ARID LAND
 |
| 出版日期 | 2016-06-01 |
| 卷号 | 8期号:3页码:341-349 |
| 关键词 | switchgrass row-spacing soil temperature soil water Q(10) value |
| ISSN号 | 1674-6767 |
| DOI | 10.1007/s40333-016-0081-0 |
| 通讯作者 | Xu Bingcheng(Bcxu@ms.iswc.ac.cn) |
| 英文摘要 | Soil respiration (SR) in crop field is affected by environmental factors, agronomic practices and crop types. To clarify how planting density affects the SR dynamics in switchgrass (Panicum virgatum L.) field on the semi-arid Loess Plateau, this research investigated diurnal and seasonal changes of soil respiration rate (R-S) under three different row-spacing treatments (20, 40 and 60 cm) in the fourth growing year of switchgrass. Results showed that R-S presented a pronounced seasonality under all row-spacing treatments. The highest daily average R-S values appeared in August, while the lowest (P < 0.05) were in September for each row-spacing. Diurnal variations of R-S exhibited single-peak curves in each month. Daily average R-S increased significantly as row-spacing enlarged during May and August but there was no significant difference among row-spacing treatments in September. Soil water storage in the depth of 0-100 cm had no significant difference (P > 0.05) among the row-spacing treatments, and similar results were found for soil temperature in 0-15 cm soil depth. Soil respiration temperature sensitivity (Q(10)) values were 1.0-3.7 during the growing months, which were strongly correlated with air temperature in May and June and the soil temperature at 15 cm depth in August. Higher aboveground biomass production and lower R-S in most growth months indicated that 20 cm row-spacing treatment was beneficial for increasing the carbon fixation in switchgrass field. Results also implied that it is necessary to take into account the influence of phenology and root growth of switchgrass on soil respiration for accurately evaluating the carbon cycle in the region. |
| WOS关键词 | NORTHWEST CHINA ; TEMPERATURE SENSITIVITY ; TEMPORAL VARIATION ; PINE PLANTATION ; USE EFFICIENCY ; CO2 EFFLUX ; TIME-LAG ; SWITCHGRASS ; REGION ; ECOSYSTEM |
| 资助项目 | Program for New Century Excellent Talents in University[NCET-11-0444] ; Fundamental Research Funds for the Central Universities[ZD2013020] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000373138300003 |
| 出版者 | SPRINGER HEIDELBERG |
| 资助机构 | Program for New Century Excellent Talents in University ; Fundamental Research Funds for the Central Universities |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/66899]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Xu Bingcheng |
| 作者单位 | 1.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Peoples R China 2.Chinese Acad Sci & Minist Water Resources, State Key Lab Soil Eros & Dryland Farming Loess P, Inst Soil & Water Conservat, Yangling 712100, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang Jin,Gao Zhijuan,Chen Ji,et al. Diurnal and seasonal variations of soil respiration rate under different row-spacing in a Panicum virgatum L. field on semi-arid Loess Plateau of China[J]. JOURNAL OF ARID LAND,2016,8(3):341-349. |
| APA | Huang Jin,Gao Zhijuan,Chen Ji,Zhang He,&Xu Bingcheng.(2016).Diurnal and seasonal variations of soil respiration rate under different row-spacing in a Panicum virgatum L. field on semi-arid Loess Plateau of China.JOURNAL OF ARID LAND,8(3),341-349. |
| MLA | Huang Jin,et al."Diurnal and seasonal variations of soil respiration rate under different row-spacing in a Panicum virgatum L. field on semi-arid Loess Plateau of China".JOURNAL OF ARID LAND 8.3(2016):341-349. |
入库方式： OAI收割
来源：地理科学与资源研究所
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