Diel hysteresis between soil respiration and soil temperature in a biological soil crust covered desert ecosystem
文献类型：期刊论文
| 作者 | Guan, Chao1,2; Li, Xinrong1; Zhang, Peng1; Chen, Yongle1,2 |
| 刊名 | PLOS ONE
 |
| 出版日期 | 2018-04-06 |
| 卷号 | 13期号:4页码:13 |
| ISSN号 | 1932-6203 |
| DOI | 10.1371/journal.pone.0195606 |
| 通讯作者 | Guan, Chao(guanchao880421@163.com) |
| 英文摘要 | Soil respiration induced by biological soil crusts (BSCs) is an important process in the carbon (C) cycle in arid and semi-arid ecosystems, where vascular plants are restricted by the harsh environment, particularly the limited soil moisture. However, the interaction between temperature and soil respiration remains uncertain because of the number of factors that control soil respiration, including temperature and soil moisture, especially in BSC-dominated areas. In this study, the soil respiration in moss-dominated crusts and lichen-dominated crusts was continuously measured using an automated soil respiration system over a one-year period from November 2015 to October 2016 in the Shapotou region of the Tengger Desert, northern China. The results indicated that over daily cycles, the half-hourly soil respiration rates in both types of BSC-covered areas were commonly related to the soil temperature. The observed diel hysteresis between the half-hourly soil respiration rates and soil temperature in the BSC-covered areas was limited by nonlinearity loops with semielliptical shapes, and soil temperature often peaked later than the half-hourly soil respiration rates in the BSC-covered areas. The average lag times between the half-hourly soil respiration rates and soil temperature for both types of BSC-covered areas were two hours over the diel cycles, and they were negatively and linearly related to the volumetric soil water content. Our results highlight the diel hysteresis phenomenon that occurs between soil respiration rates and soil temperatures in BSC-covered areas and the negative response of this phenomenon to soil moisture, which may influence total C budget evaluations. Therefore, the interactive effects of soil temperature and moisture on soil respiration in BSC-covered areas should be considered in global carbon cycle models of desert ecosystems. |
| 收录类别 | SCI |
| WOS关键词 | CARBON-DIOXIDE FLUX ; TENGGER-DESERT ; SEASONAL-VARIATION ; NORTHERN CHINA ; CO2 EFFLUX ; VEGETATION ; FOREST ; PHOTOSYNTHESIS ; DEPENDENCE ; PULSES |
| WOS研究方向 | Science & Technology - Other Topics |
| WOS类目 | Multidisciplinary Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000429379600040 |
| 出版者 | PUBLIC LIBRARY SCIENCE |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2558161 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Guan, Chao |
| 作者单位 | 1.Chinese Acad Sci, Shapotou Desert Res & Expt Stn, NW Inst Ecoenvironm & Resources, Lanzhou, Gansu, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guan, Chao,Li, Xinrong,Zhang, Peng,et al. Diel hysteresis between soil respiration and soil temperature in a biological soil crust covered desert ecosystem[J]. PLOS ONE,2018,13(4):13. |
| APA | Guan, Chao,Li, Xinrong,Zhang, Peng,&Chen, Yongle.(2018).Diel hysteresis between soil respiration and soil temperature in a biological soil crust covered desert ecosystem.PLOS ONE,13(4),13. |
| MLA | Guan, Chao,et al."Diel hysteresis between soil respiration and soil temperature in a biological soil crust covered desert ecosystem".PLOS ONE 13.4(2018):13. |
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来源：寒区旱区环境与工程研究所
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