Effect of global warming on soil respiration and cumulative carbon release in biocrust-dominated areas in the Tengger Desert, northern China
文献类型：期刊论文
| 作者 | Guan, Chao1,2; Li, Xinrong1; Zhang, Peng1; Li, Chenhui3 |
| 刊名 | JOURNAL OF SOILS AND SEDIMENTS
 |
| 出版日期 | 2019-03-01 |
| 卷号 | 19期号:3页码:1161-1170 |
| 关键词 | Biological soil crust Precipitation Seasonality Soil respiration Stimulated warming Cumulative C release |
| ISSN号 | 1439-0108 |
| DOI | 10.1007/s11368-018-2171-4 |
| 通讯作者 | Guan, Chao(guanchao880421@163.com) |
| 英文摘要 | PurposeGlobal warming is expected to have profound effects on terrestrial carbon (C) fluxes, consequently influencing future climate. Biocrusts are important sources of C in the C cycle of desert ecosystems, where vascular plants are restricted by limited soil moisture. This study was conducted in order to evaluate the expected increases in temperature on soil respiration in biocrust-dominated areas.Materials and methodsIn a field warming experiment, we evaluated the impact of increased temperature on soil respiration in biocrust-dominated (moss-crusted and lichen-crusted) areas in Shapotou, China. In addition, the impacts of precipitation, soil temperature, and moisture on soil respiration were investigated.Results and discussionThe effect of warming on soil respiration varied with soil water availability. Our results showed that soil respiration in moss-crusted and lichen-crusted areas in the warming treatment was significantly lower than that in the control. The observed inhibition of soil respiration by the increase in soil temperature was likely due to the reduction in soil moisture caused by the increased water evaporation rate under higher soil temperature. Warming also decreased cumulative C release in moss-crusted and lichen-crusted areas. Moreover, cumulative C release showed marked seasonal variations, with the highest C release occurring in summer and the lowest in winter. Over the seasonal cycle, soil respiration rates were positively correlated with precipitation, soil temperature, and volumetric soil water content.ConclusionsThe results of this study indicate that warming may increase the sensitivity of soil respiration to water availability in biocrust-dominated areas in desert ecosystems, suggesting that biocrust should be considered in projections of future C budget. |
| 收录类别 | SCI |
| WOS关键词 | CLIMATE-CHANGE ; MICROBIAL RESPIRATION ; NITROGEN ADDITION ; TEMPERATE DESERT ; NET ECOSYSTEM ; CO2 EFFLUX ; PRECIPITATION ; RESPONSES ; CRUSTS ; WATER |
| WOS研究方向 | Environmental Sciences & Ecology ; Agriculture |
| WOS类目 | Environmental Sciences ; Soil Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000459805400011 |
| 出版者 | SPRINGER HEIDELBERG |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2555555 |
| 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, Northwest Inst Ecoenvironm & Resources, Shapotou Desert Res & Expt Stn, Lanzhou 730000, Gansu, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Univ Missouri, Sch Nat Resources, Columbia, MO 65201 USA |
| 推荐引用方式 GB/T 7714 | Guan, Chao,Li, Xinrong,Zhang, Peng,et al. Effect of global warming on soil respiration and cumulative carbon release in biocrust-dominated areas in the Tengger Desert, northern China[J]. JOURNAL OF SOILS AND SEDIMENTS,2019,19(3):1161-1170. |
| APA | Guan, Chao,Li, Xinrong,Zhang, Peng,&Li, Chenhui.(2019).Effect of global warming on soil respiration and cumulative carbon release in biocrust-dominated areas in the Tengger Desert, northern China.JOURNAL OF SOILS AND SEDIMENTS,19(3),1161-1170. |
| MLA | Guan, Chao,et al."Effect of global warming on soil respiration and cumulative carbon release in biocrust-dominated areas in the Tengger Desert, northern China".JOURNAL OF SOILS AND SEDIMENTS 19.3(2019):1161-1170. |
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来源：寒区旱区环境与工程研究所
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