Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s11284-014-1177-7 |
Biological soil crusts influence carbon release responses following rainfall in a temperate desert, northern China | |
Zhao, Yang; Li, Xinrong; Zhang, Zhishang; Hu, Yigang; Chen, Yongle | |
通讯作者 | Zhao, Yang |
来源期刊 | ECOLOGICAL RESEARCH |
ISSN | 0912-3814 |
EISSN | 1440-1703 |
出版年 | 2014 |
卷号 | 29期号:5页码:889-896 |
英文摘要 | How soil cover types and rainfall patterns influence carbon (C) release in temperate desert ecosystems has largely been unexplored. We removed intact crusts down to 10 cm from the Shapotou region, China, and measured them in PVC mesocosms, immediately after rainfall. C release rates were measured in soils with four cover types (moss-crusted soil, algae-crusted soil, mixed (composed of moss, algae, and lichen)-crusted soil, and mobile dune sand). We investigated seven different rainfall magnitudes (0-1, 1-2, 2-5, 5-10, 10-15, 15-20, and > 20 mm) under natural conditions. C release from all four BSCs increased with increasing rainfall amount. With a rainfall increase from 0 to 45 mm, carbon release amounts increased from 0.13 +/- A 0.09 to 15.2 +/- A 1.35 gC m(-2) in moss-crusted soil, 0.08 +/- A 0.06 to 6.43 +/- A 1.23 gC m(-2) in algae-crusted soil, 0.11 +/- A 0.08 to 8.01 +/- A 0.51 gC m(-2) in mixed-crusted soil, and 0.06 +/- A 0.04 to 8.47 +/- A 0.51 gC m(-2) in mobile dune sand, respectively. Immediately following heavy rainfall events (44.9 mm), moss-crusted soils showed significantly higher carbon release rates than algae- and mixed-crusted soils and mobile dune sands, which were 0.95 +/- A 0.02, 0.30 +/- A 0.03, 0.13 +/- A 0.04, and 0.51 +/- A 0.02 mu mol CO2 m(-2) s(-1), respectively. Changes in rainfall patterns, especially large rain pulses (> 10 mm) affect the contributions of different soil cover types to carbon release amounts; moss-crusted soils sustain higher respiration rates than other biological crusts after short-term extreme rainfall events. |
英文关键词 | Arid regions Biological soil crusts Extreme rainfall event Rainfall pattern Tengger Desert |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000342219200011 |
WOS关键词 | PRECIPITATION PULSES ; DIOXIDE FLUXES ; EXCHANGE ; RESPIRATION ; PHOTOSYNTHESIS ; REVEGETATION ; PHYSIOLOGY ; REGIONS ; EVENTS ; CYCLES |
WOS类目 | Ecology |
WOS研究方向 | Environmental Sciences & Ecology |
来源机构 | 中国科学院西北生态环境资源研究院 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/181704 |
作者单位 | Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Shapotou Desert Res & Expt Stn, Lanzhou 730000, Peoples R China |
推荐引用方式 GB/T 7714 | Zhao, Yang,Li, Xinrong,Zhang, Zhishang,et al. Biological soil crusts influence carbon release responses following rainfall in a temperate desert, northern China[J]. 中国科学院西北生态环境资源研究院,2014,29(5):889-896. |
APA | Zhao, Yang,Li, Xinrong,Zhang, Zhishang,Hu, Yigang,&Chen, Yongle.(2014).Biological soil crusts influence carbon release responses following rainfall in a temperate desert, northern China.ECOLOGICAL RESEARCH,29(5),889-896. |
MLA | Zhao, Yang,et al."Biological soil crusts influence carbon release responses following rainfall in a temperate desert, northern China".ECOLOGICAL RESEARCH 29.5(2014):889-896. |
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