Significance of temperature and soil water content on soil respiration in three desert ecosystems in Northwest China
文献类型：期刊论文
| 作者 | Zhang ; L. H. ; Chen ; Y. N. ; Zhao ; R. F. ; Li ; W. H. |
| 刊名 | JOURNAL OF ARID ENVIRONMENTS
 |
| 出版日期 | 2010 |
| 卷号 | 74期号:10页码:1200-1211 |
| 关键词 | ORGANIC-MATTER DECOMPOSITION MIXED-HARDWOOD FOREST GLOBAL CARBON-CYCLE CO2 EFFLUX PRECIPITATION PULSES SEMIARID ECOSYSTEMS TEMPORAL VARIATION MICROBIAL BIOMASS PINE PLANTATION FLUXES |
| ISSN号 | 0140-1963 |
| 通讯作者 | Chen, YN, Chinese Acad Sci, Key Lab Oasis Ecol & Desert Environm, Xinjiang Inst Ecol & Geog, Urumqi 830011, Peoples R China |
| 中文摘要 | It is crucial to understand how abiotic factors influence soil respiration and to determine, in a quantitative manner, the site variation of abiotic regulators in desert ecosystems. In this study, soil respiration was measured using an automated CO2 efflux system (LI-COR 8100) in 2005 and 2006. Additionally, the effects of soil temperature, moisture and a short-term precipitation manipulation on the rate of soil respiration were examined in Haloxylon ammodendron, Anabasis aphylla and Halostachys caspica in three distinct desert ecosystems. The difference in soil respiration among sites was significant. Air temperature explained 35-65% of the seasonal changes in soil respiration when an exponential equation was used. The effect of temperature on soil respiration and temperature sensitivity was stronger at sites with higher soil moisture. Soil respiration was significantly positively correlated with soil moisture. Amounts of variation in soil respiration explained by temperature and gravimetric water content were 41-44% in H. ammodendron, 62-65% in A. aphylla and 67-84% in H. caspica sites. Artificial rainfall treatments of 5 mm, 2.5 mm and 0 mm (control) were conducted. Soil respiration increased in a small pulse following rainfall. Temperature dominantly influenced soil respiration and soil water content enhanced the response of respiration to temperature. (C) 2010 Elsevier Ltd. All rights reserved. |
| 学科主题 | 自然地理学 |
| 收录类别 | SCI |
| 公开日期 | 2011-08-19 |
| 源URL | [http://ir.xjlas.org/handle/365004/9918]  |
| 专题 | 新疆生态与地理研究所_中国科学院新疆生态与地理研究所(2010年以前数据) |
| 推荐引用方式 GB/T 7714 | Zhang,L. H.,Chen,et al. Significance of temperature and soil water content on soil respiration in three desert ecosystems in Northwest China[J]. JOURNAL OF ARID ENVIRONMENTS,2010,74(10):1200-1211. |
| APA | Zhang.,L. H..,Chen.,Y. N..,Zhao.,...&W. H..(2010).Significance of temperature and soil water content on soil respiration in three desert ecosystems in Northwest China.JOURNAL OF ARID ENVIRONMENTS,74(10),1200-1211. |
| MLA | Zhang,et al."Significance of temperature and soil water content on soil respiration in three desert ecosystems in Northwest China".JOURNAL OF ARID ENVIRONMENTS 74.10(2010):1200-1211. |
入库方式： OAI收割
来源：新疆生态与地理研究所
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