Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1371/journal.pone.0114558 |
Influence of Soil Moisture on Litter Respiration in the Semiarid Loess Plateau | |
Zhang, Yanjun1; Guo, Shengli1,2,3,4; Liu, Qingfang4; Jiang, Jishao2,3 | |
通讯作者 | Guo, Shengli |
来源期刊 | PLOS ONE
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ISSN | 1932-6203 |
出版年 | 2014 |
卷号 | 9期号:12 |
英文摘要 | Understanding the response mechanisms of litter respiration to soil moisture in water-limited semi-arid regions is of vital importance to better understanding the interplay between ecological processes and the local carbon cycle. In situ soil respiration was monitored during 2010-2012 under various conditions (normal litter, no litter, and double litter treatments) in a 30-year-old artificial black locust plantation (Robinia pseudoacacia L.) on the Loess Plateau. Litter respiration with normal and double litter treatments exhibited similar seasonal variation, with the maximum value obtained in summer (0.57 and 1.51 mmol m(-2) s(-1) under normal and double litter conditions, respectively) and the minimum in spring (0.27 and 0.69 mu mol m(-2) s(-1) under normal and double litter conditions, respectively). On average, annual cumulative litter respiration was 115 and 300 g C m(-2) y-(1) under normal and double litter conditions, respectively. Using a soil temperature of 17 degrees C as the critical point, the relationship between litter respiration and soil moisture was found to follow quadratic functions well, whereas the determination coefficient was much greater at high soil temperature than at low soil temperature (33-35% vs. 2224%). Litter respiration was significantly higher in 2010 and 2012 than in 2011 under both normal litter (132-165 g C m(-2) y(-1) vs. 48 g C m(-2) y(-1)) and double litter (389-418 g C m(-2) y(-1) vs. 93 g C m(-2) y(-1)) conditions. Such significant interannual variations were largely ascribed to the differences in summer rainfall. Our study demonstrates that, apart from soil temperature, moisture |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000346382500046 |
WOS关键词 | BELOW-GROUND LITTER ; ABOVEGROUND LITTER ; CO2 EFFLUX ; RHIZOSPHERE RESPIRATION ; TEMPERATURE-DEPENDENCE ; FOREST ECOSYSTEMS ; ORGANIC-MATTER ; WATER-CONTENT ; DECOMPOSITION ; CARBON |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
来源机构 | 西北农林科技大学 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/184422 |
作者单位 | 1.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dry Land Farming Loess, Yangling, Peoples R China; 2.Chinese Acad Sci, Inst Soil & Water Conservat, Yangling, Peoples R China; 3.Minist Water Resource, Yangling, Peoples R China; 4.Northwest A&F Univ, Coll Resources & Environm, Yangling, Peoples R China |
推荐引用方式 GB/T 7714 | Zhang, Yanjun,Guo, Shengli,Liu, Qingfang,et al. Influence of Soil Moisture on Litter Respiration in the Semiarid Loess Plateau[J]. 西北农林科技大学,2014,9(12). |
APA | Zhang, Yanjun,Guo, Shengli,Liu, Qingfang,&Jiang, Jishao.(2014).Influence of Soil Moisture on Litter Respiration in the Semiarid Loess Plateau.PLOS ONE,9(12). |
MLA | Zhang, Yanjun,et al."Influence of Soil Moisture on Litter Respiration in the Semiarid Loess Plateau".PLOS ONE 9.12(2014). |
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