Responses of soil respiration to elevated carbon dioxide in China
نویسندگان
چکیده
Responses of soil respiration to elevated carbon dioxide and nitrogen addition in subtropical forest ecosystems in China Q. Deng, G. Zhou, J. Liu, S. Liu, H. Duan, and D. Zhang South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China Graduate University of Chinese Academy of Sciences, Beijing 100039, China Received: 16 June 2009 – Accepted: 7 August 2009 – Published: 24 August 2009 Correspondence to: D. Zhang ([email protected]) Published by Copernicus Publications on behalf of the European Geosciences Union.
منابع مشابه
Warming Reduces Carbon Losses from Grassland Exposed to Elevated Atmospheric Carbon Dioxide
The flux of carbon dioxide (CO2) between terrestrial ecosystems and the atmosphere may ameliorate or exacerbate climate change, depending on the relative responses of ecosystem photosynthesis and respiration to warming temperatures, rising atmospheric CO2, and altered precipitation. The combined effect of these global change factors is especially uncertain because of their potential for interac...
متن کاملDivergent Effects of Nitrogen Addition on Soil Respiration in a Semiarid Grassland
Nitrogen (N) deposition has been steadily increasing for decades, with consequences for soil respiration. However, we have a limited understanding of how soil respiration responds to N availability. Here, we investigated the soil respiration responses to low and high levels of N addition (0.4 mol N m(-2) yr(-1) vs 1.6 mol N m(-2) yr(-1)) over a two-year period in a semiarid Leymus chinensis gra...
متن کاملSoil microbial community composition and respiration along an experimental precipitation gradient in a semiarid steppe.
As a primary limiting factor in arid and semiarid regions, precipitation strongly influences soil microbial properties. However, the patterns and mechanisms of soil microbial responses to precipitation have not been well documented. In this study, changes in soil microorganisms along an experimental precipitation gradient with seven levels of precipitation manipulation (i.e., ambient precipitat...
متن کاملCO2 Emission Increases with Damage Severity in Moso Bamboo Forests Following a Winter Storm in Southern China
Despite the prevalence of disturbances in forests, the effects of disturbances on soil carbon processes are not fully understood. We examined the influences of a winter storm on soil respiration and labile soil organic carbon (SOC) of a Moso Bamboo (Phyllostachys heterocycle) plantation in the Wuyi Mountains in Southern China from May 2008 to May 2009. We sampled stands that were damaged at hea...
متن کاملSeparating rhizosphere respiration from total soil respiration in two larch plantations in northeastern China.
The potential capacity of soil to sequester carbon in response to global warming is strongly regulated by the ratio of rhizosphere respiration to respiration by soil microbial decomposers, because of their different temperature sensitivities. To quantify relative contributions of rhizosphere respiration to total soil respiration as influenced by forest stand development, we conducted a trenchin...
متن کامل