Soil respiration in relation to photosynthesis of Quercus mongolica trees at elevated CO2. 2010

Yumei Zhou, and Mai-He Li, and Xu-Bing Cheng, and Cun-Guo Wang, and A-Nan Fan, and Lian-Xuan Shi, and Xiu-Xiu Wang, and Shijie Han
Department of Forest Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China.

Knowledge of soil respiration and photosynthesis under elevated CO(2) is crucial for exactly understanding and predicting the carbon balance in forest ecosystems in a rapid CO(2)-enriched world. Quercus mongolica Fischer ex Ledebour seedlings were planted in open-top chambers exposed to elevated CO(2) (EC = 500 µmol mol(-1)) and ambient CO(2) (AC = 370 µmol mol(-1)) from 2005 to 2008. Daily, seasonal and inter-annual variations in soil respiration and photosynthetic assimilation were measured during 2007 and 2008 growing seasons. EC significantly stimulated the daytime soil respiration by 24.5% (322.4 at EC vs. 259.0 mg CO(2) m(-2) hr(-1) at AC) in 2007 and 21.0% (281.2 at EC vs. 232.6 mg CO(2) m(-2) hr(-1) at AC) in 2008, and increased the daytime CO(2) assimilation by 28.8% (624.1 at EC vs. 484.6 mg CO(2) m(-2) hr(-1) at AC) across the two growing seasons. The temporal variation in soil respiration was positively correlated with the aboveground photosynthesis, soil temperature, and soil water content at both EC and AC. EC did not affect the temperature sensitivity of soil respiration. The increased daytime soil respiration at EC resulted mainly from the increased aboveground photosynthesis. The present study indicates that increases in CO(2) fixation of plants in a CO(2)-rich world will rapidly return to the atmosphere by increased soil respiration.

UI MeSH Term Description Entries
D010788 Photosynthesis The synthesis by organisms of organic chemical compounds, especially carbohydrates, from carbon dioxide using energy obtained from light rather than from the oxidation of chemical compounds. Photosynthesis comprises two separate processes: the light reactions and the dark reactions. In higher plants; GREEN ALGAE; and CYANOBACTERIA; NADPH and ATP formed by the light reactions drive the dark reactions which result in the fixation of carbon dioxide. (from Oxford Dictionary of Biochemistry and Molecular Biology, 2001) Calvin Cycle,Calvin-Benson Cycle,Calvin-Benson-Bassham Cycle,Carbon Fixation, Photosynthetic,Reductive Pentose Phosphate Cycle,Dark Reactions of Photosynthesis,Calvin Benson Bassham Cycle,Calvin Benson Cycle,Cycle, Calvin,Cycle, Calvin-Benson,Cycle, Calvin-Benson-Bassham,Photosynthesis Dark Reaction,Photosynthesis Dark Reactions,Photosynthetic Carbon Fixation
D002245 Carbon Dioxide A colorless, odorless gas that can be formed by the body and is necessary for the respiration cycle of plants and animals. Carbonic Anhydride,Anhydride, Carbonic,Dioxide, Carbon
D012621 Seasons Divisions of the year according to some regularly recurrent phenomena usually astronomical or climatic. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed) Seasonal Variation,Season,Seasonal Variations,Variation, Seasonal,Variations, Seasonal
D012987 Soil The unconsolidated mineral or organic matter on the surface of the earth that serves as a natural medium for the growth of land plants. Peat,Humus,Soils
D013696 Temperature The property of objects that determines the direction of heat flow when they are placed in direct thermal contact. The temperature is the energy of microscopic motions (vibrational and translational) of the particles of atoms. Temperatures
D014197 Trees Woody, usually tall, perennial higher plants (Angiosperms, Gymnosperms, and some Pterophyta) having usually a main stem and numerous branches. Tree
D017753 Ecosystem A functional system which includes the organisms of a natural community together with their environment. (McGraw Hill Dictionary of Scientific and Technical Terms, 4th ed) Ecosystems,Biome,Ecologic System,Ecologic Systems,Ecological System,Habitat,Niche, Ecological,System, Ecological,Systems, Ecological,Biomes,Ecological Niche,Ecological Systems,Habitats,System, Ecologic,Systems, Ecologic
D018515 Plant Leaves Expanded structures, usually green, of vascular plants, characteristically consisting of a bladelike expansion attached to a stem, and functioning as the principal organ of photosynthesis and transpiration. (American Heritage Dictionary, 2d ed) Plant Leaf,Leaf, Plant,Leave, Plant,Leaves, Plant,Plant Leave
D018517 Plant Roots The usually underground portions of a plant that serve as support, store food, and through which water and mineral nutrients enter the plant. (From American Heritage Dictionary, 1982; Concise Dictionary of Biology, 1990) Plant Bulbs,Plant Root,Bulb, Plant,Bulbs, Plant,Plant Bulb,Root, Plant,Roots, Plant
D018521 Plant Physiological Phenomena The physiological processes, properties, and states characteristic of plants. Plant Physiological Processes,Plant Physiology,Physiology, Plant,Plant Physiologic Phenomena,Plant Physiologic Phenomenon,Plant Physiological Phenomenon,Plant Physiological Process,Phenomena, Plant Physiologic,Phenomena, Plant Physiological,Phenomenon, Plant Physiologic,Phenomenon, Plant Physiological,Phenomenons, Plant Physiological,Physiologic Phenomena, Plant,Physiologic Phenomenon, Plant,Physiological Phenomena, Plant,Physiological Phenomenon, Plant,Physiological Phenomenons, Plant,Physiological Process, Plant,Physiological Processes, Plant,Plant Physiological Phenomenons,Process, Plant Physiological,Processes, Plant Physiological

Related Publications

Yumei Zhou, and Mai-He Li, and Xu-Bing Cheng, and Cun-Guo Wang, and A-Nan Fan, and Lian-Xuan Shi, and Xiu-Xiu Wang, and Shijie Han
September 2006, Ying yong sheng tai xue bao = The journal of applied ecology,
Yumei Zhou, and Mai-He Li, and Xu-Bing Cheng, and Cun-Guo Wang, and A-Nan Fan, and Lian-Xuan Shi, and Xiu-Xiu Wang, and Shijie Han
July 2017, Ying yong sheng tai xue bao = The journal of applied ecology,
Yumei Zhou, and Mai-He Li, and Xu-Bing Cheng, and Cun-Guo Wang, and A-Nan Fan, and Lian-Xuan Shi, and Xiu-Xiu Wang, and Shijie Han
March 2010, Ying yong sheng tai xue bao = The journal of applied ecology,
Yumei Zhou, and Mai-He Li, and Xu-Bing Cheng, and Cun-Guo Wang, and A-Nan Fan, and Lian-Xuan Shi, and Xiu-Xiu Wang, and Shijie Han
March 2022, Current microbiology,
Yumei Zhou, and Mai-He Li, and Xu-Bing Cheng, and Cun-Guo Wang, and A-Nan Fan, and Lian-Xuan Shi, and Xiu-Xiu Wang, and Shijie Han
May 2001, Tree physiology,
Yumei Zhou, and Mai-He Li, and Xu-Bing Cheng, and Cun-Guo Wang, and A-Nan Fan, and Lian-Xuan Shi, and Xiu-Xiu Wang, and Shijie Han
November 2015, Environmental pollution (Barking, Essex : 1987),
Yumei Zhou, and Mai-He Li, and Xu-Bing Cheng, and Cun-Guo Wang, and A-Nan Fan, and Lian-Xuan Shi, and Xiu-Xiu Wang, and Shijie Han
February 2012, The Science of the total environment,
Yumei Zhou, and Mai-He Li, and Xu-Bing Cheng, and Cun-Guo Wang, and A-Nan Fan, and Lian-Xuan Shi, and Xiu-Xiu Wang, and Shijie Han
September 2020, Tree physiology,
Yumei Zhou, and Mai-He Li, and Xu-Bing Cheng, and Cun-Guo Wang, and A-Nan Fan, and Lian-Xuan Shi, and Xiu-Xiu Wang, and Shijie Han
October 2011, Ying yong sheng tai xue bao = The journal of applied ecology,
Yumei Zhou, and Mai-He Li, and Xu-Bing Cheng, and Cun-Guo Wang, and A-Nan Fan, and Lian-Xuan Shi, and Xiu-Xiu Wang, and Shijie Han
April 2009, Bulletin of environmental contamination and toxicology,
Copied contents to your clipboard!