Will elevated CO2 enhance mineral bioavailability in wetland ecosystems? Evidence from a rice ecosystem

doi:10.1007/s11104-011-1096-0

	Will elevated CO2 enhance mineral bioavailability in wetland ecosystems? Evidence from a rice ecosystem
	Guo, Jia 2,3; Zhang, Weijian 1,3; Zhang, Mingqian 3; Zhang, Li 3; Bian, Xinmin 3
刊名	PLANT AND SOIL
	2012
卷号	355 期号:1-2 页码:251-263
关键词	Agricultural wetlands Climate change Food security Free air CO2 enrichment (FACE) Mineral cycling Soil acidification
ISSN号	0032-079X
DOI	10.1007/s11104-011-1096-0
通讯作者	Guo, Jia
英文摘要	Mineral cycling plays a critical role in wetland ecosystem functions and can be affected by environmental changes, such as CO2 enrichment. Learning the responses of mineral bioavailability in wetlands to elevated CO2 under field conditions will provide enormous benefits to the assessment of climate change impacts on wetland ecosystems.A free-air CO2 enrichment (FACE) experiment was conducted in a rice ecosystem in Jiangsu, China, with two nitrogen (N) application levels. Responses of K, Ca, Mg, Fe, Mn, Zn, and Si in this ecosystem were investigated in situ.CO2 enrichment increased rice biomass Ca, Mg, Fe, Mn, Zn, and Si regardless of N application levels. Dissolved mineral contents in surface water and available mineral contents in the 0-15 cm soil layer were higher in the FACE plots than in the ambient under both N levels. Elevated CO2 reduced the pH values of the 0-15 cm soil layer and surface water, but increased the cation exchange capacity of the soil layer. The effects of N treatment and its interaction with CO2 enrichment were mostly insignificant on the above parameters.Our results indicate that CO2 enrichment can enhance mineral bioavailability in a rice ecosystem through accelerating mineral transformation from the bio-inactive reservoirs to the bioactive ones.
学科主题	Agronomy ; Plant Sciences ; Soil Science ; AGRONOMY ; PLANT SCIENCES ; SOIL SCIENCE
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000304617000019
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/5156]
专题	作物科学研究所_栽培生理学系
作者单位	1.Chinese Acad Agr Sci, Inst Crop Sci, Key Lab Crop Ecol Physiol & Prod, Minist Agr, Beijing 100081, Peoples R China 2.Chinese Acad Forestry, Inst Wetland Res, Beijing 100091, Peoples R China 3.Nanjing Agr Univ, Inst Appl Ecol, Nanjing 210095, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Guo, Jia,Zhang, Weijian,Zhang, Mingqian,et al. Will elevated CO2 enhance mineral bioavailability in wetland ecosystems? Evidence from a rice ecosystem[J]. PLANT AND SOIL,2012,355(1-2):251-263.
APA	Guo, Jia,Zhang, Weijian,Zhang, Mingqian,Zhang, Li,&Bian, Xinmin.(2012).Will elevated CO2 enhance mineral bioavailability in wetland ecosystems? Evidence from a rice ecosystem.PLANT AND SOIL,355(1-2),251-263.
MLA	Guo, Jia,et al."Will elevated CO2 enhance mineral bioavailability in wetland ecosystems? Evidence from a rice ecosystem".PLANT AND SOIL 355.1-2(2012):251-263.