Transformation from natural to wheat ecosystems enhances fine roots production and soil organic carbon input in an arid region

doi:10.1080/15324982.2019.1566282

CORC > 植物研究所 > 中国科学院植物研究所 > 中科院北方资源植物重点实验室

	Transformation from natural to wheat ecosystems enhances fine roots production and soil organic carbon input in an arid region
	Zhao, Xue-Chun ; Liu, Xin ; Tian, Si-Hui ; Yang, Qi 3; Zheng, Yuan-Run
刊名	ARID LAND RESEARCH AND MANAGEMENT
	2019
卷号	33 期号:4 页码:449-467
关键词	Agricultural activities arid ecosystems decomposition rate fine roots dynamics fine roots turnover soil factors
ISSN号	1532-4982
DOI	10.1080/15324982.2019.1566282
文献子类	Article
英文摘要	In arid regions, fine roots turnover contributes directly to soil carbon and nutrient cycling. However, less information is available on how increasing agricultural activities influence those dynamics. Fine roots biomass, production, and turnover rate were measured by sequential soil cores based on the maximum-minimum method in the 0-60 cm soil layer in three agricultural ecosystems and three natural ecosystems. Most (87% in agricultural and 75% in natural ecosystems) fine roots were distributed in the upper 30 cm soil layer. Mean annual fine roots production and turnover were 457% and 464% greater in agricultural than in natural ecosystems. Soil organic carbon input by fine roots decomposition was 91 g m(-2) yr(-1) in agricultural and 11 g m(-2) yr(-1) in natural ecosystems. Both fine roots biomass and fine roots production were significantly higher for two winter wheat (Triticum aestivum) ecosystems from May to October, 2010. Soil pH ranged from 8.2 to 9.4. Soil water content in agricultural ecosystems was higher, whereas soil electrical conductivity was lower than that in natural ecosystems. pH, soil bulk density, gravimetric soil water content, and soil electrical conductivity significantly affected fine roots biomass, production, turnover, and decomposition in all ecosystems investigated. The findings increase our understanding of the soil carbon cycle after natural ecosystems are modified into agricultural ecosystems.
学科主题	Environmental Sciences ; Soil Science
电子版国际标准刊号	1532-4990
出版地	PHILADELPHIA
WOS关键词	NORWAY SPRUCE FOREST ; DOUGLAS-FIR ; DYNAMICS ; BIOMASS ; TURNOVER ; DECOMPOSITION ; DESERT ; GROWTH ; STANDS ; DISTRIBUTIONS
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
语种	英语
出版者	TAYLOR & FRANCIS INC
WOS记录号	WOS:000487531600006
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/19527]
专题	中科院北方资源植物重点实验室
作者单位	1.Liu, Xin 2.[Zhao, Xue-Chun 3.Tian, Si-Hui 4.Guizhou Univ, Coll Anim Sci, Guiyang, Guizhou, Peoples R China 5.Chinese Acad Sci, Inst Bot, Beijing Bot Garden, Key Lab Resource Plants, Xiangshan, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Xue-Chun,Liu, Xin,Tian, Si-Hui,et al. Transformation from natural to wheat ecosystems enhances fine roots production and soil organic carbon input in an arid region[J]. ARID LAND RESEARCH AND MANAGEMENT,2019,33(4):449-467.
APA	Zhao, Xue-Chun,Liu, Xin,Tian, Si-Hui,Yang, Qi,&Zheng, Yuan-Run.(2019).Transformation from natural to wheat ecosystems enhances fine roots production and soil organic carbon input in an arid region.ARID LAND RESEARCH AND MANAGEMENT,33(4),449-467.
MLA	Zhao, Xue-Chun,et al."Transformation from natural to wheat ecosystems enhances fine roots production and soil organic carbon input in an arid region".ARID LAND RESEARCH AND MANAGEMENT 33.4(2019):449-467.