干旱区生态环境知识资源中心(Arid): Transformation from natural to wheat ecosystems enhances fine roots production and soil organic carbon input in an arid region

Arid

DOI	10.1080/15324982.2019.1566282
	Transformation from natural to wheat ecosystems enhances fine roots production and soil organic carbon input in an arid region
	Zhao, Xue-Chun 1,2; Liu, Xin 1,2; Tian, Si-Hui 1; Yang, Qi 1; Zheng, Yuan-Run 2
通讯作者	Zheng, Yuan-Run
来源期刊	ARID LAND RESEARCH AND MANAGEMENT
ISSN	1532-4982
EISSN	1532-4990
出版年	2019
卷号	33 期号:4 页码:449-467
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.
英文关键词	Agricultural activities arid ecosystems decomposition rate fine roots dynamics fine roots turnover soil factors
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000487531600006
WOS关键词	NORWAY SPRUCE FOREST ; DOUGLAS-FIR ; DYNAMICS ; BIOMASS ; TURNOVER ; DECOMPOSITION ; DESERT ; GROWTH ; STANDS ; DISTRIBUTIONS
WOS类目	Environmental Sciences ; Soil Science
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214398
作者单位	1.Guizhou Univ, Coll Anim Sci, Guiyang, Guizhou, Peoples R China; 2.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],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.