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

文献类型：期刊论文

作者Zhao, Xue-Chun; Liu, Xin; Tian, Si-Hui; Yang, Qi1; Zheng, Yuan-Run
刊名ARID LAND RESEARCH AND MANAGEMENT
出版日期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
DOI10.1080/15324982.2019.1566282
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
出版地PHILADELPHIA
电子版国际标准刊号1532-4990
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
WOS记录号WOS:000487531600006
出版者TAYLOR & FRANCIS INC
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.Tian, Si-Hui
2.Liu, Xin
3.Guizhou Univ, Coll Anim Sci, Guiyang, Guizhou, Peoples R China
4.Chinese Acad Sci, Inst Bot, Beijing Bot Garden, Key Lab Resource Plants, Xiangshan, Peoples R China
5.[Zhao, Xue-Chun
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.

入库方式： OAI收割

来源：植物研究所

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