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Mapping the vertical distribution of maize roots in China in relation to climate and soil texture
Wang, Sheng1; Huang, Yao1; Sun, Wenjuan; Yu, Lingfei
2018
发表期刊JOURNAL OF PLANT ECOLOGY
ISSN1752-9921
卷号11期号:6页码:899-908
摘要Aims Optimizing water and fertilizer management for crops requires an understanding of root distribution. Maize (Zea mays L.) is currently the most widely planted cereal crop in China, yet the vertical distribution of maize roots across different regions remains unknown. The aims of this work were (i) to quantify the effects of climate and soil texture on the vertical distribution of maize roots, and (ii) to show the depth distribution of root biomass in China. Methods We used data of maize root biomass from 11 Chinese ecological stations with discontinuous observations from 2004 to 2014 to fit the regression coefficient beta for an asymptotic equation Y = 1 - beta(d), where d is the soil depth and Y is the proportion of root biomass from the surface to depth d. A statistical model was then developed to quantify the effects of climate and soil texture on the fitted beta values. Using the statistical model, we map the depth distribution of maize root biomass in China. Important Findings Maize root biomass in the 0-100 cm soil depth varied by an order of magnitude at different stations, from 64 to 268 g m(-2). Maize planted in sandy soils and/or maize with high accumulated temperature for development had higher root biomass and deeper rooting systems. The fitted beta values ranged from 0.785 to 0.977, which can be modeled by an integration of the accumulated temperature during the maize growing period and the soil clay and sand fractions (R-2 = 0.66, n = 50, P < 0.001). Up to 82% of maize planting regions in China showed shallower rooting systems where more than 90% and 95% of the root biomass occurred in the top 20 and 30 cm soil layers, respectively. Deeper rooting systems occurred in some temperate arid and temperate semi-arid regions, with less than 80% of the root biomass in the top 20 cm soil. Our findings highlighted the vertical distribution of maize roots, and underlined the spatial variability in the vertical distribution of roots across China's planting areas of maize.
关键词accumulated temperature maize root soil texture statistical model vertical distribution
学科领域Plant Sciences ; Ecology ; Forestry
DOI10.1093/jpe/rty015
收录类别SCI
语种英语
WOS关键词WATER STATUS ; NITROGEN REGIMES ; ORGANIC-MATTER ; WINTER-WHEAT ; BULK-DENSITY ; GROWTH ; IRRIGATION ; BIOMASS ; CARBON ; YIELD
WOS记录号WOS:000456053600010
出版者OXFORD UNIV PRESS
文献子类Article
出版地OXFORD
EISSN1752-993X
资助机构National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41530533, 31370492]
作者邮箱huangyao@ibcas.ac.cn
作品OA属性Bronze
引用统计
被引频次:9[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ibcas.ac.cn/handle/2S10CLM1/20422
专题植被与环境变化国家重点实验室
作者单位1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, 20 Nanxincun, Beijing 100093, Peoples R China
2.Univ Chinese Acad Sci, 19 Yuquan Rd, Beijing 100049, Peoples R China
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GB/T 7714
Wang, Sheng,Huang, Yao,Sun, Wenjuan,et al. Mapping the vertical distribution of maize roots in China in relation to climate and soil texture[J]. JOURNAL OF PLANT ECOLOGY,2018,11(6):899-908.
APA Wang, Sheng,Huang, Yao,Sun, Wenjuan,&Yu, Lingfei.(2018).Mapping the vertical distribution of maize roots in China in relation to climate and soil texture.JOURNAL OF PLANT ECOLOGY,11(6),899-908.
MLA Wang, Sheng,et al."Mapping the vertical distribution of maize roots in China in relation to climate and soil texture".JOURNAL OF PLANT ECOLOGY 11.6(2018):899-908.
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