Chin J Plant Ecol ›› 2017, Vol. 41 ›› Issue (6): 610-621.DOI: 10.17521/cjpe.2016.0329
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Wei HE1,2, Xue-Ying YANG3, Juan XIAO4, Zi-Liang ZHANG1,2, Zheng JIANG1,2, Yuan-Shuang YUAN1,2, Dong WANG1,2, Qing LIU1, Hua-Jun YIN1,4,*()
Received:
2017-04-05
Accepted:
2016-10-21
Online:
2017-06-10
Published:
2017-07-19
Contact:
Hua-Jun YIN
About author:
KANG Jing-yao(1991-), E-mail: Wei HE, Xue-Ying YANG, Juan XIAO, Zi-Liang ZHANG, Zheng JIANG, Yuan-Shuang YUAN, Dong WANG, Qing LIU, Hua-Jun YIN. Effects of nitrogen enrichment on root exudative carbon inputs in Sibiraea angustata shrubbery at the eastern fringe of Qinghai-Xizang Plateau[J]. Chin J Plant Ecol, 2017, 41(6): 610-621.
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URL: https://www.plant-ecology.com/EN/10.17521/cjpe.2016.0329
Fig. 1 Schematic drawing of root exudate collection device. A, Sample injection unit. B, Collection unit. C, Suction filter unit. 1, suction flask; 2, silicone tube; 3, drying tube; 4, vacuum pump.
植物类型 Plant type | 文献来源 Reference source | 植物种 Plant species | 单位根生物量根系 分泌物C输入速率 Root exudative C input rate per root biomass (μg·g-1·h-1) | 单位根长根系 分泌物C输入速率 Root exudative C input rate per root length (μg·cm-1·h-1) | 单位根表面积根系 分泌物C输入速率 Root exudative C input rate per root surface area (μg·cm-2·h-1) |
---|---|---|---|---|---|
草本 Herbs | Personeni et al., 2007 | 玉米 Zea mays | - | - | 2.10 |
Li & Chen, 2011 | 美人蕉 Canna indica | 175.42 | - | - | |
风车草 Cyperus flabelliformis | 220.00 | - | - | ||
水鬼蕉 Hymenocallis littoralis | 16.79 | - | - | ||
Cheng at al., 2016 | 小麦 Triticum aestivum | 4.07-1.19 | 0.056-0.012 | ||
平均值 Mean | 83.50 | 0.03 | 2.10 | ||
乔木 Trees | Phillips et al., 2009 | 火炬松 Pinus taeda | 2.00-40.00 | - | - |
Phillips et al., 2011 | 火炬松 Pinus taeda | 8.00-17.00 | 0.10-6.00 | - | |
Meier et al., 2013 | 火炬松 Pinus taeda | 32.00 | - | - | |
Yin et al., 2013a | 云杉 Picea asperata | - | 0.70 | 9.30 | |
冷杉 Abies faxoniana | - | 0.50 | 4.90 | ||
Yin et al., 2013b | 云杉 Picea asperata | 663.91-414.94 | 0.67-0.39 | 7.99-5.53 | |
Yin et al., 2014 | 北美鹅掌楸 Liriodendron tulipifera 糖枫 Acer saccharum | 9.58 | - | - | |
北美红栎 Quercus rubra 美洲水青冈木 Fagus grandifolia | 17.50 | - | - | ||
Zhang et al., 2016 | 云杉 Picea asperata | 396.76 | - | - | |
Li at al., 2014a | 9年生云杉人工林 9-year-old Picea asperata | 441.86 | 3.20 | 2.75 | |
13年生云杉人工林 13-year-old Picea asperata | 284.88 | 3.66 | 1.01 | ||
31年生云杉人工林 31-year-old Picea asperata | 315.89 | 3.56 | 1.52 | ||
Xiao, 2013 | 云杉幼苗 Picea asperata seedlings | 79.16 | 0.70 | 9.30 | |
冷杉幼苗 Abies faxoniana seedlings | 65.55 | 0.50 | 4.90 | ||
Qiao, 2015 | 云杉 Picea asperata | 570.93 | 0.50 | 4.44 | |
冷杉 Abies faxoniana | 579.71 | 0.51 | 5.52 | ||
Xiong et al., 2015 | 杉木 Cunninghamia lanceolata | 173.68-138.04 | 0.37-0.14 | 1.67-0.46 | |
米槠 Castanopsis carlesi | 92.72-56.16 | 0.34-0.06 | 1.27-0.24 | ||
平均值 Mean | 203.07 | 1.29 | 4.05 | ||
灌木 Shrubs | 本研究 This study | 窄叶鲜卑花 Sibiraea angustata | 26.22 | 0.02 | 0.29 |
Table 1 Comparison of root exudative carbon (C) input rates among studies
植物类型 Plant type | 文献来源 Reference source | 植物种 Plant species | 单位根生物量根系 分泌物C输入速率 Root exudative C input rate per root biomass (μg·g-1·h-1) | 单位根长根系 分泌物C输入速率 Root exudative C input rate per root length (μg·cm-1·h-1) | 单位根表面积根系 分泌物C输入速率 Root exudative C input rate per root surface area (μg·cm-2·h-1) |
---|---|---|---|---|---|
草本 Herbs | Personeni et al., 2007 | 玉米 Zea mays | - | - | 2.10 |
Li & Chen, 2011 | 美人蕉 Canna indica | 175.42 | - | - | |
风车草 Cyperus flabelliformis | 220.00 | - | - | ||
水鬼蕉 Hymenocallis littoralis | 16.79 | - | - | ||
Cheng at al., 2016 | 小麦 Triticum aestivum | 4.07-1.19 | 0.056-0.012 | ||
平均值 Mean | 83.50 | 0.03 | 2.10 | ||
乔木 Trees | Phillips et al., 2009 | 火炬松 Pinus taeda | 2.00-40.00 | - | - |
Phillips et al., 2011 | 火炬松 Pinus taeda | 8.00-17.00 | 0.10-6.00 | - | |
Meier et al., 2013 | 火炬松 Pinus taeda | 32.00 | - | - | |
Yin et al., 2013a | 云杉 Picea asperata | - | 0.70 | 9.30 | |
冷杉 Abies faxoniana | - | 0.50 | 4.90 | ||
Yin et al., 2013b | 云杉 Picea asperata | 663.91-414.94 | 0.67-0.39 | 7.99-5.53 | |
Yin et al., 2014 | 北美鹅掌楸 Liriodendron tulipifera 糖枫 Acer saccharum | 9.58 | - | - | |
北美红栎 Quercus rubra 美洲水青冈木 Fagus grandifolia | 17.50 | - | - | ||
Zhang et al., 2016 | 云杉 Picea asperata | 396.76 | - | - | |
Li at al., 2014a | 9年生云杉人工林 9-year-old Picea asperata | 441.86 | 3.20 | 2.75 | |
13年生云杉人工林 13-year-old Picea asperata | 284.88 | 3.66 | 1.01 | ||
31年生云杉人工林 31-year-old Picea asperata | 315.89 | 3.56 | 1.52 | ||
Xiao, 2013 | 云杉幼苗 Picea asperata seedlings | 79.16 | 0.70 | 9.30 | |
冷杉幼苗 Abies faxoniana seedlings | 65.55 | 0.50 | 4.90 | ||
Qiao, 2015 | 云杉 Picea asperata | 570.93 | 0.50 | 4.44 | |
冷杉 Abies faxoniana | 579.71 | 0.51 | 5.52 | ||
Xiong et al., 2015 | 杉木 Cunninghamia lanceolata | 173.68-138.04 | 0.37-0.14 | 1.67-0.46 | |
米槠 Castanopsis carlesi | 92.72-56.16 | 0.34-0.06 | 1.27-0.24 | ||
平均值 Mean | 203.07 | 1.29 | 4.05 | ||
灌木 Shrubs | 本研究 This study | 窄叶鲜卑花 Sibiraea angustata | 26.22 | 0.02 | 0.29 |
Fig. 2 Differences in root exudative carbon (C) input rates in Sibiraea angustata shrubbery among different nitrogen fertilization treatments (mean ± SD, n = 3). A, Root exudative C input rate per root biomass. B, Root exudative C input rate per root length. C, Root exudative C input rate per root surface area. Different lowercase letters indicate significant differences (p < 0.05) among treatments on a given sampling date. Three nitrogen addition levels: N0 (0 g·m-2·a-1), N5 (5 g·m-2·a-1), N10 (10 g·m-2·a-1).
施N N fertilization | 采样日期 Sampling date | 采样日期×施N Sampling date × N fertilization | |
---|---|---|---|
单位根生物量根系分泌物C输入速率 Root exudative C input rates per root biomass | <0.001 | <0.001 | 0.255 |
单位根长根系分泌物C输入速率 Root exudative C input rates per root length | <0.001 | 0.019 | 0.844 |
单位根表面积根系分泌物C输入速率 Root exudative C input rates per root surface area | <0.001 | <0.001 | <0.001 |
Table 2 Summary of repeated measures ANOVA showing the p values for responses of root exudative carbon (C) input rates of Sibiraea angustata shrubbery to nitrogen (N) fertilization and sampling date
施N N fertilization | 采样日期 Sampling date | 采样日期×施N Sampling date × N fertilization | |
---|---|---|---|
单位根生物量根系分泌物C输入速率 Root exudative C input rates per root biomass | <0.001 | <0.001 | 0.255 |
单位根长根系分泌物C输入速率 Root exudative C input rates per root length | <0.001 | 0.019 | 0.844 |
单位根表面积根系分泌物C输入速率 Root exudative C input rates per root surface area | <0.001 | <0.001 | <0.001 |
Fig. 3 Correlation analysis between root exudative carbon (C) input rate per root biomass and soil temperature at 5 cm depth. Three nitrogen addition levels: N0 (0 g·m-2·a-1), N5 (5 g·m-2·a-1), N10 (10 g·m-2·a-1).
Fig. 4 Changes in fine root biomass in Sibiraea angustata shrubbery under different nitrogen fertilization treatments (mean ± SD, n = 3). Different lowercase letters indicate significant differences among treatments on a given sampling date (p < 0.05). Three nitrogen addition levels: N0 (0 g·m-2·a-1), N5 (5 g·m-2·a-1), N10 (10 g·m-2·a-1).
处理 Treatment | 单位根生物量根系分泌物C输入速率 Root exudative C input rate per root biomass (mg·g-1·d-1) | 细根生物量 Fine root biomass (g·m-2) | 根系分泌物C通量 C flux of root exudates (g·m-2·a-1) |
---|---|---|---|
N0 | 0.68 ± 0.02a | 169.17 ± 47.83a | 16.89 ± 0.31a |
N5 | 0.57 ± 0.04b | 129.65 ± 81.71b | 9.58 ± 0.24b |
N10 | 0.36 ± 0.02c | 111.93 ± 58.49c | 5.81 ± 0.12c |
Table 3 Root exudative carbon (C) flux in Sibiraea angustata shrubbery under different nitrogen (N) fertilization treatments (mean ± SD, n = 3)
处理 Treatment | 单位根生物量根系分泌物C输入速率 Root exudative C input rate per root biomass (mg·g-1·d-1) | 细根生物量 Fine root biomass (g·m-2) | 根系分泌物C通量 C flux of root exudates (g·m-2·a-1) |
---|---|---|---|
N0 | 0.68 ± 0.02a | 169.17 ± 47.83a | 16.89 ± 0.31a |
N5 | 0.57 ± 0.04b | 129.65 ± 81.71b | 9.58 ± 0.24b |
N10 | 0.36 ± 0.02c | 111.93 ± 58.49c | 5.81 ± 0.12c |
处理 Treatment | 2015-06 | 2015-08 | 2015-10 | ||||
---|---|---|---|---|---|---|---|
NO3--N (mg·kg-1) | NH4+-N (mg·kg-1) | NO3--N (mg·kg-1) | NH4+-N (mg·kg-1) | NO3--N (mg·kg-1) | NH4+-N (mg·kg-1) | ||
N0 | 20.88 ± 0.91a | 7.44 ± 0.16a | 23.92 ± 0.23a | 8.66 ± 0.54a | 25.88 ± 0.83a | 7.63 ± 0.28a | |
N5 | 22.19 ± 0.71a | 12.57 ± 0.64b | 24.51 ± 0.31a | 13.21 ± 0.27b | 26.21 ± 0.24a | 12.42 ± 0.59b | |
N10 | 30.38 ± 0.71b | 14.29 ± 0.85b | 28.98 ± 0.65b | 16.18 ± 0.56b | 29.38 ± 0.17b | 13.94 ± 0.71b |
Table 4 Changes in nitrate nitrogen and ammonium nitrogen under different nitrogen fertilization treatments (mean ± SD, n = 3)
处理 Treatment | 2015-06 | 2015-08 | 2015-10 | ||||
---|---|---|---|---|---|---|---|
NO3--N (mg·kg-1) | NH4+-N (mg·kg-1) | NO3--N (mg·kg-1) | NH4+-N (mg·kg-1) | NO3--N (mg·kg-1) | NH4+-N (mg·kg-1) | ||
N0 | 20.88 ± 0.91a | 7.44 ± 0.16a | 23.92 ± 0.23a | 8.66 ± 0.54a | 25.88 ± 0.83a | 7.63 ± 0.28a | |
N5 | 22.19 ± 0.71a | 12.57 ± 0.64b | 24.51 ± 0.31a | 13.21 ± 0.27b | 26.21 ± 0.24a | 12.42 ± 0.59b | |
N10 | 30.38 ± 0.71b | 14.29 ± 0.85b | 28.98 ± 0.65b | 16.18 ± 0.56b | 29.38 ± 0.17b | 13.94 ± 0.71b |
Fig. 5 Changes in total soil microbial phospholipid fatty acid (PLFAs) under different nitrogen fertilization treatments (mean ± SD, n = 3). Different lowercase letters indicate significant differences (p < 0.05) among treatments on a given sampling date. Three nitrogen addition levels: N0 (0 g·m-2·a-1), N5 (5 g·m-2·a-1), N10 (10 g·m-2·a-1).
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