Chin J Plan Ecolo ›› 2018, Vol. 42 ›› Issue (8): 850-862.DOI: 10.17521/cjpe.2018.0068
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LI Wei-Jing1,2,CHEN Shi-Ping1,*(),ZHANG Bing-Wei1,3,TAN Xing-Ru1,2,WANG Shan-Shan1,2,YOU Cui-Hai1,2
Received:
2018-03-29
Online:
2018-08-20
Published:
2018-06-01
Contact:
Shi-Ping CHEN
Supported by:
LI Wei-Jing, CHEN Shi-Ping, ZHANG Bing-Wei, TAN Xing-Ru, WANG Shan-Shan, YOU Cui-Hai. Partitioning of soil respiration components and evaluating the mycorrhizal contribution to soil respiration in a semiarid grassland[J]. Chin J Plan Ecolo, 2018, 42(8): 850-862.
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URL: https://www.plant-ecology.com/EN/10.17521/cjpe.2018.0068
Fig. 1 Diagram of the modified mini-trenching method in partitioning soil respiration into its components (The curve denotes mycelium and the short line denotes detritus). The shallow and deep collars are used to determine total soil respiration (SRtot) and its heterotrophic component (SRh). Hyphae collar is used for the determination of soil heterotrophic respiration and hyphae respiration (SRh + SRmy). The difference in soil respiration between the shallow and deep collars is used to represent autotrophic soil respiration (SRa), that between the shallow and hyphae collars is used to represent root respiration (SRr), and that between the hyphae and deep collars is used to represent hyphae respiration (SRmy).
Fig. 2 Hyphae density under different soil respiration collars (mean + SE). Different letters indicate significant differences among treatments (p < 0.05).
Fig. 3 Seasonal variations of soil temperature (Ts), soil water content (SWC) under different soil respiration collars during 2014 (A, C) and average from the year 2014 (B, D)(mean + SE). Different lowercase letters indicate significant differences among treatments (p < 0.05).
Fig. 4 The relationship between soil temperature (Ts) in different soil collars (A, C) and the relationship between soil water content (SWC) in different soil collars (B, D).
Fig. 5 The relationship between soil respiration (SR) and soil temperature (Ts) in different soil respiration collars during 2014-2016. A, B, C, Shallow collar. D, E, F, Deep collar. G, H, I, Hyphae collar.
Fig. 6 The relationship between soil respiration (SR) and soil water content (SWC) in different soil respiration collars during 2014-2016. A, B, C, Shallow collar. D, E, F, Deep collar. G, H, I, Hyphae collar.
年份 Year | 土壤环类型 Collar type | 样本数量 N | 方程 Function | R2 | p |
---|---|---|---|---|---|
2014 | 浅环 Shallow collar | 64 | Y = 0.032e0.098Ts(-0.084SWC2 + 2.70SWC) | 0.82 | < 0.000 1 |
深环 Deep collar | 64 | Y = 0.011e0.110Ts(0.032SWC2 + 1.20SWC) | 0.75 | < 0.000 1 | |
菌丝环 Hyphae collar | 64 | Y = 0.011e0.099Ts(0.082SWC2 + 2.00SWC) | 0.72 | < 0.000 1 | |
2015 | 浅环 Shallow collar | 60 | Y = 0.020e0.109Ts(-0.037SWC2 + 2.90SWC) | 0.87 | < 0.000 1 |
深环 Deep collar | 60 | Y = 0.011e0.108Ts(0.043SWC2 + 1.55SWC) | 0.86 | < 0.000 1 | |
菌丝环 Hyphae collar | 60 | Y = 0.009e0.113Ts(0.045SWC2 + 2.65SWC) | 0.89 | < 0.000 1 | |
2016 | 浅环 Shallow collar | 36 | Y = 0.095e0.053Ts(-0.090SWC2 + 2.40SWC) | 0.44 | < 0.000 1 |
深环 Deep collar | 36 | Y = 0.032e0.049Ts(-0.064SWC2 + 2.90SWC) | 0.37 | < 0.000 1 | |
菌丝环 Hyphae collar | 36 | Y = 0.061e0.043Ts(-0.043SWC2 + 2.30SWC) | 0.28 | < 0.000 1 |
Table 1 Functions and model fit parameters (N, R2 and p-values) between measured soil respiration of shallow collar (SRsc), deep collar (SRdc), and hyphae collar (SRhc) with soil temperature (Ts) and soil water content (SWC)
年份 Year | 土壤环类型 Collar type | 样本数量 N | 方程 Function | R2 | p |
---|---|---|---|---|---|
2014 | 浅环 Shallow collar | 64 | Y = 0.032e0.098Ts(-0.084SWC2 + 2.70SWC) | 0.82 | < 0.000 1 |
深环 Deep collar | 64 | Y = 0.011e0.110Ts(0.032SWC2 + 1.20SWC) | 0.75 | < 0.000 1 | |
菌丝环 Hyphae collar | 64 | Y = 0.011e0.099Ts(0.082SWC2 + 2.00SWC) | 0.72 | < 0.000 1 | |
2015 | 浅环 Shallow collar | 60 | Y = 0.020e0.109Ts(-0.037SWC2 + 2.90SWC) | 0.87 | < 0.000 1 |
深环 Deep collar | 60 | Y = 0.011e0.108Ts(0.043SWC2 + 1.55SWC) | 0.86 | < 0.000 1 | |
菌丝环 Hyphae collar | 60 | Y = 0.009e0.113Ts(0.045SWC2 + 2.65SWC) | 0.89 | < 0.000 1 | |
2016 | 浅环 Shallow collar | 36 | Y = 0.095e0.053Ts(-0.090SWC2 + 2.40SWC) | 0.44 | < 0.000 1 |
深环 Deep collar | 36 | Y = 0.032e0.049Ts(-0.064SWC2 + 2.90SWC) | 0.37 | < 0.000 1 | |
菌丝环 Hyphae collar | 36 | Y = 0.061e0.043Ts(-0.043SWC2 + 2.30SWC) | 0.28 | < 0.000 1 |
Fig. 7 The seasonal dynamics of the observed value of soil respiration and the revised value of deep collar and hyphae collar (mean ± SE). SRdc-observed, SRdc-revised, SRhc-observed and SRhc-revised represent the observed value of soil respiration in the deep collar, the revised value of soil respiration in the deep collar, the observed value of soil respiration in the hyphae collar, and the revised value of soil respiration in the hyphae collar, respectively.
Fig. 8 Seasonal variations of different soil respiration components during growing seasons of 2014-2016 (mean ± SE). SRh, SRa, SRmy and SRr represent heterotrophic respiration, autotrophic respiration, mycorrhiza respiration and root respiration, respectively.
Fig. 9 Interannual variations of soil respiration (SR) and its components, the contribution of soil respiration components to total soil respiration and the contribution of SRmy and SRr to SRa during 2014-2016 and averages from May to August of the 3 years (mean ± SE). SRh, SRa, SRmy, SRr and SRtot represent heterotrophic respiration, autotrophic respiration, mycorrhiza respiration, root respiration and total soil respiration, respectively.
生态系统 Ecosystems | 地点 Location | 优势物种 Dominant species | 方法 Methods | 菌根呼吸贡献率 Mycorrhizal contribution (%) | 文献来源 Sources |
---|---|---|---|---|---|
森林 Forest | 德国东南部 Southeastern Germany | 欧洲云杉 Picea abies | 内生长网孔袋法 In growth mesh bags (2 mm and 45 μm) | 18%-44% | Neumann & Matzner, 2014 |
英国约克南部 South of York, UK 53.91° N, 1.00° W | 美国黑松 Pinus contortaDouglas ex Loudon 垂枝桦 Betula pendula | 菌根网孔环设计 Mycorrhizal mesh collar design (41 μm) | 25% | Heinemeyer et al., 2007 | |
美国 宾夕法尼亚州 Pennsylvania, USA | 西黄松 Pinus ponderosa | 根模拟系统和同位素方法 Root-mycocosm and isotopic method | 19.4% | Rygiewicz & Andersen, 1994 | |
巴拿马共和国 The Republic of Panama | Pseudobombax septenatum | 内生长模拟系统 In-growth mesocosms | (14 ± 6)% | Nottingham et al., 2010 | |
德国中部 Central Germany 51.08° N, 10.45° E | Fagus sylvatica 欧洲云杉 Picea abies | 应用不同规格孔径的 尼龙网袋土钻法 Soil cores using nylon mesh bags of 35 and 1 μm pore size | 3%, 8% | Moyano et al., 2008 | |
美国密歇根霍顿 Houghton, Michigan, USA 47.12° N, 88.55° W | 北美乔松 Pinus strobus, Quercus rubra | PVC环和模型 PVC collar and models | 28% | Lilleskov, 2017 | |
草原 Grassland | 匈牙利 Hungary 46.69° N, 19.60° E | Festuca pseudovina, Carex stenophylla, 狗牙根 Cynodon dactylon | 物理分离(40 μm不锈钢网)和 同位素方法 Physical separation: (40 μm inox mesh) and isotopic method | (13 ± 8)% | Balogh et al., 2016 |
英国约克郡北部 North Yorkshire, UK 54.00° N, 1.18° W | 绒毛草 Holcus lanatus | 网孔环嵌插法 Meshcollar insertion (20 μm) | 27% | Heinemeyer et al., 2012 | |
农田 Farmland | 意大利北部 Northern Italy 47.30° N, 11.58° E | Malus domestica | 尼龙膜结合同位素法 Polyester membrane (5 μm and 50 μm) with isotopic method | 11.6% | Tomè et al., 2016 |
德国图林根 Thuringia, Germany 51.10° N, 11.77° E | 大麦 Hordeum vulgare | 尼龙网孔袋法 Nylon mesh bags (1 μm and 35 μm) | 25.3% | Moyano et al., 2007 |
Table 2 Summary of studies on the contribution of mycorrhizal respiration to total soil respiration
生态系统 Ecosystems | 地点 Location | 优势物种 Dominant species | 方法 Methods | 菌根呼吸贡献率 Mycorrhizal contribution (%) | 文献来源 Sources |
---|---|---|---|---|---|
森林 Forest | 德国东南部 Southeastern Germany | 欧洲云杉 Picea abies | 内生长网孔袋法 In growth mesh bags (2 mm and 45 μm) | 18%-44% | Neumann & Matzner, 2014 |
英国约克南部 South of York, UK 53.91° N, 1.00° W | 美国黑松 Pinus contortaDouglas ex Loudon 垂枝桦 Betula pendula | 菌根网孔环设计 Mycorrhizal mesh collar design (41 μm) | 25% | Heinemeyer et al., 2007 | |
美国 宾夕法尼亚州 Pennsylvania, USA | 西黄松 Pinus ponderosa | 根模拟系统和同位素方法 Root-mycocosm and isotopic method | 19.4% | Rygiewicz & Andersen, 1994 | |
巴拿马共和国 The Republic of Panama | Pseudobombax septenatum | 内生长模拟系统 In-growth mesocosms | (14 ± 6)% | Nottingham et al., 2010 | |
德国中部 Central Germany 51.08° N, 10.45° E | Fagus sylvatica 欧洲云杉 Picea abies | 应用不同规格孔径的 尼龙网袋土钻法 Soil cores using nylon mesh bags of 35 and 1 μm pore size | 3%, 8% | Moyano et al., 2008 | |
美国密歇根霍顿 Houghton, Michigan, USA 47.12° N, 88.55° W | 北美乔松 Pinus strobus, Quercus rubra | PVC环和模型 PVC collar and models | 28% | Lilleskov, 2017 | |
草原 Grassland | 匈牙利 Hungary 46.69° N, 19.60° E | Festuca pseudovina, Carex stenophylla, 狗牙根 Cynodon dactylon | 物理分离(40 μm不锈钢网)和 同位素方法 Physical separation: (40 μm inox mesh) and isotopic method | (13 ± 8)% | Balogh et al., 2016 |
英国约克郡北部 North Yorkshire, UK 54.00° N, 1.18° W | 绒毛草 Holcus lanatus | 网孔环嵌插法 Meshcollar insertion (20 μm) | 27% | Heinemeyer et al., 2012 | |
农田 Farmland | 意大利北部 Northern Italy 47.30° N, 11.58° E | Malus domestica | 尼龙膜结合同位素法 Polyester membrane (5 μm and 50 μm) with isotopic method | 11.6% | Tomè et al., 2016 |
德国图林根 Thuringia, Germany 51.10° N, 11.77° E | 大麦 Hordeum vulgare | 尼龙网孔袋法 Nylon mesh bags (1 μm and 35 μm) | 25.3% | Moyano et al., 2007 |
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