Chin J Plant Ecol ›› 2014, Vol. 38 ›› Issue (3): 238-248.DOI: 10.3724/SP.J.1258.2014.00021
Special Issue: 土壤呼吸
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LI Yue1,3, LIU Ying-Hui2,3,*(), SHEN Wei-Jun4, XU Xia3, TIAN Yu-Qiang3
Received:
2013-07-01
Accepted:
2014-01-07
Online:
2014-07-01
Published:
2014-02-27
Contact:
LIU Ying-Hui
LI Yue, LIU Ying-Hui, SHEN Wei-Jun, XU Xia, TIAN Yu-Qiang. Responses of soil heterotrophic respiration to changes in soil temperature and moisture in a Stipa krylovii grassland in Nei Mongol[J]. Chin J Plant Ecol, 2014, 38(3): 238-248.
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URL: https://www.plant-ecology.com/EN/10.3724/SP.J.1258.2014.00021
编号 Number | 模型 Model | 形式 Form | 参考文献 Reference |
---|---|---|---|
1 | lnRh = y0+ aT + bM + cTM | 加和 Additive | Wang et al., 2003; Webster et al., 2008 |
2 | lnRh = y0+ aT + bM + cTM + dT2 + eM2 | 加和 Additive | Li et al., 2000; Webster et al., 2008 |
3 | Rh = aebTMc | 乘积 Multiple | Yang et al., 2006; Webster et al., 2008 |
4 | Rh=aebT (cM2 + dM) | 乘积 Multiple | Yan et al., 2010 |
Table 1 Soil heterotrophic respiration (Rh) models responding to soil temperature and moisture
编号 Number | 模型 Model | 形式 Form | 参考文献 Reference |
---|---|---|---|
1 | lnRh = y0+ aT + bM + cTM | 加和 Additive | Wang et al., 2003; Webster et al., 2008 |
2 | lnRh = y0+ aT + bM + cTM + dT2 + eM2 | 加和 Additive | Li et al., 2000; Webster et al., 2008 |
3 | Rh = aebTMc | 乘积 Multiple | Yang et al., 2006; Webster et al., 2008 |
4 | Rh=aebT (cM2 + dM) | 乘积 Multiple | Yan et al., 2010 |
Fig. 2 Dynamics of soil heterotrophic respiration during incubation (n = 20) . Left, under different temperatures; right, under different moisture levels. Error bars were not presented for the clearness of the data points. WHC, water holding capacity.
Fig. 3 Soil heterotrophic respiration averaged by temperature (mean ± SE, n = 20). Different letters indicate significant differences among treatments (p < 0.05).
使用9-40 ℃温度梯度 Using 9-40 °C temperature level | 使用9-30 ℃温度梯度 Using 9-30 °C temperature level | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
WHC (%) | 公式 Equation | R2 | p | Q10 | 公式 Equation | R2 | p | Q10 | ||
20 | Rh = 12.041e0.017T | 0.36 | 0.007 | 1.19 | Rh = 9.267e0.033T | 0.59 | 0.001 | 1.39 | ||
40 | Rh = 20.907e0.027T | 0.62 | <0.001 | 1.31 | Rh = 15.181e0.047T | 0.86 | <0.001 | 1.60 | ||
60 | Rh = 12.400e0.049T | 0.70 | <0.001 | 1.63 | Rh = 7.688e0.074T | 0.93 | <0.001 | 2.10 | ||
80 | Rh = 6.757e0.071T | 0.83 | <0.001 | 2.03 | Rh = 4.419e0.103T | 0.87 | <0.001 | 2.80 | ||
100 | Rh = 3.470e0.067T | 0.94 | <0.001 | 1.95 | Rh = 2.917e0.078T | 0.93 | <0.001 | 2.18 |
Table 2 Exponential relationship between soil heterotrophic respiration (Rh) and temperature and temperature sensitivity of soil heterotrophic respiration (Q10) values (n = 4)
使用9-40 ℃温度梯度 Using 9-40 °C temperature level | 使用9-30 ℃温度梯度 Using 9-30 °C temperature level | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
WHC (%) | 公式 Equation | R2 | p | Q10 | 公式 Equation | R2 | p | Q10 | ||
20 | Rh = 12.041e0.017T | 0.36 | 0.007 | 1.19 | Rh = 9.267e0.033T | 0.59 | 0.001 | 1.39 | ||
40 | Rh = 20.907e0.027T | 0.62 | <0.001 | 1.31 | Rh = 15.181e0.047T | 0.86 | <0.001 | 1.60 | ||
60 | Rh = 12.400e0.049T | 0.70 | <0.001 | 1.63 | Rh = 7.688e0.074T | 0.93 | <0.001 | 2.10 | ||
80 | Rh = 6.757e0.071T | 0.83 | <0.001 | 2.03 | Rh = 4.419e0.103T | 0.87 | <0.001 | 2.80 | ||
100 | Rh = 3.470e0.067T | 0.94 | <0.001 | 1.95 | Rh = 2.917e0.078T | 0.93 | <0.001 | 2.18 |
温度 Temperature (℃) | 公式 Equation | R2 | p | 呼吸最大值所在湿度 Water level where largest respiration occurred |
---|---|---|---|---|
9 | Rh = -0.004M2 + 0.34M + 11.266 | 0.67 | <0.001 | 40% WHC |
14 | Rh = -0.0082M2 + 0.94M - 2.108 | 0.49 | 0.005 | 40% WHC |
22 | Rh = -0.016M2 + 2.049M - 13.262 | 0.51 | 0.003 | 40% WHC |
30 | Rh = -0.024M2 + 3.217M - 35.986 | 0.62 | <0.001 | 80% WHC |
40 | Rh = -0.016M2 + 2.532M - 30.261 | 0.45 | 0.008 | 80% WHC |
Table 3 Quadratic relationship between soil heterotrophic respiration (Rh) and soil moisture (n = 4)
温度 Temperature (℃) | 公式 Equation | R2 | p | 呼吸最大值所在湿度 Water level where largest respiration occurred |
---|---|---|---|---|
9 | Rh = -0.004M2 + 0.34M + 11.266 | 0.67 | <0.001 | 40% WHC |
14 | Rh = -0.0082M2 + 0.94M - 2.108 | 0.49 | 0.005 | 40% WHC |
22 | Rh = -0.016M2 + 2.049M - 13.262 | 0.51 | 0.003 | 40% WHC |
30 | Rh = -0.024M2 + 3.217M - 35.986 | 0.62 | <0.001 | 80% WHC |
40 | Rh = -0.016M2 + 2.532M - 30.261 | 0.45 | 0.008 | 80% WHC |
因变量 Dependent variable | 源 Source | df | F | p |
---|---|---|---|---|
Rh | 校正模型 Corrected model | 24 | 65.642 | <0.001 |
截距 Intercept | 1 | 3 396.826 | <0.001 | |
土壤温度 Soil temperature (T) | 4 | 187.527 | <0.001 | |
土壤湿度 Soil moisture (M) | 4 | 119.112 | <0.001 | |
土壤温度 × 土壤湿度 T × M | 16 | 21.804 | <0.001 | |
误差 Error | 75 |
Table 4 Two-way ANOVA for interactive effects of soil temperature and moisture on soil heterotrophic respiration (Rh) (n = 4)
因变量 Dependent variable | 源 Source | df | F | p |
---|---|---|---|---|
Rh | 校正模型 Corrected model | 24 | 65.642 | <0.001 |
截距 Intercept | 1 | 3 396.826 | <0.001 | |
土壤温度 Soil temperature (T) | 4 | 187.527 | <0.001 | |
土壤湿度 Soil moisture (M) | 4 | 119.112 | <0.001 | |
土壤温度 × 土壤湿度 T × M | 16 | 21.804 | <0.001 | |
误差 Error | 75 |
项目 Item | 模型系数 Model coefficient | R2 | p | 赤池信息量准则 Akaike information criterion | |||||
---|---|---|---|---|---|---|---|---|---|
y0 | a | b | c | d | e | ||||
模型1 Model 1 | 3.328 | 0.002 | -0.018 | NA | NA | 0.001 | 0.55 | <0.001 | 40.875 |
p | <0.001 | 0.941 | 0.036 | NA | NA | 0.027 | |||
模型2 Model 2 | 0.914 | 0.098 | 0.046 | -0.002 | -0.001 | 0.001 | 0.91 | <0.001 | 2.660 |
p | 0.022 | 0.001 | <0.001 | <0.001 | <0.001 | <0.001 | |||
模型3 Model 3 | NA | 4.389 | 0.036 | 0.291 | NA | NA | 0.47 | <0.001 | 221.701 |
p | NA | 0.205 | <0.001 | 0.003 | NA | NA |
Table 5 Coefficients of soil heterotrophic respiration models responding to soil temperature and water content, with good-of-fit indices evaluated for models (n = 4)
项目 Item | 模型系数 Model coefficient | R2 | p | 赤池信息量准则 Akaike information criterion | |||||
---|---|---|---|---|---|---|---|---|---|
y0 | a | b | c | d | e | ||||
模型1 Model 1 | 3.328 | 0.002 | -0.018 | NA | NA | 0.001 | 0.55 | <0.001 | 40.875 |
p | <0.001 | 0.941 | 0.036 | NA | NA | 0.027 | |||
模型2 Model 2 | 0.914 | 0.098 | 0.046 | -0.002 | -0.001 | 0.001 | 0.91 | <0.001 | 2.660 |
p | 0.022 | 0.001 | <0.001 | <0.001 | <0.001 | <0.001 | |||
模型3 Model 3 | NA | 4.389 | 0.036 | 0.291 | NA | NA | 0.47 | <0.001 | 221.701 |
p | NA | 0.205 | <0.001 | 0.003 | NA | NA |
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