Chin J Plan Ecolo ›› 2015, Vol. 39 ›› Issue (9): 924-931.DOI: 10.17521/cjpe.2015.0089
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TANG Hai-Ping*(), XUE Hai-Li, FANG Fei
Received:
2015-03-24
Accepted:
2015-08-13
Online:
2015-09-03
Published:
2015-09-23
Contact:
Hai-Ping TANG
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# Co-first authors
TANG Hai-Ping,XUE Hai-Li,FANG Fei. A comparison of measured and calculated net community CO2 exchange: Scaling from leaves to communities[J]. Chin J Plan Ecolo, 2015, 39(9): 924-931.
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亚小区 Sub plot | Pn (μmol CO2·m-2·s-1) | 叶片数 No. of leaves | 平均叶面积 Average leaf area (cm2) | 健康叶片比例 Percentage of healthy leaves | 叶片接受有效光照比例 Percentage of received effective light by leaf | Pc (μmol CO2·m-2·s-1) | Pc / Pn (%) |
---|---|---|---|---|---|---|---|
亚小区1 Sub plot 1 | 15.025b | 650 | 3.113 | 0.4 | 0.7 | 3.41b | 22.7 |
亚小区2 Sub plot 2 | 7.854a | 580 | 2.477 | 0.5 | 0.7 | 1.58a | 20.1 |
亚小区3 Sub plot 3 | 14.536b | 740 | 3.081 | 0.6 | 0.7 | 5.57c | 38.3 |
平均 Average | 12.472 | 656 | 2.890 | 0.5 | 0.7 | 3.52 | 27.0 |
Table 1 The comparison of leaf net photosynthetic rate (Pn) and accumulated leaf net photosynthetic rate (Pc) of Medicago sativa ‘Aohan’
亚小区 Sub plot | Pn (μmol CO2·m-2·s-1) | 叶片数 No. of leaves | 平均叶面积 Average leaf area (cm2) | 健康叶片比例 Percentage of healthy leaves | 叶片接受有效光照比例 Percentage of received effective light by leaf | Pc (μmol CO2·m-2·s-1) | Pc / Pn (%) |
---|---|---|---|---|---|---|---|
亚小区1 Sub plot 1 | 15.025b | 650 | 3.113 | 0.4 | 0.7 | 3.41b | 22.7 |
亚小区2 Sub plot 2 | 7.854a | 580 | 2.477 | 0.5 | 0.7 | 1.58a | 20.1 |
亚小区3 Sub plot 3 | 14.536b | 740 | 3.081 | 0.6 | 0.7 | 5.57c | 38.3 |
平均 Average | 12.472 | 656 | 2.890 | 0.5 | 0.7 | 3.52 | 27.0 |
亚小区 Sub plot | Pc (μmol CO2·m-2·s-1) | NCE (μmol CO2·m-2·s-1) | 生态系统净气体交换速率 Net ecosystem CO2 exchange (NEE, μmol CO2·m-2·s-1) | 生态系统呼吸速率 Ecosystem respiration rate (Reco, μmol CO2·m-2·s-1) | 群落呼吸速率 Community respiration rate (Rc, μmol CO2·m-2·s-1) | NEE/Pn (%) | Pc/NEE |
---|---|---|---|---|---|---|---|
亚小区1 Sub plot 1 | 3.41 | 3.38 | 1.07 | 3.74 | 1.40 | 7.1 | 3.2 |
亚小区2 Sub plot 2 | 1.58 | 1.48 | 0.98 | 0.81 | 0.21 | 12.5 | 1.6 |
亚小区3 Sub plot 3 | 5.57 | 5.82 | 2.38 | 5.56 | 2.37 | 16.4 | 2.3 |
平均 Average | 3.52 | 3.56 | 1.48 | 3.37 | 1.33 | 12.0 | 2.4 |
Table 2 The comparison of measured net community CO2 exchange (NCE) and accumulated leaf net photosynthetic rate (Pc) of Medicago sativa ‘Aohan’
亚小区 Sub plot | Pc (μmol CO2·m-2·s-1) | NCE (μmol CO2·m-2·s-1) | 生态系统净气体交换速率 Net ecosystem CO2 exchange (NEE, μmol CO2·m-2·s-1) | 生态系统呼吸速率 Ecosystem respiration rate (Reco, μmol CO2·m-2·s-1) | 群落呼吸速率 Community respiration rate (Rc, μmol CO2·m-2·s-1) | NEE/Pn (%) | Pc/NEE |
---|---|---|---|---|---|---|---|
亚小区1 Sub plot 1 | 3.41 | 3.38 | 1.07 | 3.74 | 1.40 | 7.1 | 3.2 |
亚小区2 Sub plot 2 | 1.58 | 1.48 | 0.98 | 0.81 | 0.21 | 12.5 | 1.6 |
亚小区3 Sub plot 3 | 5.57 | 5.82 | 2.38 | 5.56 | 2.37 | 16.4 | 2.3 |
平均 Average | 3.52 | 3.56 | 1.48 | 3.37 | 1.33 | 12.0 | 2.4 |
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