Chin J Plant Ecol ›› 2005, Vol. 29 ›› Issue (4): 543-549.DOI: 10.17521/cjpe.2005.0073
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LI De-Jun1,2,3, MO Jiang-Ming1,*(), FANG Yun-Ting1, LI Zhi-An1
Received:
2004-01-05
Accepted:
2004-12-20
Online:
2005-01-05
Published:
2005-07-31
Contact:
MO Jiang-Ming
About author:
* E-mail: mojm@scib.ac.cnLI De-Jun, MO Jiang-Ming, FANG Yun-Ting, LI Zhi-An. EFFECTS OF SIMULATED NITROGEN DEPOSITION ON BIOMASS PRODUCTION AND ALLOCATION IN SCHIMA SUPERBA AND CRYPTOCARYA CONCINNA SEEDLINGS IN SUBTROPICAL CHINA[J]. Chin J Plant Ecol, 2005, 29(4): 543-549.
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Fig.1 Effects of nitrogen deposition on stem base diameter of the subtropical tree seedlings CK: 0 T5:5 g N·m-2·a-1 T10: 10 g N·m-2·a-1 T15: 15 g N·m-2·a-1 T30: 30 g N·m-2·a-1
全株生物量 WPW(g) | 叶重比 LWR (g·g-1) | 枝重比 SBWR (g·g-1) | 根重比 RWR (g·g-1) | 根/冠 R/S | ||||
---|---|---|---|---|---|---|---|---|
荷木 Schima superba | ||||||||
CK | 7.07(0.31)b | 0.30(0.02)a | 0.37(0.01)c | 0.34(0.02)a | 0.53(0.06)a | |||
T5 | 5.01(0.60)b | 0.24(0.04)ab | 0.49(0.05)ab | 0.27(0.01)b | 0.40(0.02)b | |||
T10 | 11.85(1.39)a | 0.29(0.03)a | 0.41(0.01)bc | 0.30(0.02)ab | 0.42(0.04)ab | |||
T15 | 6.66(1.24)b | 0.31(0.02)a | 0.46(0.03)ab | 0.23(0.01)b | 0.31(0.02)b | |||
T30 | 4.25(0.27)b | 0.21(0.01)b | 0.51(0.02)a | 0.28(0.02)ab | 0.41(0.04)ab | |||
黄果厚壳桂 Cryptocarya concinna | ||||||||
CK | 4.59(0.73)b | 0.31(0.04) | 0.39(0.02)ab | 0.30(0.03)a | 0.44(0.05)a | |||
T5 | 6.51(1.22)ab | 0.36(0.03) | 0.36(0.02)b | 0.28(0.02)ab | 0.38(0.05)a | |||
T10 | 6.30(1.05)b | 0.34(0.01) | 0.42(0.01)a | 0.24(0.01)bc | 0.32(0.02)b | |||
T15 | 9.62(2.04)a | 0.36(0.01) | 0.43(0.02)a | 0.21(0.02)c | 0.29(0.02)b | |||
T30 | 3.92(1.09)b | 0.30(0.01) | 0.44(0.01)a | 0.26(0.02)abc | 0.36(0.02)ab |
Table 1 Effects of N deposition on biomass and its allocation among leaves, stem and branches and root
全株生物量 WPW(g) | 叶重比 LWR (g·g-1) | 枝重比 SBWR (g·g-1) | 根重比 RWR (g·g-1) | 根/冠 R/S | ||||
---|---|---|---|---|---|---|---|---|
荷木 Schima superba | ||||||||
CK | 7.07(0.31)b | 0.30(0.02)a | 0.37(0.01)c | 0.34(0.02)a | 0.53(0.06)a | |||
T5 | 5.01(0.60)b | 0.24(0.04)ab | 0.49(0.05)ab | 0.27(0.01)b | 0.40(0.02)b | |||
T10 | 11.85(1.39)a | 0.29(0.03)a | 0.41(0.01)bc | 0.30(0.02)ab | 0.42(0.04)ab | |||
T15 | 6.66(1.24)b | 0.31(0.02)a | 0.46(0.03)ab | 0.23(0.01)b | 0.31(0.02)b | |||
T30 | 4.25(0.27)b | 0.21(0.01)b | 0.51(0.02)a | 0.28(0.02)ab | 0.41(0.04)ab | |||
黄果厚壳桂 Cryptocarya concinna | ||||||||
CK | 4.59(0.73)b | 0.31(0.04) | 0.39(0.02)ab | 0.30(0.03)a | 0.44(0.05)a | |||
T5 | 6.51(1.22)ab | 0.36(0.03) | 0.36(0.02)b | 0.28(0.02)ab | 0.38(0.05)a | |||
T10 | 6.30(1.05)b | 0.34(0.01) | 0.42(0.01)a | 0.24(0.01)bc | 0.32(0.02)b | |||
T15 | 9.62(2.04)a | 0.36(0.01) | 0.43(0.02)a | 0.21(0.02)c | 0.29(0.02)b | |||
T30 | 3.92(1.09)b | 0.30(0.01) | 0.44(0.01)a | 0.26(0.02)abc | 0.36(0.02)ab |
侧根最大长度 Maximum length of lateral roots (cm) | 主根长度 Taproot length (cm) | |
---|---|---|
荷木 Schima superba | ||
CK | 13.99(1.25) | 6.37(0.34)b |
T5 | 10.68(2.28) | 6.47(1.33)b |
T10 | 16.08(5.88) | 10.70(3.39)a |
T15 | 11.00(1.67) | 6.03(0.35)b |
T30 | 11.10(1.89) | 7.49(0.04)ab |
黄果厚壳桂 Cryptocarya concinna | ||
CK | 21.07(2.26)a | 14.24(1.78) |
T5 | 17.29(0.62)ab | 13.11(1.60) |
T10 | 14.20(1.89)bc | 12.11(1.89) |
T15 | 12.83(0.48)bc | 12.04(0.79) |
T30 | 10.68(2.83)c | 10.62(2.88) |
Table 2 Length of taproots and lateral roots
侧根最大长度 Maximum length of lateral roots (cm) | 主根长度 Taproot length (cm) | |
---|---|---|
荷木 Schima superba | ||
CK | 13.99(1.25) | 6.37(0.34)b |
T5 | 10.68(2.28) | 6.47(1.33)b |
T10 | 16.08(5.88) | 10.70(3.39)a |
T15 | 11.00(1.67) | 6.03(0.35)b |
T30 | 11.10(1.89) | 7.49(0.04)ab |
黄果厚壳桂 Cryptocarya concinna | ||
CK | 21.07(2.26)a | 14.24(1.78) |
T5 | 17.29(0.62)ab | 13.11(1.60) |
T10 | 14.20(1.89)bc | 12.11(1.89) |
T15 | 12.83(0.48)bc | 12.04(0.79) |
T30 | 10.68(2.83)c | 10.62(2.88) |
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