Chin J Plant Ecol ›› 2010, Vol. 34 ›› Issue (8): 907-914.DOI: 10.3773/j.issn.1005-264x.2010.08.003
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WANG Jing1, ZHAO Meng-Li1,*(), Walter WILLMS2, WANG Zhong-Wu1, HAN Guo-Dong1
Received:
2009-09-02
Accepted:
2010-06-01
Online:
2010-09-02
Published:
2010-09-28
Contact:
ZHAO Meng-Li
WANG Jing, ZHAO Meng-Li, Walter WILLMS, WANG Zhong-Wu, HAN Guo-Dong. Productivity responses of different functional groups to litter addition in typical grassland of Inner Mongolia[J]. Chin J Plant Ecol, 2010, 34(8): 907-914.
Fig. 1 Aboveground biomass under different litter addition treatments from 2003 to 2007. C, control; M, medium treatment; H, heavy treatment. Different letters in the figure indicate the significant difference at p < 0.05 level.
作用因素 Factor | 地上生物量 Aboveground biomass | 灌木和小半灌木 SS | 多年生丛生型禾草 PB | 多年生杂类草 PF | 多年生根茎型禾草 PR | 一二年生草本 AB |
---|---|---|---|---|---|---|
年 Year① | 32.69*** | 1.60NS | 17.39*** | 7.45*** | 17.85*** | 33.20*** |
处理 Treatment② | 8.16** | 2.34NS | 2.34NS | 1.35NS | 0.40NS | 2.35NS |
年×处理 Year × treatment③ | 3.22** | 1.88NS | 0.80NS | 1.36NS | 0.84NS | 3.57*** |
Table 1 Results (F values) of one-way ANOVA test on the effects of litter addition intensity, year and their interactions on aboveground biomass of total plant community and different functional groups
作用因素 Factor | 地上生物量 Aboveground biomass | 灌木和小半灌木 SS | 多年生丛生型禾草 PB | 多年生杂类草 PF | 多年生根茎型禾草 PR | 一二年生草本 AB |
---|---|---|---|---|---|---|
年 Year① | 32.69*** | 1.60NS | 17.39*** | 7.45*** | 17.85*** | 33.20*** |
处理 Treatment② | 8.16** | 2.34NS | 2.34NS | 1.35NS | 0.40NS | 2.35NS |
年×处理 Year × treatment③ | 3.22** | 1.88NS | 0.80NS | 1.36NS | 0.84NS | 3.57*** |
功能群 Functional groups | 2003 | 2004 | 2005 | 2006 | 2007 | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
C | M | H | C | M | H | C | M | H | C | M | H | C | M | H | |
AB | 15.67b | 29.37b | 21.10b | 9.18bc | 2.84b | 6.90b | 0.00b | 0.00c | 0.00c | 3.01c | 7.52b | 13.25b | 0.00c | 8.55bc | 2.46c |
PB | 65.34a | 50.26a | 48.23a | 28.32ab | 37.85a | 34.24a | 82.08a | 78.86a | 74.06a | 34.72b | 39.07a | 49.47a | 66.47a | 53.46a | 71.25a |
PF | 18.99b | 20.37b | 10.22bc | 45.16a | 33.89a | 19.41ab | 8.91b | 13.13b | 20.39b | 57.78a | 39.24a | 34.92a | 25.24b | 27.29ab | 20.06b |
PR | 0.00c | 0.00c | 0.00c | 16.79abc | 21.42ab | 31.66a | 10.30b | 6.66bc | 5.55c | 4.01c | 4.50b | 2.36b | 8.30bc | 10.70abc | 6.22c |
SS | 0.00c | 0.00c | 20.45bc | 0.55c | 4.00b | 7.79b | 0.00b | 1.35bc | 0.00c | 0.48c | 9.67b | 0.00b | 0.00c | 0.00c | 0.00c |
Table 2 One-way ANOVA results (F values) of effects on relative biomass of different functional groups in the same year and the same treatment from 2003 to 2007
功能群 Functional groups | 2003 | 2004 | 2005 | 2006 | 2007 | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
C | M | H | C | M | H | C | M | H | C | M | H | C | M | H | |
AB | 15.67b | 29.37b | 21.10b | 9.18bc | 2.84b | 6.90b | 0.00b | 0.00c | 0.00c | 3.01c | 7.52b | 13.25b | 0.00c | 8.55bc | 2.46c |
PB | 65.34a | 50.26a | 48.23a | 28.32ab | 37.85a | 34.24a | 82.08a | 78.86a | 74.06a | 34.72b | 39.07a | 49.47a | 66.47a | 53.46a | 71.25a |
PF | 18.99b | 20.37b | 10.22bc | 45.16a | 33.89a | 19.41ab | 8.91b | 13.13b | 20.39b | 57.78a | 39.24a | 34.92a | 25.24b | 27.29ab | 20.06b |
PR | 0.00c | 0.00c | 0.00c | 16.79abc | 21.42ab | 31.66a | 10.30b | 6.66bc | 5.55c | 4.01c | 4.50b | 2.36b | 8.30bc | 10.70abc | 6.22c |
SS | 0.00c | 0.00c | 20.45bc | 0.55c | 4.00b | 7.79b | 0.00b | 1.35bc | 0.00c | 0.48c | 9.67b | 0.00b | 0.00c | 0.00c | 0.00c |
Fig. 4 Principal component analysis (PCA) of relative biomass of different functional groups in different treatments. C, M and H are the same as in Fig. 1. AB, PB, PF, PR and SS are the same as in Table 1.
Fig. 5 Correlation analysis between perennial bunch grass and perennial forbs in different litter addition treatments. C, M and H are the same as in Fig. 1.
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