Chin J Plant Ecol ›› 2011, Vol. 35 ›› Issue (2): 125-136.DOI: 10.3724/SP.J.1258.2011.00125
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TU Li-Hua1, HU Ting-Xing1,*(), ZHANG Jian1, LI Ren-Hong2, DAI Hong-Zhong1, LUO Shou-Hua1
Received:
2009-12-22
Accepted:
2010-11-16
Online:
2011-12-22
Published:
2011-01-21
Contact:
HU Ting-Xing
TU Li-Hua, HU Ting-Xing, ZHANG Jian, LI Ren-Hong, DAI Hong-Zhong, LUO Shou-Hua. Response of soil organic carbon and nutrients to simulated nitrogen deposition in Pleioblastus amarus plantation, Rainy Area of West China[J]. Chin J Plant Ecol, 2011, 35(2): 125-136.
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URL: https://www.plant-ecology.com/EN/10.3724/SP.J.1258.2011.00125
Fig. 1 Seasonal variations of air temperature (T), precipita- tion (P) and litterfall in Pleioblastus amarus plantation in Rainy Area of West China from November 2007 to October 2009. LL, leaf litter; SL, sheath litter; TL, twig litter.
Fig. 2 Effects of N deposition on soil total organic carbon (TOC), microbial biomass carbon (MBC), extractable dissolved organic carbon (EDOC) and labile carbon (LC) in Pleioblastus amarus plantation in Rainy Area of West China (mean ± SE, n = 3). CK, control (0 g N·m-2·a-1); LN, low-N (5 g N·m-2·a-1); MN, medium-N (15 g N·m-2·a-1); HN, high-N (30 g N·m-2·a-1). Different letters indicate significant difference between treatments at p < 0.05.
处理 Treatment | TOC (mg·g-1) | MBC (mg·g-1) | EDOC (mg·g-1) | LC (mg·g-1) | TN (mg·g-1) | MBN (mg·g-1) | NH4+-N (mg·kg-1) | NO3--N (mg·kg-1) | AP (mg·kg-1) | AK (mg·kg-1) |
---|---|---|---|---|---|---|---|---|---|---|
CK | 9.51 ± 0.15a | 0.19 ± 0.01a | 0.13 ± 0.01a | 0.35 ± 0.01a | 0.79 ± 0.01a | 0.024 ± 0.001a | 18.13 ± 0.35a | 1.70 ± 0.25a | 5.57 ± 0.07a | 53.03 ± 2.12a |
LN | 9.82 ± 0.07b | 0.22 ± 0.01a | 0.12 ± 0.00a | 0.35 ± 0.00a | 0.82 ± 0.01bc | 0.027 ± 0.001ab | 18.56 ± 0.52a | 1.63 ± 0.09a | 9.46 ± 0.56c | 55.47 ± 0.73a |
MN | 9.42 ± 0.11c | 0.21 ± 0.01a | 0.13 ± 0.00a | 0.33 ± 0.01b | 0.80 ± 0.01ab | 0.028 ± 0.001b | 19.54 ± 0.74a | 1.54 ± 0.17a | 7.45 ± 0.31b | 53.29 ± 1.69a |
HN | 9.76 ± 0.07b | 0.26 ± 0.02b | 0.13 ± 0.00a | 0.35 ± 0.01a | 0.84 ± 0.02c | 0.031 ± 0.002c | 21.77 ± 1.64b | 1.64 ± 0.15a | 9.77 ± 0.90c | 53.86 ± 1.93a |
月 Month | p < 0.000 1 | p < 0.000 1 | p < 0.000 1 | p < 0.000 1 | p < 0.000 1 | p < 0.000 1 | p < 0.000 1 | p < 0.000 1 | p < 0.000 1 | p < 0.0001 |
月× N处理Month × N treatment | p = 0.131 | p = 0.08 | p < 0.000 1 | p < 0.000 1 | p = 0.008 | p = 0.295 | p = 0.480 | p = 0.547 | p < 0.000 1 | p = 0.063 |
N处理 N treatment | p = 0.004 | p < 0.000 1 | p = 0.854 | p = 0.032 | p = 0.008 | p < 0.002 | p = 0.007 | p = 0.749 | p < 0.000 1 | p = 0.357 |
Table 1 Results of repeated measures ANOVA of each indicator
处理 Treatment | TOC (mg·g-1) | MBC (mg·g-1) | EDOC (mg·g-1) | LC (mg·g-1) | TN (mg·g-1) | MBN (mg·g-1) | NH4+-N (mg·kg-1) | NO3--N (mg·kg-1) | AP (mg·kg-1) | AK (mg·kg-1) |
---|---|---|---|---|---|---|---|---|---|---|
CK | 9.51 ± 0.15a | 0.19 ± 0.01a | 0.13 ± 0.01a | 0.35 ± 0.01a | 0.79 ± 0.01a | 0.024 ± 0.001a | 18.13 ± 0.35a | 1.70 ± 0.25a | 5.57 ± 0.07a | 53.03 ± 2.12a |
LN | 9.82 ± 0.07b | 0.22 ± 0.01a | 0.12 ± 0.00a | 0.35 ± 0.00a | 0.82 ± 0.01bc | 0.027 ± 0.001ab | 18.56 ± 0.52a | 1.63 ± 0.09a | 9.46 ± 0.56c | 55.47 ± 0.73a |
MN | 9.42 ± 0.11c | 0.21 ± 0.01a | 0.13 ± 0.00a | 0.33 ± 0.01b | 0.80 ± 0.01ab | 0.028 ± 0.001b | 19.54 ± 0.74a | 1.54 ± 0.17a | 7.45 ± 0.31b | 53.29 ± 1.69a |
HN | 9.76 ± 0.07b | 0.26 ± 0.02b | 0.13 ± 0.00a | 0.35 ± 0.01a | 0.84 ± 0.02c | 0.031 ± 0.002c | 21.77 ± 1.64b | 1.64 ± 0.15a | 9.77 ± 0.90c | 53.86 ± 1.93a |
月 Month | p < 0.000 1 | p < 0.000 1 | p < 0.000 1 | p < 0.000 1 | p < 0.000 1 | p < 0.000 1 | p < 0.000 1 | p < 0.000 1 | p < 0.000 1 | p < 0.0001 |
月× N处理Month × N treatment | p = 0.131 | p = 0.08 | p < 0.000 1 | p < 0.000 1 | p = 0.008 | p = 0.295 | p = 0.480 | p = 0.547 | p < 0.000 1 | p = 0.063 |
N处理 N treatment | p = 0.004 | p < 0.000 1 | p = 0.854 | p = 0.032 | p = 0.008 | p < 0.002 | p = 0.007 | p = 0.749 | p < 0.000 1 | p = 0.357 |
Fig. 3 Effects of N deposition on soil total nitrogen (TN), microbial biomass nitrogen (MBN), NH4+-N and NO3--N in Pleioblastus amarus plantation in Rainy Area of West China (mean ± SE, n = 3). CK, control (0 g N·m-2·a-1); LN, low-N (5 g N·m-2·a-1); MN, Medium-N (15 g N·m-2·a-1); HN, high-N (30 g N·m-2·a-1). Different letters indicate significant difference between treatments at p < 0.05.
TOC | MBC | EDOC | LC | TN | MBN | NH4+-N | NO3--N | AP | |
---|---|---|---|---|---|---|---|---|---|
MBC | 0.24** | ||||||||
EDOC | 0.29** | ||||||||
LC | 0.27** | 0.28** | |||||||
TN | 0.19* | ||||||||
MBN | 0.26** | 0.88** | 0.25** | 0.25** | |||||
NH4+-N | 0.23** | 0.32** | 0.58** | -0.22** | 0.32** | ||||
NO3--N | 0.51** | 0.36** | 0.70** | 0.49** | 0.27** | ||||
AP | -0.27** | -0.55** | 0.40** | -0.69** | -0.38** | ||||
AK | -0.48** | -0.69** | -0.32** | 0.21* | -0.78** | 0.52** | -0.33** | 0.77** |
Table 2 Results of correlation analysis of soil organic carbon and nutrient contents
TOC | MBC | EDOC | LC | TN | MBN | NH4+-N | NO3--N | AP | |
---|---|---|---|---|---|---|---|---|---|
MBC | 0.24** | ||||||||
EDOC | 0.29** | ||||||||
LC | 0.27** | 0.28** | |||||||
TN | 0.19* | ||||||||
MBN | 0.26** | 0.88** | 0.25** | 0.25** | |||||
NH4+-N | 0.23** | 0.32** | 0.58** | -0.22** | 0.32** | ||||
NO3--N | 0.51** | 0.36** | 0.70** | 0.49** | 0.27** | ||||
AP | -0.27** | -0.55** | 0.40** | -0.69** | -0.38** | ||||
AK | -0.48** | -0.69** | -0.32** | 0.21* | -0.78** | 0.52** | -0.33** | 0.77** |
Fig. 5 Effects of N deposition on soil available P (AP) and available K (AK) in Pleioblastus amarus plantation in Rainy Area of West China (mean ± SE, n = 3). CK, control (0 g N·m-2·a-1); LN, low-N (5 g N·m-2·a-1); MN, medium-N (15 g N·m-2·a-1); HN, high-N (30 g N·m-2·a-1). Different letters indicate significant difference between treatments at p < 0.05.
Fig. 6 Relationships between microbial biomass carbon (MBC), microbial biomass nitrogen (MBN) and available phosphorus (AP), available potassium (AK). Values in the figure are combinations of all treatments (n = 144).
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