Chin J Plant Ecol ›› 2013, Vol. 37 ›› Issue (12): 1080-1090.DOI: 10.3724/SP.J.1258.2013.00111
Special Issue: 青藏高原植物生态学:群落生态学
• Research Articles • Previous Articles Next Articles
LIU Rui-Long, YANG Wan-Qin, TAN Bo, WANG Wen-Jun, NI Xiang-Yin, WU Fu-Zhong*()
Received:
2013-07-24
Accepted:
2013-09-30
Online:
2013-07-24
Published:
2013-12-04
Contact:
WU Fu-Zhong
LIU Rui-Long, YANG Wan-Qin, TAN Bo, WANG Wen-Jun, NI Xiang-Yin, WU Fu-Zhong. Effects of soil fauna on N and P dynamics at different stages during the first year of litter decomposition in subalpine and alpine forests of western Sichuan[J]. Chin J Plant Ecol, 2013, 37(12): 1080-1090.
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URL: https://www.plant-ecology.com/EN/10.3724/SP.J.1258.2013.00111
物种 Species | C (g·kg-1) | N (g·kg-1) | P (g·kg-1) | C/N | C/P | N/P |
---|---|---|---|---|---|---|
康定柳 Salix paraplesia | 379.81 ± 23.28a | 12.35 ± 0.87a | 1.13 ± 0.08a | 30.50 ± 1.24a | 334.05 ± 10.60a | 10.96 ± 0.25a |
方枝柏 Sabina saltuaria | 517.69 ± 20.31b | 10.20 ± 0.71b | 1.35 ± 0.09b | 50.84 ± 2.48b | 379.15 ± 6.12b | 7.47 ± 0.31b |
红桦 Betula albosinensis | 484.27 ± 17.00c | 10.41 ± 0.79b | 0.82 ± 0.08c | 45.93 ± 1.85c | 588.05 ± 36.12c | 12.80 ± 0.56c |
岷江冷杉 Abies fargesii var. faxoniana | 505.85 ± 30.64b | 11.43 ± 1.11a | 1.71 ± 0.11d | 44.25 ± 2.40c | 298.51 ± 9.84d | 6.75 ± 0.23d |
Table 1 Initial quality of leaf litter in Salix paraplesia, Sabina saltuaria, Betula albosinensis and Abies fargesii var. faxoniana in subalpine and alpine forests of western Sichuan (mean ± SD, n = 5)
物种 Species | C (g·kg-1) | N (g·kg-1) | P (g·kg-1) | C/N | C/P | N/P |
---|---|---|---|---|---|---|
康定柳 Salix paraplesia | 379.81 ± 23.28a | 12.35 ± 0.87a | 1.13 ± 0.08a | 30.50 ± 1.24a | 334.05 ± 10.60a | 10.96 ± 0.25a |
方枝柏 Sabina saltuaria | 517.69 ± 20.31b | 10.20 ± 0.71b | 1.35 ± 0.09b | 50.84 ± 2.48b | 379.15 ± 6.12b | 7.47 ± 0.31b |
红桦 Betula albosinensis | 484.27 ± 17.00c | 10.41 ± 0.79b | 0.82 ± 0.08c | 45.93 ± 1.85c | 588.05 ± 36.12c | 12.80 ± 0.56c |
岷江冷杉 Abies fargesii var. faxoniana | 505.85 ± 30.64b | 11.43 ± 1.11a | 1.71 ± 0.11d | 44.25 ± 2.40c | 298.51 ± 9.84d | 6.75 ± 0.23d |
Fig. 1 Temporal variations of temperature in litterbags in the subalpine and alpine forests in western Sichuan from November 2011 through October 2012.
冻融初期 Onset of freezing period | 冻结期 Deep freezing period | 融化期 Thawing stage | 生长季节初期Early growing season | 生长季节中期Mid-growing season | 生长季节末期Late growing season | ||
---|---|---|---|---|---|---|---|
样地1 Site 1 | 平均温度 Average temperature | -1.43 | -1.42 | 1.90 | 8.28 | 11.64 | 6.87 |
正积温 Positive accumulated temperature | 1.12 | 34.18 | 103.83 | 414.11 | 815.10 | 446.64 | |
负积温 Negative accumulated temperature | -51.21 | -135.04 | -6.86 | 0.00 | 0.00 | 0.00 | |
样地2 Site 2 | 平均温度 Average temperature | -2.60 | -5.39 | 2.58 | 8.88 | 15.14 | 7.75 |
正积温 Positive accumulated temperature | 4.76 | 1.05 | 150.41 | 444.00 | 1 059.82 | 503.87 | |
负积温 Negative accumulated temperature | -95.60 | -383.49 | -18.76 | 0.00 | 0.00 | 0.00 |
Table 2 Characteristics of temperature in litterbags during litter decomposition in subalpine and alpine forests of western Sichuan (℃)
冻融初期 Onset of freezing period | 冻结期 Deep freezing period | 融化期 Thawing stage | 生长季节初期Early growing season | 生长季节中期Mid-growing season | 生长季节末期Late growing season | ||
---|---|---|---|---|---|---|---|
样地1 Site 1 | 平均温度 Average temperature | -1.43 | -1.42 | 1.90 | 8.28 | 11.64 | 6.87 |
正积温 Positive accumulated temperature | 1.12 | 34.18 | 103.83 | 414.11 | 815.10 | 446.64 | |
负积温 Negative accumulated temperature | -51.21 | -135.04 | -6.86 | 0.00 | 0.00 | 0.00 | |
样地2 Site 2 | 平均温度 Average temperature | -2.60 | -5.39 | 2.58 | 8.88 | 15.14 | 7.75 |
正积温 Positive accumulated temperature | 4.76 | 1.05 | 150.41 | 444.00 | 1 059.82 | 503.87 | |
负积温 Negative accumulated temperature | -95.60 | -383.49 | -18.76 | 0.00 | 0.00 | 0.00 |
Fig. 2 Mass remaining (%) during leaf litter decomposition in Salix paraplesia, Sabina saltuaria, Betula albosinensis and Abies fargesii var. faxoniana in subalpine and alpine forests of western Sichuan. * indicate significant difference between litterbags of two different mesh sizes for the same species at the same stage (p < 0.05).
Fig. 3 Dynamics of N and P concentrations in decomposing leaf litter of Salix paraplesia, Sabina saltuaria, Betula albosinensis and Abies fargesii var. faxoniana in subalpine and alpine forests of western Sichuan. * indicate significant difference between litterbags of two different mesh sizes for the same species at the same stage (p < 0.05).
Fig. 4 N and P remaining in decomposing leaf litter of Salix paraplesia, Sabina saltuaria, Betula albosinensis and Abies fargesii var. faxoniana in subalpine and alpine forests of western Sichuan. * indicate significant difference between litterbags of two different mesh sizes for the same species at the same stage (p < 0.05).
物种 Species | 冻融初期 Onset of freezing period | 冻结期 Deep freezing period | 融化期 Thawing stage | 生长季节初期 Early growing season | 生长季节中期Mid-growing season | 生长季节末期Late growing season | |
---|---|---|---|---|---|---|---|
个体密度 Density of individuals | 康定柳 Salix paraplesia | 3.00 ± 0.67a | 1.36 ± 0.96a | 3.17 ± 0.92a | 10.84 ± 1.08b | 18.02 ± 2.66c | 13.94 ± 2.00b |
方枝柏 Sabina saltuaria | 2.28 ± 1.26a | 2.17 ± 0.81a | 4.23 ± 1.15ab | 7.35 ± 1.36b | 8.99 ± 1.91b | 7.49 ± 2.47b | |
红桦 Betula albosinensis | 4.23 ± 1.61a | 1.44 ± 0.27b | 2.21 ± 0.64b | 14.52 ± 1.84c | 10.86 ± 2.68d | 43.89 ± 3.48e | |
岷江冷杉 Abies fargesii var. faxoniana | 3.87 ± 1.33a | 1.45 ± 0.58b | 2.76 ± 0.87ab | 20.94 ± 2.61c | 10.95 ± 2.70d | 46.23 ± 4.34e | |
类群数量 Number of groups | 康定柳 Salix paraplesia | 21 ± 2a | 10 ± 1b | 15 ± 1c | 25 ± 2d | 31 ± 4e | 20 ± 1a |
方枝柏 Sabina saltuaria | 18 ± 1a | 10 ± 1b | 22 ± 2c | 29 ± 3d | 34 ± 5e | 25 ± 2c | |
红桦 Betula albosinensis | 21 ± 2a | 12 ± 1b | 14 ± 1b | 18 ± 2c | 24 ± 2d | 25 ± 3d | |
岷江冷杉 Abies fargesii var. faxoniana | 21 ± 2a | 10 ± 1c | 18 ± 1c | 30 ± 3d | 29 ± 2d | 24 ± 1e |
Table 3 Density of individuals and number of groups of soil fauna during litter decomposition in subalpine and alpine forests of western Sichuan (mean ± SD, n = 5)
物种 Species | 冻融初期 Onset of freezing period | 冻结期 Deep freezing period | 融化期 Thawing stage | 生长季节初期 Early growing season | 生长季节中期Mid-growing season | 生长季节末期Late growing season | |
---|---|---|---|---|---|---|---|
个体密度 Density of individuals | 康定柳 Salix paraplesia | 3.00 ± 0.67a | 1.36 ± 0.96a | 3.17 ± 0.92a | 10.84 ± 1.08b | 18.02 ± 2.66c | 13.94 ± 2.00b |
方枝柏 Sabina saltuaria | 2.28 ± 1.26a | 2.17 ± 0.81a | 4.23 ± 1.15ab | 7.35 ± 1.36b | 8.99 ± 1.91b | 7.49 ± 2.47b | |
红桦 Betula albosinensis | 4.23 ± 1.61a | 1.44 ± 0.27b | 2.21 ± 0.64b | 14.52 ± 1.84c | 10.86 ± 2.68d | 43.89 ± 3.48e | |
岷江冷杉 Abies fargesii var. faxoniana | 3.87 ± 1.33a | 1.45 ± 0.58b | 2.76 ± 0.87ab | 20.94 ± 2.61c | 10.95 ± 2.70d | 46.23 ± 4.34e | |
类群数量 Number of groups | 康定柳 Salix paraplesia | 21 ± 2a | 10 ± 1b | 15 ± 1c | 25 ± 2d | 31 ± 4e | 20 ± 1a |
方枝柏 Sabina saltuaria | 18 ± 1a | 10 ± 1b | 22 ± 2c | 29 ± 3d | 34 ± 5e | 25 ± 2c | |
红桦 Betula albosinensis | 21 ± 2a | 12 ± 1b | 14 ± 1b | 18 ± 2c | 24 ± 2d | 25 ± 3d | |
岷江冷杉 Abies fargesii var. faxoniana | 21 ± 2a | 10 ± 1c | 18 ± 1c | 30 ± 3d | 29 ± 2d | 24 ± 1e |
物种 Species | 冻融初期 Onset of freezing period | 冻结期 Deep freezing period | 融化期 Thawing stage | 生长季节初期Early growing season | 生长季节中期Mid-growing season | 生长季节末期Late growing season | 冻融季节Freeze-thaw season | 生长季节Growing season | 整个凋落物分解的第一年 The whole first year of litter decomposition | |
---|---|---|---|---|---|---|---|---|---|---|
土壤动物作用的N释放量 Amount of N released through soil fauna | 康定柳 Salix paraplesia | 9.22 ± 0.37a | 0.03 ± 0.01a | -2.09 ± 0.07a | 0.76 ± 0.08a | 2.50 ± 0.13a | -6.76 ± 0.21a | 7.16 ± 0.36a | -3.50 ± 0.13a | 3.66 ± 0.17a |
方枝柏 Sabina saltuaria | -3.34 ± 0.15b | -1.22 ± 0.08b | -0.04 ± 0.01b | 2.51 ± 0.11b | 4.14 ± 0.17b | 3.69 ± 0.10b | -4.60 ± 0.22b | 10.34 ± 0.38b | 5.74 ± 0.25b | |
红桦 Betula albosinensis | -8.30 ± 0.26c | 4.51 ± 0.15c | 0.21 ± 0.03c | 3.08 ± 0.14c | 0.55 ± 0.04c | 4.50 ± 0.13c | -3.58 ± 0.14c | 8.13 ± 0.22c | 4.55 ± 0.24c | |
岷江冷杉 Abies fargesii var. faxoniana | 1.95 ± 0.11d | 3.42 ± 0.13d | -2.07 ± 0.13a | -2.05 ± 0.09d | -1.29 ± 0.09d | 5.59 ± 0.11d | 3.29 ± 0.12d | 2.26 ± 0.10d | 5.55 ± 0.19d | |
土壤动物作用的P释放量 Amount of P released through soil fauna | 康定柳 Salix paraplesia | 0.37 ± 0.04a | 0.13 ± 0.01a | -0.09 ± 0.02a | -0.81 ± 0.06a | 0.45 ± 0.05a | -0.15 ± 0.03a | 0.43 ± 0.03a | -0.51 ± 0.02a | -0.08 ± 0.01a |
方枝柏 Sabina saltuaria | 0.23 ± 0.01b | -0.07 ± 0.01b | 0.46 ± 0.05b | -0.84 ± 0.05a | -0.28 ± 0.03b | -0.71 ± 0.06b | 0.62 ± 0.03b | -1.83 ± 0.16b | -1.21 ± 0.07b | |
红桦 Betula albosinensis | -0.11 ± 0.01c | 0.06 ± 0.01c | -0.01 ± 0.01c | -0.10 ± 0.01b | 0.56 ± 0.07c | -0.59 ± 0.04c | -0.06 ± 0.01c | -0.13 ± 0.01c | -0.19 ± 0.01c | |
岷江冷杉 Abies fargesii var. faxoniana | 0.81 ± 0.07d | 0.43 ± 0.05d | 0.07 ± 0.01d | -1.58 ± 0.09c | 0.94 ± 0.10d | -1.49 ± 0.14d | 1.31 ± 0.11d | -2.12 ± 0.08d | -0.81 ± 0.03d |
Table 4 The amount of N and P (mg) released through soil fauna during leaf litter decomposition in Salix paraplesia, Sabina saltuaria, Betula albosinensis and Abies fargesii var. faxoniana in subalpine and alpine forests of western Sichuan (mean ± SD, n = 5)
物种 Species | 冻融初期 Onset of freezing period | 冻结期 Deep freezing period | 融化期 Thawing stage | 生长季节初期Early growing season | 生长季节中期Mid-growing season | 生长季节末期Late growing season | 冻融季节Freeze-thaw season | 生长季节Growing season | 整个凋落物分解的第一年 The whole first year of litter decomposition | |
---|---|---|---|---|---|---|---|---|---|---|
土壤动物作用的N释放量 Amount of N released through soil fauna | 康定柳 Salix paraplesia | 9.22 ± 0.37a | 0.03 ± 0.01a | -2.09 ± 0.07a | 0.76 ± 0.08a | 2.50 ± 0.13a | -6.76 ± 0.21a | 7.16 ± 0.36a | -3.50 ± 0.13a | 3.66 ± 0.17a |
方枝柏 Sabina saltuaria | -3.34 ± 0.15b | -1.22 ± 0.08b | -0.04 ± 0.01b | 2.51 ± 0.11b | 4.14 ± 0.17b | 3.69 ± 0.10b | -4.60 ± 0.22b | 10.34 ± 0.38b | 5.74 ± 0.25b | |
红桦 Betula albosinensis | -8.30 ± 0.26c | 4.51 ± 0.15c | 0.21 ± 0.03c | 3.08 ± 0.14c | 0.55 ± 0.04c | 4.50 ± 0.13c | -3.58 ± 0.14c | 8.13 ± 0.22c | 4.55 ± 0.24c | |
岷江冷杉 Abies fargesii var. faxoniana | 1.95 ± 0.11d | 3.42 ± 0.13d | -2.07 ± 0.13a | -2.05 ± 0.09d | -1.29 ± 0.09d | 5.59 ± 0.11d | 3.29 ± 0.12d | 2.26 ± 0.10d | 5.55 ± 0.19d | |
土壤动物作用的P释放量 Amount of P released through soil fauna | 康定柳 Salix paraplesia | 0.37 ± 0.04a | 0.13 ± 0.01a | -0.09 ± 0.02a | -0.81 ± 0.06a | 0.45 ± 0.05a | -0.15 ± 0.03a | 0.43 ± 0.03a | -0.51 ± 0.02a | -0.08 ± 0.01a |
方枝柏 Sabina saltuaria | 0.23 ± 0.01b | -0.07 ± 0.01b | 0.46 ± 0.05b | -0.84 ± 0.05a | -0.28 ± 0.03b | -0.71 ± 0.06b | 0.62 ± 0.03b | -1.83 ± 0.16b | -1.21 ± 0.07b | |
红桦 Betula albosinensis | -0.11 ± 0.01c | 0.06 ± 0.01c | -0.01 ± 0.01c | -0.10 ± 0.01b | 0.56 ± 0.07c | -0.59 ± 0.04c | -0.06 ± 0.01c | -0.13 ± 0.01c | -0.19 ± 0.01c | |
岷江冷杉 Abies fargesii var. faxoniana | 0.81 ± 0.07d | 0.43 ± 0.05d | 0.07 ± 0.01d | -1.58 ± 0.09c | 0.94 ± 0.10d | -1.49 ± 0.14d | 1.31 ± 0.11d | -2.12 ± 0.08d | -0.81 ± 0.03d |
平均温度 Average temperature | 正积温 Positive accumulated temperature | 负积温 Negative accumulated temperature | 个体密度 Density of individuals | 类群数量Number of groups | |
---|---|---|---|---|---|
土壤动物作用的N释放量PN Amount of N released through soil fauna | 0.129 | 0.251** | -0.260** | 0.083 | 0.033 |
土壤动物作用的P释放量PP Amount of P released through soil fauna | -0.273** | -0.259** | 0.126 | 0.355** | 0.300** |
Table 5 Correlation analysis among PN, PP and average temperature, positive accumulated temperature, negative accumulated temperature, and density of individuals and number of groups of soil fauna in subalpine and alpine forests of western Sichuan (n = 120)
平均温度 Average temperature | 正积温 Positive accumulated temperature | 负积温 Negative accumulated temperature | 个体密度 Density of individuals | 类群数量Number of groups | |
---|---|---|---|---|---|
土壤动物作用的N释放量PN Amount of N released through soil fauna | 0.129 | 0.251** | -0.260** | 0.083 | 0.033 |
土壤动物作用的P释放量PP Amount of P released through soil fauna | -0.273** | -0.259** | 0.126 | 0.355** | 0.300** |
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[1] | HE Jie,YANG Wan-Qin,NI Xiang-Yin,LI Han,XU Li-Ya,WU Fu-Zhong. Effects of snow patch on the dynamics of potassium and sodium during litter decomposition in winter in a subalpine forest of western Sichuan [J]. Chin J Plant Ecol, 2014, 38(6): 550-561. |
[2] | XIA Lei, WU Fu-Zhong, YANG Wan-Qin. Contribution of soil fauna to mass loss of Abies faxoniana leaf litter during the freeze-thaw season [J]. Chin J Plant Ecol, 2011, 35(11): 1127-1135. |
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