Chin J Plant Ecol ›› 2017, Vol. 41 ›› Issue (9): 964-971.DOI: 10.17521/cjpe.2017.0015
Special Issue: 青藏高原植物生态学:植物-土壤-微生物; 碳水能量通量
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Kai-Jun YANG, Wan-Qin YANG, Yu TAN, Ruo-Yang HE, Li-Yan ZHUANG, Zhi-Jie LI, Bo TAN, Zhen-Feng XU*()
Received:
2016-05-24
Revised:
2017-08-26
Online:
2017-09-10
Published:
2017-10-23
Contact:
Zhen-Feng XU
Kai-Jun YANG, Wan-Qin YANG, Yu TAN, Ruo-Yang HE, Li-Yan ZHUANG, Zhi-Jie LI, Bo TAN, Zhen-Feng XU. Short-term responses of winter soil respiration to snow removal in a Picea asperata forest of western Sichuan[J]. Chin J Plant Ecol, 2017, 41(9): 964-971.
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土壤深度 Soil depth (cm) | 处理 Treatment | 日平均温度(℃) Daily mean temperature (℃) | 最低温度(℃) Minimum temperature (℃) | 土壤冻结天数 Duration of frozen soil (d) | 冻融次数 Freeze-thaw cycle |
---|---|---|---|---|---|
0 | 雪被去除 Snow removal | -2.15 | -9.1 | 103 | 63 |
对照 Control | -0.71 | -2.2 | 122 | 24 | |
5 | 雪被去除 Snow removal | -0.61 | -1.6 | 83 | 25 |
对照 Control | -0.28 | -0.5 | 99 | 13 |
Table 1 Timing of freezing and freeze-thaw cycles under different treatments
土壤深度 Soil depth (cm) | 处理 Treatment | 日平均温度(℃) Daily mean temperature (℃) | 最低温度(℃) Minimum temperature (℃) | 土壤冻结天数 Duration of frozen soil (d) | 冻融次数 Freeze-thaw cycle |
---|---|---|---|---|---|
0 | 雪被去除 Snow removal | -2.15 | -9.1 | 103 | 63 |
对照 Control | -0.71 | -2.2 | 122 | 24 | |
5 | 雪被去除 Snow removal | -0.61 | -1.6 | 83 | 25 |
对照 Control | -0.28 | -0.5 | 99 | 13 |
Fig. 3 Effects of snow removal on winter soil respiration rate (mean ± SE). “*” indicates significant difference of winter soil respiration between the snow removal and control at the same period (α = 0.05).
处理 Treatment | a | b | Q10 | R2 | p |
---|---|---|---|---|---|
雪被去除 Snow removal | 0.39 | 0.16 | 4.95 ± 0.69 | 0.54 | <0.05 |
对照 Control | 0.48 | 0.24 | 11.02 ± 0.72 | 0.65 | <0.01 |
Table 2 Statistics of soil respiration rate in relation to soil temperature (mean ± SE)
处理 Treatment | a | b | Q10 | R2 | p |
---|---|---|---|---|---|
雪被去除 Snow removal | 0.39 | 0.16 | 4.95 ± 0.69 | 0.54 | <0.05 |
对照 Control | 0.48 | 0.24 | 11.02 ± 0.72 | 0.65 | <0.01 |
位置 Location | 纬度 Latitude | 经度 Longitude | 冬季CO2通量 Winter CO2 efflux (g·m-2·a-1) | 平均土壤呼吸速率 Mean soil respiration rate (μmol·m-2·s-1) | 参考文献 References |
---|---|---|---|---|---|
加拿大 Canada | 55.37°-56.24° N | 97.24°-99.05° W | 40-55 | 0.1-0.8 | Winston et al., 1997 |
中国黑龙江 Heilongjiang, China | 50.93° N | 121.50° E | / | 0.7 | Du et al., 2013 |
中国黑龙江 Heilongjiang, China | 45.40° N | 127.66° E | 51.7 | 0.21 | Wang et al., 2013 |
奥地利 Austria | 47.56° N | 11.63° E | 62 | 0.24-0.64 | Schindlbacher et al., 2007 |
美国爱达荷州 Idaho, America | 46.08° N | 116.08° W | 132 | 0.8 | Mcdowell et al., 2000 |
中国河北 Hebei, China | 42.17°-42.83° N | 117.20°-117.50° E | 31.64 | 0.21 | Wang et al., 2010b |
美国科罗拉多州 Colorado, America | 39.07° N | 105.87° W | 71 | 0.34 | Hubbard et al., 2005 |
日本 Japan | 36.13° N | 137.42° E | 84 | 0.48 | Mo et al., 2005 |
中国四川 Sichuan, China | 31.68° N | 103.88° E | / | 0.51 | Xiong et al., 2010 |
中国四川 Sichuan, China | 31.25° N | 102.88° E | 88.44 | 0.52 | 本研究 This study |
Table 3 Values of winter CO2 efflux from seasonally snow-covered forests in literature
位置 Location | 纬度 Latitude | 经度 Longitude | 冬季CO2通量 Winter CO2 efflux (g·m-2·a-1) | 平均土壤呼吸速率 Mean soil respiration rate (μmol·m-2·s-1) | 参考文献 References |
---|---|---|---|---|---|
加拿大 Canada | 55.37°-56.24° N | 97.24°-99.05° W | 40-55 | 0.1-0.8 | Winston et al., 1997 |
中国黑龙江 Heilongjiang, China | 50.93° N | 121.50° E | / | 0.7 | Du et al., 2013 |
中国黑龙江 Heilongjiang, China | 45.40° N | 127.66° E | 51.7 | 0.21 | Wang et al., 2013 |
奥地利 Austria | 47.56° N | 11.63° E | 62 | 0.24-0.64 | Schindlbacher et al., 2007 |
美国爱达荷州 Idaho, America | 46.08° N | 116.08° W | 132 | 0.8 | Mcdowell et al., 2000 |
中国河北 Hebei, China | 42.17°-42.83° N | 117.20°-117.50° E | 31.64 | 0.21 | Wang et al., 2010b |
美国科罗拉多州 Colorado, America | 39.07° N | 105.87° W | 71 | 0.34 | Hubbard et al., 2005 |
日本 Japan | 36.13° N | 137.42° E | 84 | 0.48 | Mo et al., 2005 |
中国四川 Sichuan, China | 31.68° N | 103.88° E | / | 0.51 | Xiong et al., 2010 |
中国四川 Sichuan, China | 31.25° N | 102.88° E | 88.44 | 0.52 | 本研究 This study |
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