海拔对马衔山生态系统土壤-微生物碳氮磷计量特征的影响
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李玉倩, 王旭洋, 林宏东, 牟晓明, 刘伟媛, 连杰, 李玉强
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Effects of altitude gradient on soil microbial carbon, nitrogen and phosphorus stoichiometric characteristics in Maxian Mountain ecosystem
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Yuqian Li, Xuyang Wang, Hongdong Lin, Xiaoming Mou, Weiyuan Liu, Jie Lian, Yuqiang Li
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表2 不同海拔植被条件下土壤基本理化性质
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Table 2 Basic physical and chemical properties of soil at different elevations
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因子 | 高山草原(AG) | 亚高山灌丛(SS) | 高山灌丛(AS) | 高山草甸(AM) |
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温度/℃ | 0~20 cm | 29.37±6.30a | 22.88±1.09b | 20.07±2.44b | 18.30±4.90b | 20~40 cm | 29.25±6.30a | 22.67±1.01b | 19.78±2.51b | 17.75±4.53b | 地下生物量/g | 0~20 cm | 18.15±7.62a | 12.46±5.88a | 20.86±6.89a | 44.13±56.48a | 20~40 cm | 4.33±2.24a | 4.55±4.53a | 7.02±7.24a | 7.83±16.89a | 容重/(g·cm-3) | 0~20 cm | 2.19±0.33a | 1.49±0.57bc | 1.16±0.16c | 1.83±0.36ab | 20~40 cm | 2.71±0.46a | 1.98±0.66b | 1.61±0.31b | 2.03±0.19b | 含水率/% | 0~20 cm | 9.37±4.48b | 36.12±24.91a | 48.76±13.92a | 51.54±6.74a | 20~40 cm | 6.86±1.11c | 26.54±16.10b | 40.39±9.38ab | 43.17±14.71a | pH | 0~20 cm | 8.12±0.06a | 7.11±0.21b | 6.78±0.11c | 6.08±0.15d | 20~40 cm | 8.30±0.05a | 7.34±0.29b | 6.88±0.09c | 6.29±0.07d | 电导率/(S·m-1) | 0~20 cm | 115.42±5.22a | 83.42±17.53b | 93.80±14.27b | 114.92±17.88a | 20~40 cm | 126.98±12.65a | 73.82±13.58b | 72.18±14.25b | 63.87±12.18b | 砂粒(w/w)/% | 0~20 cm | 14.78±4.08ab | 8.10±1.92b | 8.62±3.81b | 18.22±10.50a | 20~40 cm | 14.32±4.86a | 6.53±2.28b | 8.73±4.88b | 8.20±4.92b | 黏粉粒(w/w)/% | 0~20 cm | 85.22±4.08ab | 91.90±1.92a | 91.38±3.81a | 81.78±10.50b | 20~40 cm | 85.68±4.86b | 93.47±2.28a | 91.27±4.88ab | 91.80±4.92a |
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