草原风蚀坑发育对土壤生态化学计量的影响
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李雨薇, 王博, 包玉海, 韩彦隆, 闫茂林, 王伟峰
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Effects of the development of grassland blowouts on soil ecological stoichiometry
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Yuwei Li, Bo Wang, Yuhai Bao, Yanlong Han, Maolin Yan, Weifeng Wang
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表2 草原风蚀坑发育过程中土壤碳氮磷储量变化
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Table 2 Changes of soil C, N, P storage during the development of blowouts in steppe
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指标 | 样地类型 | 土层 | 总量 |
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0~20 cm | 20~40 cm | 40~60 cm | 60~80 cm |
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碳储量 /(t·hm-2) | 天然草原 | 71.0±7.2a | 62.7±4.8a | 59.1±3.9a | 54.3±3.6a | 247.1±15.9a | 风蚀裸地 | 63.9±10.2b | 62.2±8.9a | 50.4±14.7ab | 47.7±8.3ab | 224.1±34.2ab | 活跃风蚀坑 | 30.6±16.3c | 30.1±15.5c | 28.3±10.8c | 24.3±9.6c | 113.4±50.8c | 消亡风蚀坑 | 55.9±13.9b | 54.8±7.6b | 48.9±11.4b | 44.2±12.5b | 203.8±13.0b | 氮储量 /(t·hm-2) | 天然草原 | 6.1±3.0b | 7.2±2.3b | 5.4±1.3a | 5.3±2.0a | 24.1±4.3a | 风蚀裸地 | 7.1±3.6a | 7.3±1.7b | 5.5±1.3a | 4.9±0.9a | 24.7±7.5a | 活跃风蚀坑 | 5.0±2.0c | 8.1±4.6a | 5.3±3.4a | 4.2±3.0b | 22.7±12.0b | 消亡风蚀坑 | 6.4±1.2b | 6.9±3.3b | 5.2±0.7a | 4.2±1.6b | 22.6±1.2b | 磷储量 /(t·hm-2) | 天然草原 | 1.90±0.67b | 1.39±0.39d | 1.70±0.58a | 1.24±0.30a | 6.24±1.95b | 风蚀裸地 | 1.74±0.14b | 1.55±0.41c | 1.38±0.22b | 1.22±0.21a | 5.90±0.93c | 活跃风蚀坑 | 1.31±0.15c | 1.75±0.80b | 1.43±0.23b | 1.15±0.14a | 5.65±1.29d | 消亡风蚀坑 | 2.18±0.48a | 1.86±0.77a | 1.43±0.21b | 1.07±0.19a | 6.54±1.21a |
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