西南地区草地群落灌木植物盖度对生态系统碳库的影响
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薛晶月,王丽华,谢雨,高景,贺俊东,吴彦
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Effect of shrub coverage on grassland ecosystem carbon pool in southwestern China
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XUE Jing-Yue,WANG Li-Hua,XIE Yu,GAO Jing,HE Jun-Dong,WU Yan
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表3 西南地区不同灌木植物盖度草地生态系统碳库
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Table 3 Carbon pool in grassland ecosystem with different shrub coverage in southwestern China
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灌木植物
盖度
Shrub coverage | 植被碳库
Carbon pool of
vegetation (kg·m-2) | 土壤碳库
Soil carbon pool (kg·m-2) | 生态系统碳库
Carbon pool of
ecosystem (kg·m-2) | 0-50 cm土层碳库
Soil carbon pool of 0-50 cm layer
(kg·m-2) | 植被碳库占生态
系统碳库比例
Ratio of vegetation
and ecosystem (%) | 土壤碳库占生态
系统碳库比例
Ratio of soil and
ecosystem (%) | | I | 0.304 ± 0.036a | 7.215 ± 0.507a | 7.519 ± 0.505a | 6.870 ± 0.468a | 4.33 ± 0.79a | 95.67 ± 0.79a | | II | 1.407 ± 0.204b | 6.031 ± 0.736a | 7.438 ± 0.717a | 5.485 ± 0.722a | 19.70 ± 3.57b | 80.30 ± 3.57b | | III | 1.574 ± 0.675b | 9.735 ± 0.444b | 11.309 ± 1.011b | 7.166 ± 0.374b | 12.54 ± 4.36ab | 87.46 ± 4.36ab | | F | 11.459 | 1.610 | 5.734 | 1.287 | 9.053 | 9.053 | | p | <0.001 | 0.213 | 0.007 | 0.288 | 0.001 | 0.001 |
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