Distribution patterns of vegetation biomass and nutrients bio-cycle in alpine tundra ecosystem on Changbai Mountains, Northeast China |
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基金项目: | This research was supported by National Natural Science Foundation of China (No: 40473054) and Agricultural Technological Production Translation of Science and Technology of Ministry (No: 05EFN216600446). |
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摘 要: | A study was conducted to test the correlation between biomass and elevation and the differences in concentration and storks of nutrients among five vegetation types (Felsenmeer alpine tundra vegetation-FA, Lithic alpine tundra vegetation-LA, Typical alpine tundra vegetation-TA, Meadow alpine tundra vegetation-MA, and Swamp alpine tundra vegetation-SA) on alpine tundra of Changbai Mountains, Jilin Province, China in growing seasons of 2003, 2004 and 2005. The biomass of 43 mono-species and soil nutrients in alpine tundra ecosystem were also investigated. Dominant species from Ericaceae (such as Rhododendron chrysanthum and Vaccinium jliginosum var. alpinum) were taken to analyze organ biomass distribution. Result showed that the biomass and elevation had a significant correlation (Biomass-237.3 in(Elevation) +494.36; R^2=0.8092; P〈0.05). No significant differences were found in phosphorus and sulphur concentrations of roots, stems and leaves among the five vegetation types. There were significant differences in nitrogen and phosphorus stocks of roots, stems and leaves and in sulphur stock of stems and leaves among TA, MA, and SA vegetation types (p〈0.05). The nutrient stock of five vegetations was averagely 72.46 kg.hm^-2, of which N, P, S were 48.55, 10.33 and 13.61 kg·hm^-2, respectively. Soil N and S concentrations in meadow alpine tundra soil type was significantly higher than those in other four soil types (Cold desert alpine tundra soil, Lithic alpine tundra soil, Peat alpine tundra soil, and Gray alpine tundra soil). Phosphorous concentration in SA type was higher (p〈0.05) than in other types. Soil nutrient stock (0-20cm) was averagely 39.59 t.hm^-2, of which N, P, S were 23.74, 5.86, 9.99 t·hm^-2, respectively.
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关 键 词: | 营养生物循环 树干 植被型 土壤类型 植被生物量 |
文章编号: | 1007/s11676-007-0055-3 |
收稿时间: | 2007-03-28 |
修稿时间: | 2007-07-09 |
Distribution patterns of vegetation biomass and nutrients bio-cycle in alpine tundra ecosystem on Changbai Mountains, Northeast China |
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Authors: | Jing Wei Ping Jiang De-yong Yu Gang Wu Hai-wei Fu |
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Institution: | (1) State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, P. R. China;(2) Institute of Life Sciences, Qingdao University of Science & Technology, Qingdao, 266042, P. R. China;(3) Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, P. R. China |
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Abstract: | A study was conducted to test the correlation between biomass and elevation and the differences in concentration and storks
of nutrients among five vegetation types (Felsenmeer alpine tundra vegetation-FA, Lithic alpine tundra vegetation-LA, Typical
alpine tundra vegetation-TA, Meadow alpine tundra vegetation-MA, and Swamp alpine tundra vegetation-SA) on alpine tundra of
Changbai Mountains, Jilin Province, China in growing seasons of 2003, 2004 and 2005. The biomass of 43 mono-species and soil
nutrients in alpine tundra ecosystem were also investigated. Dominant species from Ericaceae (such as Rhododendron chrysanthum and Vaccinium jliginosum var. alpinum) were taken to analyze organ biomass distribution. Result showed that the biomass and elevation had a significant correlation
(Biomass=−237.3 ln(Elevation) +494.36; R2=0.8092; P<0.05). No significant differences were found in phosphorus and sulphur concentrations of roots, stems and leaves among the
five vegetation types. There were significant differences in nitrogen and phosphorus stocks of roots, stems and leaves and
in sulphur stock of stems and leaves among TA, MA, and SA vegetation types (p<0.05). The nutrient stock of five vegetations was averagely 72.46 kg·hm−2, of which N, P, S were 48.55, 10.33 and 13.61 kg·hm−2, respectively. Soil N and S concentrations in meadow alpine tundra soil type was significantly higher than those in other
four soil types (Cold desert alpine tundra soil, Lithic alpine tundra soil, Peat alpine tundra soil, and Gray alpine tundra
soil). Phosphorous concentration in SA type was higher (p<0.05) than in other types. Soil nutrient stock (0–20cm) was averagely 39.59 t·hm−2, of which N, P, S were 23.74, 5.86, 9.99 t·hm−2, respectively.
Foundation project: This research was supported by National Natural Science Foundation of China (No: 40473054) and Agricultural
Technological Production Translation of Science and Technology of Ministry (No: 05EFN216600446).
Biography: WEI Jing (1973∼), female, Ph.D, at State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental
Sciences, Chinese Academy of Sciences, major in environment management and restoration ecology. |
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Keywords: | Nutrients bio-cycle Stock Vegetation type Soil type Vegetation biomass |
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