| 草毡寒冻雏形土有机质补给、分解及大气CO2通量交换 |
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| 引用本文： | 李英年,王勤学,杜明远,赵亮,徐世晓,唐艳鸿,于贵瑞,赵新全,古松.草毡寒冻雏形土有机质补给、分解及大气CO2通量交换[J].草地学报,2006,14(2):165-169. |
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| 作者姓名： | 李英年 王勤学 杜明远 赵亮 徐世晓 唐艳鸿 于贵瑞 赵新全 古松 |
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| 作者单位： | 1. 中国科学院西北高原生物研究所, 青海, 西宁, 810001;2. 日本国立环境研究所, 日本, 筑波, 3050053;3. 日本农业环境技术研究所, 3058604;4. 中国科学院地理科学与资源研究所, 北京, 100101 |
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| 基金项目： | 中国科学院科研项目
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国家研究发展基金
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中-日合作项目
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中国-日本合作项目 |
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| 摘 要： | 调查草毡寒冻雏形土生物量及土壤有机质,利用涡度相关技术观测该区域作用层与大气CO2通量。结果表明:地下90%生物量集中于0~10cm的表土层,年总净初级生产量约935.0g/m2;土壤有机质含量在6.401~7.060%之间;净CO2通量呈明显的日变化和季节变 化规律;5月中 旬到9月底为CO2的净吸收(780gCO2/m2),其中以7月最高,净吸收量明显高于非生长季的,10月到翌年5月初CO2的净排放量(383gCO2/m2);全年固定碳高达397g/m2。
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| 关 键 词： | 草毡寒冻雏形土 草毡表层 有机质 生物量 净初级生产力 CO2通量 |
| 文章编号： | 1007-0435（2006）02-0165-05 |
| 收稿时间： | 2005-08-11 |
| 修稿时间： | 2006-02-17 |
A Study on Replenishment and Decomposition of Organic Matter in and Mat-Cryic Cambisols CO2 Flux Between Vegetation and Atmosphere |
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| LI Ying-nian,WANG Qin-xue,DU Ming-yuan,ZHAO Liang,XU Shi-xiao,TANG Yan-hong,ZHAO Xin-quan,YU Guiri.A Study on Replenishment and Decomposition of Organic Matter in and Mat-Cryic Cambisols CO2 Flux Between Vegetation and Atmosphere[J].Acta Agrestia Sinica,2006,14(2):165-169. |
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| Authors: | LI Ying-nian WANG Qin-xue DU Ming-yuan ZHAO Liang XU Shi-xiao TANG Yan-hong ZHAO Xin-quan YU Guiri |
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| Institution: | 1. Northwest Institute of Plateau Biology, CAS, Xining 830001, China;2. National Institute for Environmental Studies, 3050053, Japan;3. National Institute for Agro-Environmental Science, 3058604, Japan;4. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100001 China |
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| Abstract: | In Mat-Cryic Cambisols region,biomass of growing plants and soil organic matter(SOM) were invesgated,and eddy covariance of CO_2 flux between vagetation and atmosphere was observed.The results suggested that 1) more than 90% of the underground biomass was concentrated in the soil layer of 0~10 cm,annual net primary production was about 935.0 g/m~2;the content of SOM was ranged from 6.401% to 7.060%.2) There was significant daily and seasonal variation in CO_2 flux of alpine meadow ecosystem.As for seasonal dynamic,it is net CO_2 influx(780 g CO_2/m~2) from middle May to end of September,and monthly peak is July;net CO_2 influx volume exceed net CO_2 efflux(383 g CO_2/m~2) from first October to May.Annual net CO_2 flux is 397 g/m~2. |
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| Keywords: | Mat-Cryic Cambisols Mattic epipedon Organic matter Biomass Net primary production CO_2 flux |
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