SOIL CO_2 EMISSIONS ON THE GLACIER SHRINKING AREA IN HAILUOGOU GLACIER

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From the middle of 19 century, mountain glacier recession occurs widely and Hailuogou glacier does so on a great scale. There is a primary vegetation succession series on the shrinking glacial area. The enhancement of greenhouse gases result in the climate warming. Glacier recession is a response to the global climate warming. Determination on soil respiration plays an important role in the research on the global carbon cycling, which is one key problem for the global climate change studies. The observed values differ in different sites or with different measuring methods or by distinct observers, which add up one indefinite factor to the study on the global carbon balance. There exist different base courses at one same climatic district on the glacier shrinking area in Hailuogou, Gongga Mountain.Comparing the characteristic of different soil CO 2 emissions through the synchronous observation by the analyze ways of on|the|spot infrared CO 2(CI|301) and chromatographic mainframe(HP5890A),and with the achievements of the study on the glacial recession area and vegetation succession, we established a series of soil CO 2 emission flux that can be a reference to emend the determination of soil CO 2 emission on different regions of the globe and that can be a useful parameter for modeling the global carbon cycling . Vegetation succession in the more than 2000m long glacial recession area is serially divided into 6 phases :①exposed shrinking area phase,②herbs phase,③shrubs phase,④deciduous and broad|leaved mixed forest phase⑤coniferous and broad|leaved mixed forest phase,⑥coniferous forest phase. Based on the two|year’s measurement, the series of the mean intensity of soil respiration was arranged: 0, 1 960, 1 136, 2 080, 3 688 and 4 706μmol CO-2/(m+2·s); the series of the flux of soil CO-2 emission was arranged: 0, 74 510, 43 185, 79 071, 140 200 and 178 890kg CO-2/(hm+2·d), respectively.Among the effect factors of soil respiration, temperature is the main one. All kinds of temperature influence soil respiration during the 6 succession phases.. The 2nd phase is influenced by atmospheric temperature, the 3rd and 4th phase by near|surface temperature, the 5th and 6th phases by 5~10cm soil temperature. There is a primary vegetation succession series on the shrinking glacial area. The enhancement of greenhouse gases result in the climate warming. Glacier recession is a response on the global climate warming. Determination on soil respiration plays an important role in the research on the global carbon cycling, which is one key problem for the global climate change studies. The observed values ​​differ in different sites or with different measuring methods or by distinct observers, which add up one indefinite factor to the study on the global carbon balance. There exist different base courses at one same climatic district on the glacier shrinking area in Hailuogou, Gongga Mountain. Comparing the characteristic of different soil CO 2 emissions through the synchronous observation by the analysis ways of on | the | spot infrared CO 2 (CI | 301) and chromatographic mainframe (HP5890A), and with the achievements of the study on the glacial recession area and vegetation succession, we established a series of soil CO2 emission flux that can be a reference to emend the determination of soil CO2 emission on different regions of the globe and that can be a useful parameter for modeling the global carbon cycling. Vegetation succession in the more than 2000m long glacial recession area is serially divided into 6 phases: ①exposed shrinking area phase, ②herbs phase, ③shrubs phase, ④deciduous and broad leaved mixed forest phase ⑤coniferous and broad leaved mixed forest phase, ⑥coniferous forest phase. Based on the two | year’s measurement, the series of the mean intensity of soil respiration was arranged: 0, 1 960, 1 136, 2 080, 3 688 and 4 706 μmol CO - 2 / (m + 2 · s); the series of the flux of soil CO - 2 emission was arranged: 0, 74 510, 43 185, 79 071, 140 200 and 178 890kg CO - 2 / (hm + 2 · d), respectively.Among the effect factors of soil respiration, temperature is the main one. All kinds of temperature influence soil respiration during the 6 succession phases. The 2nd phase is influenced by atmospheric temperature, the 3rd and 4th phases by near | surface temperature, the 5th and 6th phases by 5 ~ 10cm soil temperature.
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