| CARBON DYNAMICS OF WETLAND IN THE SANJIANG PLAIN |
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| 引用本文： | SONG Chang-chun1,2,WANG Yi-yong 1,WANG Yue-si 2,YAN Bai-xing1 WANG De-xuan1,ZHAO Zhi-chun1,LOU Yan-jing1(1. Northeast Institute of Geography and Agricultural Ecology,Chinese Academy of Sciences,Changchun 130012,P. R. China: 2. Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029,P. R. China). CARBON DYNAMICS OF WETLAND IN THE SANJIANG PLAIN[J]. 中国地理科学(英文版), 2003, 13(3): 228-231. DOI: 10.1007/s11769-003-0021-8 |
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| 作者姓名： | SONG Chang-chun1 2 WANG Yi-yong 1 WANG Yue-si 2 YAN Bai-xing1 WANG De-xuan1 ZHAO Zhi-chun1 LOU Yan-jing1(1. Northeast Institute of Geography and Agricultural Ecology Chinese Academy of Sciences Changchun 130012 P. R. China: 2. Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 P. R. China) |
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| 作者单位： | 1. Northeast Institute of Geography and Agricultural Ecology，Chinese Academy of Sciences，Changchun 130012，P. R. China: 2. Institute of Atmospheric Physics，Chinese Academy of Sciences，Beijing 100029，P. R. China |
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| 基金项目： | Foundationitem:UndertheauspicesoftheKnowledgeInnovationProjectofChineseAcademyofSciences(No.KZCX1-SW-01，KZCX13-SW-262) |
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| 摘 要： | 1INTRODUCTIONWetlandsplayanimportant roleintheprocessofcar-bonstorage.Thetotalcarbonstoredindifferentkindsofwetlandsisabout15%-35%ofthetotalcarboninthegloballandsoils(POSTetal.,1982;GORHAM,1991).Inaddition,wetlandsaresignificantnaturalsources fortheatmospheric CH4 (MOORE,1994).It isestimatedthatabout110×1012gCH4 originates fromanaerobicdecompositioninthenaturalwetlands,CH4 emission fromthenaturalwetlandsis15%-30%oftheglobalCH4 emission andtheCH4 emission from thepeat land at hi…
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| 关 键 词： | 沼泽地 甲烷 二氧化碳 CO2 CH4 三江平原 土壤温度 中国 碳动态 |
| 收稿时间： | 2002-12-23 |
Carbon dynamics of wetland in the Sanjiang plain |
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| Song Chang-chun,Wang Yi-yong,Wang Yue-si,Yan Bai-xing,Wang De-xuan,Zhao Zhi-chun,Lou Yan-jing. Carbon dynamics of wetland in the Sanjiang plain[J]. Chinese Geographical Science, 2003, 13(3): 228-231. DOI: 10.1007/s11769-003-0021-8 |
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| Authors: | Song Chang-chun Wang Yi-yong Wang Yue-si Yan Bai-xing Wang De-xuan Zhao Zhi-chun Lou Yan-jing |
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| Affiliation: | (1) Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Sciences, 130012 Changchun, P. R. China;(2) Institute of Atmospheric Physics, Chinese Academy of Sciences, 100029 Beijing, P. R. China |
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| Abstract: | Methane (CH4) and carbon dioxide (CO2) emission was measured from mires in the Sanjiang Plain, Northeast China, by using a static chamber technique during free snow-covered periods. The seasonal mean emission of CH4 was 12.4mg/(m2·h) and the emission range of CO2 was 8.7–16.6g/(m2·d) (gross CO2 flux) during plant growth period. CO2 emission rate in the day was stronger than that at night, and the daily peak appears at 19:00. The mire plants in the Sanjiang Plain begin to sprout at the end of April. The aboveground biomass of the mire plants increased from zero to the peak from July to September and showed single peak form. The aboveground biomass of Carex lasiocarpa (464.8g/m2) was lower than that of Deyeuxia platyphylla (530.8g/m2), but the underground biomass was higher than that of Deyeuxia platyphylla. Gross CO2 flux showed the significance positive correlation relationship with plant biomass. Gross CO2 flux and CH4 emission were also correlated with soil temperature (0–5cm) and water temperature. However, the highest CH4 emission rate lagged behind the highest soil temperature in the root area during plant growth period. The data also indicated that wet and warm conditions during the early spring led to greater value of CH4 emission flux. Inundation is the necessary condition for the existence of methane bacteria, but there is no significant positive correlation between the inundation depth and CH4 emission rate in this region. Within the same growing season and under the same inundation condition, the variations of CH4 emission rate could be markedly different. Foundation item: Under the auspices of the Knowledge Innovation Project of Chinese Academy of Sciences (No. KZCX1-SW-01, KZCX13-SW-262) Biography: SONG Chang-chun (1968–), male, a native of Zhumadian City of Henan Province, professor, Ph. D., specialized in greenhouse gases research. E-mail: songcc@mail.neigae.ac.cn |
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| Keywords: | mire methane emission gross carbon dioxide static chamber technique soil temperature |
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