REGULARITY AND ESTIMATION OF METHANE EMISSION FROM MARSHLAND IN THE SANJIANG PLAIN

崔保山; 马学慧; 张明祥

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REGULARITY AND ESTIMATION OF METHANE EMISSION FROM MARSHLAND IN THE SANJIANG PLAIN

崔保山, 马学慧, 张明祥

文章导航 > Chinese Geographical Science > 1998 > 8(1): 74-84

崔保山, 马学慧, 张明祥. REGULARITY AND ESTIMATION OF METHANE EMISSION FROM MARSHLAND IN THE SANJIANG PLAIN[J]. 中国地理科学, 1998, 8(1): 74-84.

引用本文:

崔保山, 马学慧, 张明祥. REGULARITY AND ESTIMATION OF METHANE EMISSION FROM MARSHLAND IN THE SANJIANG PLAIN[J]. 中国地理科学, 1998, 8(1): 74-84.

Cui Baoshan, Ma Xuehui, Zhang Mingxiang. REGULARITY AND ESTIMATION OF METHANE EMISSION FROM MARSHLAND IN THE SANJIANG PLAIN[J]. Chinese Geographical Science, 1998, 8(1): 74-84.

Citation:

Cui Baoshan, Ma Xuehui, Zhang Mingxiang. REGULARITY AND ESTIMATION OF METHANE EMISSION FROM MARSHLAND IN THE SANJIANG PLAIN[J]. Chinese Geographical Science, 1998, 8(1): 74-84.

REGULARITY AND ESTIMATION OF METHANE EMISSION FROM MARSHLAND IN THE SANJIANG PLAIN

1.
Changchun Institute of Geography, the Chinese Academy of Sciences, Changchun 130021, P. R. China;
2.
Minis try of Forestry, the Peoples Republic of China, Beijing 100714, P. R. China

REGULARITY AND ESTIMATION OF METHANE EMISSION FROM MARSHLAND IN THE SANJIANG PLAIN

1.
Changchun Institute of Geography, the Chinese Academy of Sciences, Changchun 130021, P. R. China;
2.
Minis try of Forestry, the Peoples Republic of China, Beijing 100714, P. R. China

摘要: The regularity of CH₄ emission from marshland in the Sanjiang Plain was studied by sampling in the open field and analyzing under laboratory condition, the annual emission amount is also estimated. By Grey Relatively Analysis we know that the soil temperature in the 10 cm depth of grass root layer is close related with CH₄ emission. CH₄ emission has different kinds of diurnal emission modes:before dawn maximum mode, night maximum mode and irregular fluctuation mode. The seasonal variation trend of CH₄ emission rates is going up steadily from May to August and dropping down from September,the maximum lies behind the maximum of temperature. CH₄ emission rates of different marshland types are different, the CH₄ emission rate of Glyceriaspiculosa-Carex marshland is always higher than that of Carex lasiocarpa marshland. The paper also studies the difference of CH₄ emission rates in different managing modes and analyzes the emission rates between China and U.S.A. The result shows: the average value of CH₄ emission rate is 17.26mg/(m²·h),the annual amount of CH₄ emission is about 0.75Tg.
- Sanjiang Plain /
- marshland /
- methane emission /
- diurnal variation /
- seasonal variation
Abstract: The regularity of CH₄ emission from marshland in the Sanjiang Plain was studied by sampling in the open field and analyzing under laboratory condition, the annual emission amount is also estimated. By Grey Relatively Analysis we know that the soil temperature in the 10 cm depth of grass root layer is close related with CH₄ emission. CH₄ emission has different kinds of diurnal emission modes:before dawn maximum mode, night maximum mode and irregular fluctuation mode. The seasonal variation trend of CH₄ emission rates is going up steadily from May to August and dropping down from September,the maximum lies behind the maximum of temperature. CH₄ emission rates of different marshland types are different, the CH₄ emission rate of Glyceriaspiculosa-Carex marshland is always higher than that of Carex lasiocarpa marshland. The paper also studies the difference of CH₄ emission rates in different managing modes and analyzes the emission rates between China and U.S.A. The result shows: the average value of CH₄ emission rate is 17.26mg/(m²·h),the annual amount of CH₄ emission is about 0.75Tg.
- Sanjiang Plain /
- marshland /
- methane emission /
- diurnal variation /
- seasonal variation

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REGULARITY AND ESTIMATION OF METHANE EMISSION FROM MARSHLAND IN THE SANJIANG PLAIN

1. Changchun Institute of Geography, the Chinese Academy of Sciences, Changchun 130021, P. R. China;

2. Minis try of Forestry, the Peoples Republic of China, Beijing 100714, P. R. China

刊出日期: 1998-03-20

关键词:

marshland /

摘要: The regularity of CH₄ emission from marshland in the Sanjiang Plain was studied by sampling in the open field and analyzing under laboratory condition, the annual emission amount is also estimated. By Grey Relatively Analysis we know that the soil temperature in the 10 cm depth of grass root layer is close related with CH₄ emission. CH₄ emission has different kinds of diurnal emission modes:before dawn maximum mode, night maximum mode and irregular fluctuation mode. The seasonal variation trend of CH₄ emission rates is going up steadily from May to August and dropping down from September,the maximum lies behind the maximum of temperature. CH₄ emission rates of different marshland types are different, the CH₄ emission rate of Glyceriaspiculosa-Carex marshland is always higher than that of Carex lasiocarpa marshland. The paper also studies the difference of CH₄ emission rates in different managing modes and analyzes the emission rates between China and U.S.A. The result shows: the average value of CH₄ emission rate is 17.26mg/(m²·h),the annual amount of CH₄ emission is about 0.75Tg.

English Abstract

崔保山, 马学慧, 张明祥. REGULARITY AND ESTIMATION OF METHANE EMISSION FROM MARSHLAND IN THE SANJIANG PLAIN[J]. 中国地理科学, 1998, 8(1): 74-84.

引用本文:

崔保山, 马学慧, 张明祥. REGULARITY AND ESTIMATION OF METHANE EMISSION FROM MARSHLAND IN THE SANJIANG PLAIN[J]. 中国地理科学, 1998, 8(1): 74-84.

Cui Baoshan, Ma Xuehui, Zhang Mingxiang. REGULARITY AND ESTIMATION OF METHANE EMISSION FROM MARSHLAND IN THE SANJIANG PLAIN[J]. Chinese Geographical Science, 1998, 8(1): 74-84.

Citation:

Cui Baoshan, Ma Xuehui, Zhang Mingxiang. REGULARITY AND ESTIMATION OF METHANE EMISSION FROM MARSHLAND IN THE SANJIANG PLAIN[J]. Chinese Geographical Science, 1998, 8(1): 74-84.

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REGULARITY AND ESTIMATION OF METHANE EMISSION FROM MARSHLAND IN THE SANJIANG PLAIN

REGULARITY AND ESTIMATION OF METHANE EMISSION FROM MARSHLAND IN THE SANJIANG PLAIN

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REGULARITY AND ESTIMATION OF METHANE EMISSION FROM MARSHLAND IN THE SANJIANG PLAIN

1. Changchun Institute of Geography, the Chinese Academy of Sciences, Changchun 130021, P. R. China; 2. Minis try of Forestry, the Peoples Republic of China, Beijing 100714, P. R. China

English Abstract

REGULARITY AND ESTIMATION OF METHANE EMISSION FROM MARSHLAND IN THE SANJIANG PLAIN

1. Changchun Institute of Geography, the Chinese Academy of Sciences, Changchun 130021, P. R. China; 2. Minis try of Forestry, the Peoples Republic of China, Beijing 100714, P. R. China

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目录

1. Changchun Institute of Geography, the Chinese Academy of Sciences, Changchun 130021, P. R. China;

2. Minis try of Forestry, the Peoples Republic of China, Beijing 100714, P. R. China

1. Changchun Institute of Geography, the Chinese Academy of Sciences, Changchun 130021, P. R. China;

2. Minis try of Forestry, the Peoples Republic of China, Beijing 100714, P. R. China