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[1]LI Xin-yu,GENG Shao-bo,ZHAO Shu-qin,et al.CO2 Flux of an Agroforestry Ecosystem in Non-growing Seasons in Huaibei Plain[J].Research of Soil and Water Conservation,2011,18(05):132-138,143.

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CO₂ Flux of an Agroforestry Ecosystem in Non-growing Seasons in Huaibei Plain

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 18 Number of periods: 2011 05 Page number: 132-138,143 Column: Public date: 2011-10-20

Title:: CO₂ Flux of an Agroforestry Ecosystem in Non-growing Seasons in Huaibei Plain

Author(s):: LI Xin-yu¹, GENG Shao-bo², ZHAO Shu-qin³, TONG Zhi-bin³, WANG Jing⁴, ZHANG Jun-ying⁵; 1. Forestry Bureau of Xiping County of He’nan Province, Xiping, He’nan 463900, China;
2. Key Laboratory of Soil and Water Conservation Desertification Combating of Ministry of Education, College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China;
3. Department of Forestry, Hebei Province, Shijiazhuang 050081, China

Keywords:: agroforestry ecosystem in Huaibei Plain; CO₂ flux; soil respiration; effect of rainfall

CLC:: S718.43

DOI:: -

Abstract:: The research of the vorticity flux variation of the polar plantation in the non-growing season in Xiping, He’nan Province was carried out. The research method was to use the OPEC to monitor the CO₂ flux of the agroforestry ecosystem in non-growing season in Huaibei Plain, and calculate out the flux data by using the high frequency data in 10 Hz. The results showed that: (1) the ecosystem CO₂ flux changed obviously at the scale of day and reason, which daytime displays on the entire growth season was the carbon absorption in the date criterion, however, carbon sequestration was performed obviously in fall end and early spring at the reason scale; (2)by comparing the ecosystem CO₂ flux and soil respiration rate,respiration rate found in the soil ecosystem carbon flux is less important than its contribution to plant; (3)the correlation between the soil temperature in the 5 cm soil layer and soil respiration of days and daily interpersonal relationship was significant,though it is not very remarkable with the ecosystem CO₂ flux correlational dependence; (4)the correlation between the soil water content in the 5 cm soil and the soil respiration rate was significantly in one day, and it was not significant at the daily scale, and the correlation between the soil water content in the 5 cm soil and the ecosystem CO₂ flux was not significant either; (5)the ecosystem carbon sequestration showed an increasing trend after the rainfall and the complex precipitation process, just like sleet; but the carbon emission had the enhancement tendency after the snow and foggy.

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