Diurnal Change of Soil Carbon Flux of Binhai New District

8th International Conference on Future Environment and Energy

生态环境科学;能源学

Wang, T.F.^1 ; Mao, T.Y.^1 ; Ye, W.^1

Tianjin Research Institute for Water Transport Engineering, Ministry of Transport, Tianjin, China^1

关键词: Atmosphere temperature;    Environmental factors;    Exponential correlation;    Exponential equations;    Field observations;    Photosynthetic apparatus;    Soil carbon fluxes;    Soil respiration rates;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/150/1/012007/pdf
DOI  :  10.1088/1755-1315/150/1/012007

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In order to investigate the factors influencing diurnal change of soil carbon flux of Binhai New District. Field observation experiments were carried out by using LC pro-SD photosynthetic apparatus. The diurnal changes of soil carbon flux and its environmental factors such as atmosphere temperature and soil temperature were analysed. The results indicated that soil carbon flux appeared single diurnal pattern. The diurnal average of soil carbon flux ranked from 0.2761 to 2.3367μmo1/m2/s. Soil carbon flux varied significantly among different land use regimes(P10value was based on the exponential correlations. Its value of Tian Keyuan, ECO-city, Dagu-Outlet and Yongding-River was 8.331, 6.049, 2.651 and 1.391, respectively. There were quadratic correlations between soil carbon flux and soil temperature (10cm). And soil temperature could account for more than 32.27% of the soil carbon flux changes (P2=0.3227-0.7465).