Zhao Jia-Yu, Zhang Mi, Xiao Wei, Wang Wei, Wu Hong-Yan, Zhang Zhen, Xiao Qi-Tao, Hu Cheng, Yu Zhou, Cao Zheng-da, Xu Jing-Zheng, Liu Shou-Dong, Li Xu-Hui
School of Physics and Optoelectronic Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China.
Yale-NUIST Center on Atmospheric Environment, Key Laboratory of Meteorological Disaster of Ministry of Education, Joint International Research Laboratory of Climate and Environment Change, Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science and Technology, Nanjing 210044, China.
Huan Jing Ke Xue. 2017 Jan 8;38(1):41-51. doi: 10.13227/j.hjkx.201605142.
As an important part of inland waters,small pond is a neglected source of greenhouse gas.The main objective of the study was to quantify greenhouse gas fluxes (CO and CH) from small pond in the Yangtze Delta using flux-gradient method.The results showed that:① zero-gradient test indicated that the flux measurement precision for water vapor,CO,and CH was 7.525 W·m,0.022 mg·(m·s),and 0.054 μg·(m·s),respectively.During the test period,84%,80%,and 94% of half-hourly flux data for HO,CO,and CH were higher than the zero-gradient measurement precision.② Based on the measurement,the small pond was the source of CO and CH for the atmosphere in summer,the mean emission flux of CO and CH was 0.038 mg·(m·s) and 0.889 μg·(m·s),respectively.The CH emission fluxes from the small pond were more higher than the median value of emission for global lakes.The results indicated that greenhouse gas emission from small pond was an important part for estimating inland water greenhouse gas emissions,especially for CH emission.These results can provide scientific reference for making emission inventory of regional greenhouse gas.
作为内陆水域的重要组成部分，小型池塘是一个被忽视的温室气体排放源。本研究的主要目的是利用通量梯度法对长江三角洲地区小型池塘的温室气体通量（CO和CH）进行量化。结果表明：①零梯度测试表明，水汽、CO和CH通量测量精度分别为7.525 W·m、0.022 mg·(m·s)和0.054 μg·(m·s)。在测试期间，HO、CO和CH的半小时通量数据分别有84%、80%和94%高于零梯度测量精度。②基于测量结果，夏季小型池塘是大气中CO和CH的排放源，CO和CH的平均排放通量分别为0.038 mg·(m·s)和0.889 μg·(m·s)。小型池塘的CH排放通量远高于全球湖泊排放的中值。结果表明，小型池塘的温室气体排放是估算内陆水域温室气体排放的重要组成部分，尤其是CH排放。这些结果可为区域温室气体排放清单的编制提供科学参考。
