Feng Xiang-Rong, Deng Ou-Ping, Deng Liang-Ji, Wu Ming, Yao Kun, Yang Ze-Peng
College of Resources, Sichuan Agricultural University, Chengdu 610030, China.
Soil and Fertilizer Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu 610066, China.
Huan Jing Ke Xue. 2017 Dec 8;38(12):5344-5351. doi: 10.13227/j.hjkx.201705018.
In order to study the flux characteristics of CH, CO and NO in different ditches and their influencing factors, three types of ditches (an agricultural ditch, agricultural-living compound ditch, and living ditch) were monitored once a month from March 2014 to February 2015 using static floating chambers in the Chengdu Plain. The results showed that:① Affected by human activities, CO, CH, and NO fluxes were high in ditches and ranged from -2.26-1504.40 mg·(m·h), 0.69-40.00 mg·(m·h), and -2.27-70.35 μg·(m·h),respectively. All are higher in summer compared to autumn and spring, and are lowest in winter. ② The flux of CO in agricultural-living compound ditches was significantly higher than that in agricultural ditches and living ditches (<0.05), and the fluxes of CH and NO in living ditches were significantly higher than those in agricultural ditches and agricultural-living compound ditches (<0.05). ③ Water temperature and rainfall were the main environmental factors affecting CO, CH, and NO fluxes, and DO (dissolved oxygen) and TN (total nitrogen) were the main environmental factors affecting CO and NO fluxes. NH-N (ammonium nitrogen) and DO were the main water quality parameters affecting the CH flux.
为研究不同沟渠中CH、CO和NO的通量特征及其影响因素，于2014年3月至2015年2月期间，每月一次采用静态浮箱对成都平原的三种类型沟渠（农业沟渠、农业生活复合沟渠和生活沟渠）进行监测。结果表明：①受人类活动影响，沟渠中CO、CH和NO通量较高，范围分别为-2.26 - 1504.40 mg·(m·h)、0.69 - 40.00 mg·(m·h)和-2.27 - 70.35 μg·(m·h)。与秋季和春季相比，夏季的通量均更高，冬季最低。②农业生活复合沟渠中的CO通量显著高于农业沟渠和生活沟渠（<0.05），生活沟渠中的CH和NO通量显著高于农业沟渠和农业生活复合沟渠（<0.05）。③水温与降雨是影响CO、CH和NO通量的主要环境因素，溶解氧（DO）和总氮（TN）是影响CO和NO通量的主要环境因素。铵态氮（NH-N）和溶解氧是影响CH通量的主要水质参数。
