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| Effects of different environment factors on NO fluxes from intact and disturbed soils from the typical sugarcane field in Southern China |
| Received:June 17, 2016 |
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| KeyWord:nitric oxide;intact soil;disturbed soil;temperature;water content;sterilization |
| Author Name | Affiliation | E-mail | | HU Bao-ye | College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China | | | WANG Xian-feng | College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China | | | CHEN Lu | College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China | | | YIN Liang | College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China | | | LEI Cong | College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China | | | TONG Yue-hua | College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China | | | YI Zhi-gang | College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China | zhigangyi73@163.com |
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| Abstract: |
| Nitric oxide(NO) plays significant roles on the formation of near-surface ozone, and soil ecosystem is one of the important source of the near-surface NO, which is influenced by many factors, such as water content and temperature.This study investigated the effect of different environment factors(soil water content, temperature etc.) on soil NO fluxes in laboratory. Soils were collected from typical sugarcane field in Southern China.The results showed that NO flux of intact soil column was significantly higher than that of disturbed soil column. Soil NO flux under anaerobic condition was significantly higher than that under aerobic condition. NO flux of disturbed soil reduced dramatically after sterilization. The highest NO flux appeared at the soil maximum water holding capacity of 20% for the non -sterilization intact soil column under anaerobic condition, with the value of 24.1 ng N·m-2·s-1, and the highest flux appeared at 25℃. The results demonstrated that the emission of NO from soil was mainly from microbial process under anaerobic condition. Low water content and the optimal temperature would benefit for the soil NO production. |
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