中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 重庆绿色智能技术研究院
  3. 中国科学院重庆绿色智能技术研究院
  4. 水质生物转化研究中心
Soil-air greenhouse gas fluxes influenced by farming practices in reservoir drawdown area: A case at the Three Gorges Reservoir in China

文献类型：期刊论文

作者Li, Zhe1,2; Zhang, Zengyu4; Lin, Chuxue2; Chen, Yongbo2; Wen, Anbang3; Fang, Fang4
刊名JOURNAL OF ENVIRONMENTAL MANAGEMENT
出版日期2016-10-01
卷号181页码:64-73
关键词Three Gorges Reservoir Drawdown area Farming practices Greenhouse gas emissions Global warming potential
ISSN号0301-4797
DOI10.1016/j.jenvman.2016.05.080
通讯作者Li, Z (reprint author), Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, CAS Key Lab Reservoir Environm, Chongqing 400714, Peoples R China.
英文摘要The Three Gorges Reservoir (TGR) in China has large water level variations, creating about 393 km(2) of drawdown area seasonally. Farming practices in drawdown area during the low water level period is common in the TGR. Field experiments on soil-air greenhouse gas (GHG) emissions in fallow grassland, peanut field and corn field in reservoir drawdown area at Lijiaba Bay of the Pengxi River, a tributary of the Yangtze River in the TGR were carried out from March through September 2011. Experimental fields in drawdown area had the same land use history. They were adjacent to each other horizontally at a narrow range of elevation i.e. 167-169 m, which assured that they had the same duration of reservoir inundation. Unflooded grassland with the same land-use history was selected as control for study. Results showed that mean value of soil CO2 emissions in drawdown area was 10.38 +/- 0.97 mmol m(-2) h(-1) The corresponding CH4 fluxes and N2O fluxes were -8.61 +/- 2.15 mu mol m(-2) h(-1) and 3.42 +/- 0.80 mu mol m(-2) h(-1). Significant differences and monthly variations among land uses in treatments of drawdown area and unflooded grassland were evident. These were impacted by the change in soil physiochemical properties which were alerted by reservoir operation and farming. Particularly, N-fertilization in corn field stimulated N2O emissions from March to May. In terms of global warming potentials (GWP), corn field in drawdown area had the maximum GWP mainly due to N-fertilization. Gross GWP in peanut field in drawdown area was about 7% lower than that in fallow grassland. Compared to unflooded grassland, reservoir operation created positive net effect on GHG emissions and GWPs in drawdown area. However, selection of crop species, e.g. peanut, and best practices in farming, e.g. prohibiting N-fertilization, could potentially mitigate GWPs in drawdown area. In the net GHG emissions evaluation in the TGR, farming practices in the drawdown area shall be taken into consideration. (C) 2016 Elsevier Ltd. All rights reserved.
资助项目National Natural Science Foundation[41430750] ; Chongqing Science and Technology Commission[cstc2015jcyjBX0006] ; Chinese Academy of Sciences[KZCX2-XB3-14]
WOS研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000383291700008
出版者ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
源URL[http://119.78.100.138/handle/2HOD01W0/2769]  
专题水质生物转化研究中心
通讯作者Li, Zhe
作者单位1.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, CAS Key Lab Reservoir Environm, Chongqing 400714, Peoples R China
2.China Three Gorges Corp, Beijing 100038, Peoples R China
3.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
4.Chongqing Univ, Coll Urban Construct & Environm Engn, Chongqing 400045, Peoples R China
推荐引用方式
GB/T 7714		 Li, Zhe,Zhang, Zengyu,Lin, Chuxue,et al. Soil-air greenhouse gas fluxes influenced by farming practices in reservoir drawdown area: A case at the Three Gorges Reservoir in China[J]. JOURNAL OF ENVIRONMENTAL MANAGEMENT,2016,181:64-73.
APA Li, Zhe,Zhang, Zengyu,Lin, Chuxue,Chen, Yongbo,Wen, Anbang,&Fang, Fang.(2016).Soil-air greenhouse gas fluxes influenced by farming practices in reservoir drawdown area: A case at the Three Gorges Reservoir in China.JOURNAL OF ENVIRONMENTAL MANAGEMENT,181,64-73.
MLA Li, Zhe,et al."Soil-air greenhouse gas fluxes influenced by farming practices in reservoir drawdown area: A case at the Three Gorges Reservoir in China".JOURNAL OF ENVIRONMENTAL MANAGEMENT 181(2016):64-73.

入库方式： OAI收割

来源：重庆绿色智能技术研究院

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。