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DOI | 10.1016/j.jes.2018.08.011 |
Characterizing nitric oxide emissions from two typical alpine ecosystems | |
Lin, Fei1,2; Liu, Chunyan1; Hu, Xiaoxia1,2; Fu, Yongfeng1,2; Zheng, Xunhua1,2; Wang, Rui1; Zhang, Wei1; Cao, Guangmin3 | |
发表日期 | 2019 |
ISSN | 1001-0742 |
EISSN | 1878-7320 |
卷号 | 77页码:312-322 |
英文摘要 | A portion of alpine meadows has been and will continue to be cultivated due to the concurrent increasing demands for animal- and crop-oriented foods and global warming. However, it remains unclear how these long-term changes in land use will affect nitric oxide (NO) emission. At a field site with a calcareous soil on the Qinghai-Tibetan Plateau, the authors measured the year-round NO fluxes and related variables in a typically winter-grazed natural alpine meadow (NAM) and its adjacent forage oat field (FOF). The results showed that long-term plow tillage, fertilization and growing forage oats significantly yielded ca. 2.7 times more (p < 0.01) NO emissions from the FOF than the NAM (conservatively 208 vs. 56 g N/(ha.year) on average). The spring freeze-thaw period and non-growing season accounted for 17%-35% of the annual emissions, respectively. The Qio of surface soil temperature (T-s) was 8.9 in the NAM (vs. 3.8 in the FOF), indicating increases of 24%-93% in NO emissions per 1-3 degrees C increase. However, the warming-induced increases could be smaller than those due to land use change and management practices. The T-s and concentrations of ammonium, nitrate and water-extractable organic carbon jointly explained 69% of the variance in daily NO fluxes from both fields during the annual period (p < 0.001). This result indicates that temporally and/or spatially distributed NO fluxes from landscapes with calcareous soils across native alpine meadows and/or fields cultivated with forage oats can be predicted by simultaneous observations of these four soil variables. (C) 2018 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. |
WOS研究方向 | Environmental Sciences & Ecology |
来源期刊 | JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
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文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/94595 |
作者单位 | 1.Chinese Acad Sci, State Key Lab Atmospher Boundary Layer Phys & Atm, Inst Atmospher Phys, Beijing 100029, Peoples R China; 2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China; 3.Chinese Acad Sci, Northwest Inst Plateau Biol, Xining 810008, Qinghai, Peoples R China |
推荐引用方式 GB/T 7714 | Lin, Fei,Liu, Chunyan,Hu, Xiaoxia,et al. Characterizing nitric oxide emissions from two typical alpine ecosystems[J],2019,77:312-322. |
APA | Lin, Fei.,Liu, Chunyan.,Hu, Xiaoxia.,Fu, Yongfeng.,Zheng, Xunhua.,...&Cao, Guangmin.(2019).Characterizing nitric oxide emissions from two typical alpine ecosystems.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,77,312-322. |
MLA | Lin, Fei,et al."Characterizing nitric oxide emissions from two typical alpine ecosystems".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 77(2019):312-322. |
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