Knowledge Management System of Northwest Institute of Plateau Biology, CAS
Effect of Grazing Intensity on Soil and Plant delta N-15 of an Alpine Meadow | |
Du, Yangong ; Guo, Xiaowei ; Zhou, Geng ; Cao, Guangmin ; Li, Yikang | |
2017 | |
发表期刊 | POLISH JOURNAL OF ENVIRONMENTAL STUDIES |
摘要 | The mechanisms underlying the retention of inorganic N were still not well understood in an alpine meadow on the Tibetan Plateau as well as in other high-altitude meadow sites greatly grazed and disturbed. We conducted field soil and dominant species foliar nitrogen natural abundance of stable isotope ratios (delta N-15) under four grazing intensities. It was demonstrated that soil delta N-15 decreased significantly from 5.83 +/- 0.20% to 2.17 +/- 0.48% at 0-10 cm with the elevation of grazing intensity. Grazing reduced the degree of ecosystem N openness. The delta N-15 value of surface soil was mainly affected by soil total nitrogen. Furthermore, the degree of nitrogen limitation increased with grazing elevation for sedge family and Gramineae family plants. |
文献类型 | 期刊论文 |
条目标识符 | http://210.75.249.4/handle/363003/48582 |
专题 | 中国科学院西北高原生物研究所 |
推荐引用方式 GB/T 7714 | Du, Yangong,Guo, Xiaowei,Zhou, Geng,et al. Effect of Grazing Intensity on Soil and Plant delta N-15 of an Alpine Meadow[J]. POLISH JOURNAL OF ENVIRONMENTAL STUDIES,2017. |
APA | Du, Yangong,Guo, Xiaowei,Zhou, Geng,Cao, Guangmin,&Li, Yikang.(2017).Effect of Grazing Intensity on Soil and Plant delta N-15 of an Alpine Meadow.POLISH JOURNAL OF ENVIRONMENTAL STUDIES. |
MLA | Du, Yangong,et al."Effect of Grazing Intensity on Soil and Plant delta N-15 of an Alpine Meadow".POLISH JOURNAL OF ENVIRONMENTAL STUDIES (2017). |
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